| Home |
| Search |
| Today's Posts |
|
#1
Posted to rec.audio.tech
|
|||
|
|||
Azimuth adjustment on a tape deck
Assuming:
The tape moves along the X pos axis The guides pull the tape to contact the heads in the Z pos axis The Y pos axis is the mounting screw connecting the head to the block _____ Which plane is azimuth? It is quite clear that errors in the XY Plane(Yaw) or YZ plane will cause a 1/4 track tape to play tracks it shouldn't .Especially the XY plane where height errors do not come into play What are the results of errors in the XZ(pitch) plane? I.E. the head is higher or lower on the left as on the right but there is no yaw (XY error) Any CNC programmers out there :-) G17 G18 G19 Abbedd |
|
#2
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote in message ... Assuming: The tape moves along the X pos axis The guides pull the tape to contact the heads in the Z pos axis The Y pos axis is the mounting screw connecting the head to the block _____ Which plane is azimuth? It is quite clear that errors in the XY Plane(Yaw) or YZ plane will cause a 1/4 track tape to play tracks it shouldn't .Especially the XY plane where height errors do not come into play What are the results of errors in the XZ(pitch) plane? I.E. the head is higher or lower on the left as on the right but there is no yaw (XY error) Any CNC programmers out there :-) G17 G18 G19 Abbedd Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. The gap needs to be vertical, i.e. at 90 degrees to the direction of tape motion. Normally there are two screws either side of a head. One (if adjustable) sets the height and the other, often fitted with a spring tensioner, sets the azimuth. The third screw, behind the head, sets the vertical angle of the gap in the direction at right angles to the plane of the tape. This adjustment is less critical, but should nevertheless be set as accurately as possible both to even the wear on the head surface, and to maintain the same tension across the width of the tape. To set azimuth you need a test-tape, or a music tape recorded on a known machine with azimuth correctly set. Adjust head azimuth using the test-tape azimuth band for a peak in output, or using music for maximum high frequencies. These days of free real-time spectrum analyser software, you can use a music tape and adjust for greatest high frequencies. It's probably easier than trying to find test tapes. S. -- http://audiopages.googlepages.com |
|
#3
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland"
wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd |
|
#4
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote in message ... On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd The same plane that the tape is in. S. -- http://audiopages.googlepages.com |
|
#5
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 14:23:48 -0000, "Serge Auckland"
wrote: "ansermetniac" wrote in message .. . On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd The same plane that the tape is in. S. Impossible Abbedd |
|
#6
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote in message ... On Fri, 26 Dec 2008 14:23:48 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message . .. On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd The same plane that the tape is in. S. Impossible Abbedd If you don't like the answer, then don't ask the f'ing question S. -- http://audiopages.googlepages.com |
|
#7
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 15:30:54 -0000, "Serge Auckland"
wrote: "ansermetniac" wrote in message .. . On Fri, 26 Dec 2008 14:23:48 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message ... On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd The same plane that the tape is in. S. Impossible Abbedd If you don't like the answer, then don't ask the f'ing question S. Your answer shows a lack of understanding of the question.In order for a head to be out of alingment it must violate the space of one or more of the three planes Don't undertstand the question. Don't give a f'ing answer Abbedd |
|
#8
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote in message ... On Fri, 26 Dec 2008 15:30:54 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message . .. On Fri, 26 Dec 2008 14:23:48 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message m... On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd The same plane that the tape is in. S. Impossible Abbedd If you don't like the answer, then don't ask the f'ing question S. Your answer shows a lack of understanding of the question.In order for a head to be out of alingment it must violate the space of one or more of the three planes Don't undertstand the question. Don't give a f'ing answer Since everyone here likely thinks that Mr. Auckland is giving the correct answer. Perhaps you are having a problem properly stating your question. The answer is immediately apparent to anyone who actually examines a tape deck, so perhaps we are confused why you are even asking it? |
|
#9
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 07:55:27 -0800, "Richard Crowley"
wrote: "ansermetniac" wrote in message .. . On Fri, 26 Dec 2008 15:30:54 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message ... On Fri, 26 Dec 2008 14:23:48 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message om... On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? Abbedd The same plane that the tape is in. S. Impossible Abbedd If you don't like the answer, then don't ask the f'ing question S. Your answer shows a lack of understanding of the question.In order for a head to be out of alingment it must violate the space of one or more of the three planes Don't undertstand the question. Don't give a f'ing answer Since everyone here likely thinks that Mr. Auckland is giving the correct answer. Perhaps you are having a problem properly stating your question. The answer is immediately apparent to anyone who actually examines a tape deck, so perhaps we are confused why you are even asking it? My question was self explanatory and explained well.It should be understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet Abbedd |
|
#10
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote ...
My question was self explanatory and explained well. It should be understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet The answer is that NO "plane" is violated by incorrect azimuth. Azimuth is Z-axis roll. If you extended an imaginary line perpendicular to the head gap, it should be parallel to the X-axis (the tape travel path as you have defined it). The imaginary perpendicular azimuth line would "violate" the X-axis if it were real. |
|
#11
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 08:24:11 -0800, "Richard Crowley"
wrote: "ansermetniac" wrote ... My question was self explanatory and explained well. It should be understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet The answer is that NO "plane" is violated by incorrect azimuth. Azimuth is Z-axis roll. If you extended an imaginary line perpendicular to the head gap, it should be parallel to the X-axis (the tape travel path as you have defined it). The imaginary perpendicular azimuth line would "violate" the X-axis if it were real. You a re saying that Azimuth violates one axis and not a plane(two axiis). I find that hard to believe How can the z axis roll around itself? If the x axis alone were violated, it would be the same as moving the head to the left or right. Abbedd |
|
#12
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote...
You a re saying that Azimuth violates one axis and not a plane (two axiis). I find that hard to believe Then you don't understand how roll, pitch, and yaw are defined. Perhaps you would find this instructive... http://en.wikipedia.org/wiki/Flight_dynamics Or else you have an unusual concept of what a "plane" is. Here is a good summary of the concept... http://en.wikipedia.org/wiki/Plane_(mathematics) How can the z axis roll around itself? Why can it not? Seems like a trivial concept. Look at the animated illustrations on the Wiki page on Flight Dynamics. If the x axis alone were violated, it would be the same as moving the head to the left or right. I don't see how moving the head left-right would "violate" any axis, either (except perhaps the Y-axis). Maybe you need to define what "violate an axis" means to you. The X-axis is only "violated" by the imaginary line perpendicular to the head gap as it rotates perpendicular to the Z-axis. Head *rotation* would cause that same imaginary line to "violate" the Y-axis. Perhaps someone else can take up this discourse. The length of this discussion has exceeded my interest in it. I have better things to do today. Bye. |
|
#13
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 09:12:51 -0800, "Richard Crowley"
wrote: "ansermetniac" wrote... You a re saying that Azimuth violates one axis and not a plane (two axiis). I find that hard to believe Then you don't understand how roll, pitch, and yaw are defined. Perhaps you would find this instructive... http://en.wikipedia.org/wiki/Flight_dynamics Or else you have an unusual concept of what a "plane" is. Here is a good summary of the concept... http://en.wikipedia.org/wiki/Plane_(mathematics) How can the z axis roll around itself? Why can it not? Seems like a trivial concept. Look at the animated illustrations on the Wiki page on Flight Dynamics. If the x axis alone were violated, it would be the same as moving the head to the left or right. I don't see how moving the head left-right would "violate" any axis, either (except perhaps the Y-axis). Maybe you need to define what "violate an axis" means to you. The X-axis is only "violated" by the imaginary line perpendicular to the head gap as it rotates perpendicular to the Z-axis. Head *rotation* would cause that same imaginary line to "violate" the Y-axis. Perhaps someone else can take up this discourse. The length of this discussion has exceeded my interest in it. I have better things to do today. Bye. Knowing a fact and understanding a fact are two differnt things. This subject is way over your head A tape head cannot be misadjusted in ONE axis Perhaps someone else can take up this discourse. The length of this discussion has exceeded my interest in it. I have better things to do today. Bye. Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere Yaw- violation of the y axis by the x xais pitch- violation of the z axis by the x axis Abbedd |
|
#14
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote...
Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere LOL! :-)) |
|
#15
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
My question was self explanatory and explained well.It should be
understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet Azimuth error is a matter of *rotational* mis-alignment. The center of the head may be positioned correctly on all three axes. However, if the head is rotated slightly (in the same plane as the tape motion), then the head gap will not be vertical (and will thus be non-perpendicular to the direction of tape motion). If axis X is the direction of tape motion, axis Y is across the width of the tape, and axis Z is "through the tape", then an azimuth error is the result of a rotation in the XY plane. This will result in the head gap "cutting across" the patterns of magnetic flux recorded in the domains in the tape, and will result in partial cancellation of the higher-frequency components of the signal. Net result: the sound is "dull". -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
|
#16
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
|
|
#17
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
ansermetniac wrote:
On Fri, 26 Dec 2008 11:07:08 -0800, (Dave Platt) wrote: ......snip.. Net result: the sound is "dull". That is what I thought SO azimuth error would increase crosstalk in 1/4 track tapes nd that would be a sign that the head is out of azimuth alignment Abbedd I don't see how you reach that conclusion from the "Net Result: " posted above. Maybe you should take some time and draw the various misalignment situations and think about the effects of each. You may want to think about how many degrees of freedom there are in the tape record/play-back scenario. [Sorry. I kind of hate when my students try to have me do their thinking for them, and try to guide them to ways to think about whatever it may be. ] Later... Ron Capik -- |
|
#18
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 21:02:09 GMT, Ron Capik
wrote: I don't see how you reach that conclusion from the "Net Result: " posted above. And that is my problem? Man.the pomposity factor hee is thick today Am I the only one who undertands planes? And I am not your student. Abbedd |
|
#19
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
ansermetniac wrote:
On Fri, 26 Dec 2008 21:02:09 GMT, Ron Capik wrote: I don't see how you reach that conclusion from the "Net Result: " posted above. And that is my problem? Well, it sure as heck isn't my problem. Man.the pomposity factor hee is thick today Guess you haven't spent much time here... Am I the only one who undertands planes? [No response.] And I am not your student. Fine, then pay no attention to me. Abbedd [Probably not] Later... Ron Capik -- |
|
#20
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 23:32:12 GMT, Ron Capik
wrote: ansermetniac wrote: On Fri, 26 Dec 2008 21:02:09 GMT, Ron Capik wrote: I don't see how you reach that conclusion from the "Net Result: " posted above. And that is my problem? Well, it sure as heck isn't my problem. Man.the pomposity factor hee is thick today Guess you haven't spent much time here... Am I the only one who undertands planes? [No response.] And I am not your student. Fine, then pay no attention to me. Abbedd [Probably not] Later... Ron Capik Mr.Capik. Just curious--what have you contributed to the World that makes you think you can be so pompous? Abbedd |
|
#21
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
SO azimuth error would increase crosstalk in 1/4 track tapes nd that
would be a sign that the head is out of azimuth alignment In theory, I suppose it might... but I wouldn't think so, in practice. You'd need really extreme azimuth misalignment to rotate the outermost track's head gap far enough into the tape path to bring its inner end past the inter-track guard area on the tape and into the next track. At a rough guess I'd expect you'd have to have the head rotated by 15 or 20 degrees in order for this to happen. I'm not at all sure that a head *can* be misaligned that far, even deliberately. Loss of high-frequency response during playback is the usual sign of azimuth error. Another is a relative phase error between the left and right channels... this might be audible. -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
|
#22
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
In article ,
"Richard Crowley" wrote: "ansermetniac" wrote... Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere LOL! :-)) This thread is awesome! Abbedd's postings embody every dumb asshole service technician I've ever met. I can see the azimuth adjustment spring launching across the room followed by a confident explanation that customer damage, thus voiding all warranty, has just been proven. Sears will totally hire him. -- Google is a pro-spamming service. I will not see your reply if you use Google. |
|
#23
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
ansermetniac wrote in message ... On Fri, 26 Dec 2008 23:32:12 GMT, Ron Capik wrote: ansermetniac wrote: On Fri, 26 Dec 2008 21:02:09 GMT, Ron Capik wrote: I don't see how you reach that conclusion from the "Net Result: " posted above. And that is my problem? Well, it sure as heck isn't my problem. Man.the pomposity factor hee is thick today Guess you haven't spent much time here... Am I the only one who undertands planes? [No response.] And I am not your student. Fine, then pay no attention to me. Abbedd [Probably not] Later... Ron Capik Mr.Capik. Just curious--what have you contributed to the World that makes you think you can be so pompous? Abbedd Let me give this a shot - The Y axis adjusts head height. All tracks and all frequencies are affected equally. When the plbk head is not lined up with the tracks on the tape, the output drops in direct proportion. The X axis does not have an effect on alignment, but it can affect tape wrap, which is just another way of saying that you can end up with poor tape to head contact. Some heads can be rotated in the X axis where as others shape the face of the head so that the tape will naturally wrap around the gap. The Z axis does not affect alignment but again, it's a matter of tape to head contact. If the head is backed off too far from the tape, or the tape wrap around the gap is incorrect, high frequencies fall off more than low. When you have a wad of dirt on the head, the tape does not make good contact with the gap which acts exactly like having the head backed away from the tape in the z axis. Azimuth is a different thing together. I guess you could visualize the point where x, y and z come together. X is parallel to the tape. If the X and Y axis rotate together about the intersection so that x is not parallel to the tape, and y is not perpendicular, then you have an azimuth misalignment. Azimuth affects high frequencies. If the azimuth is way out, obviuosly tracks can overlap. How far depends on the tape format. But for typical tape formats I'd think it would be very visible that the head is tilted off axis. |
|
#24
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"Kevin McMurtrie" wrote
"Richard Crowley" wrote: "ansermetniac" wrote... Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere LOL! :-)) This thread is awesome! Abbedd's postings embody every dumb asshole service technician I've ever met. I can see the azimuth adjustment spring launching across the room followed by a confident explanation that customer damage, thus voiding all warranty, has just been proven. Sears will totally hire him. He is rather like the famous troll "Radium" (and other aliases). First, he sets up a faulty strawman argument: that azimuth adjustment somehow "violates" (whatever that means?) a plane. Then he complains when nobody can explain it. I still cant figure out what his point is. And perhaps the problem is that he doesn't actually HAVE a point. All the head adjustments seem obvious upon inspection to most anyone who can peek under the head cover without resorting to theoretical "planes" and "violations". |
|
#25
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On 2008-12-26, Richard Crowley wrote:
"ansermetniac" wrote in message ... On Fri, 26 Dec 2008 15:30:54 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message ... On Fri, 26 Dec 2008 14:23:48 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message om... On Fri, 26 Dec 2008 10:49:41 -0000, "Serge Auckland" wrote: Tape azimuth is the rotation of the head gap relative to the direction of motion of the tape, in the same plane as the tape motion. If the head is out of adjustment it is off in one of the three planes.Which plane is azimuth? The same plane that the tape is in. Impossible If you don't like the answer, then don't ask the f'ing question Your answer shows a lack of understanding of the question.In order for a head to be out of alingment it must violate the space of one or more of the three planes Don't undertstand the question. Don't give a f'ing answer Since everyone here likely thinks that Mr. Auckland is giving the correct answer. Perhaps you are having a problem properly stating your question. The answer is immediately apparent to anyone who actually examines a tape deck, so perhaps we are confused why you are even asking it? As you say, Serge is perfectly correct. It seems the OP just does not understand enough geometry to convert the practically-oriented answer into his rather academic (homework-style?) formulation. For the OP (assuming I remember the problem formulation correctly): When the tape head is correctly adjusted on a tape machine the head gap lies along the Y axis. Alternatively speaking correct adjustment is achieved when the head gap is normal to the XZ plane. Azimuth alignment error in the tape deck context is nominally the angle of rotation of the head gap around the Z axis, relative to the Y axis (i.e. a rotation in the XY plane - the same plane as the tape is in, as Serge said). For completeness there are two other alignment errors: rotation of the head gap round the X axis (i.e. in the YZ plane); and translation of the head gap in the Y direction. -- John Phillips |
|
#26
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 22:34:32 -0700, "bg" wrote:
ansermetniac wrote in message ... On Fri, 26 Dec 2008 23:32:12 GMT, Ron Capik wrote: ansermetniac wrote: On Fri, 26 Dec 2008 21:02:09 GMT, Ron Capik wrote: I don't see how you reach that conclusion from the "Net Result: " posted above. And that is my problem? Well, it sure as heck isn't my problem. Man.the pomposity factor hee is thick today Guess you haven't spent much time here... Am I the only one who undertands planes? [No response.] And I am not your student. Fine, then pay no attention to me. Abbedd [Probably not] Later... Ron Capik Mr.Capik. Just curious--what have you contributed to the World that makes you think you can be so pompous? Abbedd Let me give this a shot - The Y axis adjusts head height. All tracks and all frequencies are affected equally. When the plbk head is not lined up with the tracks on the tape, the output drops in direct proportion. The X axis does not have an effect on alignment, but it can affect tape wrap, which is just another way of saying that you can end up with poor tape to head contact. Some heads can be rotated in the X axis where as others shape the face of the head so that the tape will naturally wrap around the gap. The Z axis does not affect alignment but again, it's a matter of tape to head contact. If the head is backed off too far from the tape, or the tape wrap around the gap is incorrect, high frequencies fall off more than low. When you have a wad of dirt on the head, the tape does not make good contact with the gap which acts exactly like having the head backed away from the tape in the z axis. Azimuth is a different thing together. I guess you could visualize the point where x, y and z come together. X is parallel to the tape. If the X and Y axis rotate together about the intersection so that x is not parallel to the tape, and y is not perpendicular, then you have an azimuth misalignment. Azimuth affects high frequencies. If the azimuth is way out, obviuosly tracks can overlap. How far depends on the tape format. But for typical tape formats I'd think it would be very visible that the head is tilted off axis. Finally an intelligent comment Abbedd |
|
#27
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 23:39:25 -0800, "Richard Crowley"
wrote: First, he sets up a faulty strawman argument: that azimuth adjustment somehow "violates" (whatever that means?) a plane. Then he complains when nobody can explain it. Read a book, for God S]sakes Abbedd |
|
#28
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On 27 Dec 2008 10:05:32 GMT, John Phillips
wrote: It seems the OP just does not understand enough geometry to convert the practically-oriented answer into his rather academic (homework-style?) formulation. Gee, I design CNC machines because I don't understand Geometry What a bunch of pompous fools in this ng I guess the US patent office gsve me some patents because I am an academic and can't make it in the real World Abbedd |
|
#29
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Fri, 26 Dec 2008 21:28:39 -0800, Kevin McMurtrie
wrote: In article , "Richard Crowley" wrote: "ansermetniac" wrote... Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere LOL! :-)) This thread is awesome! Abbedd's postings embody every dumb asshole service technician I've ever met. I can see the azimuth adjustment spring launching across the room followed by a confident explanation that customer damage, thus voiding all warranty, has just been proven. Sears will totally hire him. Sorry, 30 years as Chief Engineer at the most inovative company in the Music business made it impsooible for my to take Sears' offer Abbedd |
|
#31
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Sat, 27 Dec 2008 16:47:35 -0000, "Serge Auckland"
wrote: "ansermetniac" wrote in message .. . On Fri, 26 Dec 2008 11:07:08 -0800, (Dave Platt) wrote: My question was self explanatory and explained well.It should be understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet Azimuth error is a matter of *rotational* mis-alignment. The center of the head may be positioned correctly on all three axes. However, if the head is rotated slightly (in the same plane as the tape motion), then the head gap will not be vertical (and will thus be non-perpendicular to the direction of tape motion). If axis X is the direction of tape motion, axis Y is across the width of the tape, and axis Z is "through the tape", then an azimuth error is the result of a rotation in the XY plane. This will result in the head gap "cutting across" the patterns of magnetic flux recorded in the domains in the tape, and will result in partial cancellation of the higher-frequency components of the signal. Net result: the sound is "dull". That is what I thought SO azimuth error would increase crosstalk in 1/4 track tapes nd that would be a sign that the head is out of azimuth alignment Abbedd No, not necessarily. Azimuth errors are TINY, and as there's a guard-band between tracks, the azimuth error would have to be HUGE before crosstalk started being noticed. If you're getting crosstalk, that's a sign that the head is out of vertical alignment, not rotational alignment. S. Why vertical? That just makes the tape farther from the heads Abbedd |
|
#32
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
In article ,
ansermetniac wrote: On Fri, 26 Dec 2008 21:28:39 -0800, Kevin McMurtrie wrote: In article , "Richard Crowley" wrote: "ansermetniac" wrote... Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere LOL! :-)) This thread is awesome! Abbedd's postings embody every dumb asshole service technician I've ever met. I can see the azimuth adjustment spring launching across the room followed by a confident explanation that customer damage, thus voiding all warranty, has just been proven. Sears will totally hire him. Sorry, 30 years as Chief Engineer at the most inovative company in the Music business made it impsooible for my to take Sears' offer Abbedd That's sad. If I worked as a "Chief Engineer" in the music business, even machining Dave Guardala Mouthpieces, I would have learned the sciences behind audio recording and reproduction long before 30 years of my career had come and gone. More people will hear saxophones recorded than live. It all ties together. -- Google is a pro-spamming service. I will not see your reply if you use Google. |
|
#33
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Sat, 27 Dec 2008 09:57:09 -0800, Kevin McMurtrie
wrote: In article , ansermetniac wrote: On Fri, 26 Dec 2008 21:28:39 -0800, Kevin McMurtrie wrote: In article , "Richard Crowley" wrote: "ansermetniac" wrote... Running away with your tail between your legs won't increase your understanding of the subject Pompousity gets you nowhere.Learnig gets you everywhere LOL! :-)) This thread is awesome! Abbedd's postings embody every dumb asshole service technician I've ever met. I can see the azimuth adjustment spring launching across the room followed by a confident explanation that customer damage, thus voiding all warranty, has just been proven. Sears will totally hire him. Sorry, 30 years as Chief Engineer at the most inovative company in the Music business made it impsooible for my to take Sears' offer Abbedd That's sad. If I worked as a "Chief Engineer" in the music business, even machining Dave Guardala Mouthpieces, I would have learned the sciences behind audio recording and reproduction long before 30 years of my career had come and gone. More people will hear saxophones recorded than live. It all ties together. It appears you are clueless as to what goes into designing a Musical instrument Abbedd |
|
#34
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Dec 27, 7:33 am, ansermetniac
I guess the US patent office gave me some patents because I am an academic and can't make it in the real World The fact that you got a patent is about the least impressive achievement I can think of. The USPTO has recently issued a patent for a layering of garnish, meat products and other food products all between layers of bread. In other words, they granted a patent for the sandwich (it has been recinded, thankfully). They have issued patents for anti-gravity devices that violate basic physics, for clear and obvious devices that are known to those skilled in the art, for non-existent items, and more. MANY academics are granted patents. The difference being is that they likely know something. |
|
#35
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"ansermetniac" wrote in message ... On Sat, 27 Dec 2008 16:47:35 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message . .. On Fri, 26 Dec 2008 11:07:08 -0800, (Dave Platt) wrote: My question was self explanatory and explained well.It should be understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet Azimuth error is a matter of *rotational* mis-alignment. The center of the head may be positioned correctly on all three axes. However, if the head is rotated slightly (in the same plane as the tape motion), then the head gap will not be vertical (and will thus be non-perpendicular to the direction of tape motion). If axis X is the direction of tape motion, axis Y is across the width of the tape, and axis Z is "through the tape", then an azimuth error is the result of a rotation in the XY plane. This will result in the head gap "cutting across" the patterns of magnetic flux recorded in the domains in the tape, and will result in partial cancellation of the higher-frequency components of the signal. Net result: the sound is "dull". That is what I thought SO azimuth error would increase crosstalk in 1/4 track tapes nd that would be a sign that the head is out of azimuth alignment Abbedd No, not necessarily. Azimuth errors are TINY, and as there's a guard-band between tracks, the azimuth error would have to be HUGE before crosstalk started being noticed. If you're getting crosstalk, that's a sign that the head is out of vertical alignment, not rotational alignment. S. Why vertical? That just makes the tape farther from the heads Abbedd I've lost the will to live........ S. -- http://audiopages.googlepages.com |
|
#36
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Sat, 27 Dec 2008 18:39:24 -0000, "Serge Auckland"
wrote: "ansermetniac" wrote in message .. . On Sat, 27 Dec 2008 16:47:35 -0000, "Serge Auckland" wrote: "ansermetniac" wrote in message ... On Fri, 26 Dec 2008 11:07:08 -0800, (Dave Platt) wrote: My question was self explanatory and explained well.It should be understood by all who know geometry. Which plane is violated when azimuth is incorrect? Simple question. No answer has been given yet Azimuth error is a matter of *rotational* mis-alignment. The center of the head may be positioned correctly on all three axes. However, if the head is rotated slightly (in the same plane as the tape motion), then the head gap will not be vertical (and will thus be non-perpendicular to the direction of tape motion). If axis X is the direction of tape motion, axis Y is across the width of the tape, and axis Z is "through the tape", then an azimuth error is the result of a rotation in the XY plane. This will result in the head gap "cutting across" the patterns of magnetic flux recorded in the domains in the tape, and will result in partial cancellation of the higher-frequency components of the signal. Net result: the sound is "dull". That is what I thought SO azimuth error would increase crosstalk in 1/4 track tapes nd that would be a sign that the head is out of azimuth alignment Abbedd No, not necessarily. Azimuth errors are TINY, and as there's a guard-band between tracks, the azimuth error would have to be HUGE before crosstalk started being noticed. If you're getting crosstalk, that's a sign that the head is out of vertical alignment, not rotational alignment. S. Why vertical? That just makes the tape farther from the heads Abbedd I've lost the will to live........ S. You said vertical. Not me Abbedd |
|
#37
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
|
|
#38
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
"Serge Auckland" wrote ...
"ansermetniac" wrote ... Why vertical? That just makes the tape farther from the heads Abbedd I've lost the will to live........ If we trace the headers it may reveal that this guy is posting from an alternative universe where orthogonal dimensions are unknown. Or at least labeled different than ours'. :-)) PS: I not only have a patent but I use my real name and you can look it up. |
|
#39
Posted to rec.audio.tech
|
|||
|
|||
|
Azimuth adjustment on a tape deck
On Sat, 27 Dec 2008 13:16:36 -0800, "Richard Crowley"
wrote: "Serge Auckland" wrote ... "ansermetniac" wrote ... Why vertical? That just makes the tape farther from the heads Abbedd I've lost the will to live........ If we trace the headers it may reveal that this guy is posting from an alternative universe where orthogonal dimensions are unknown. Or at least labeled different than ours'. :-)) PS: I not only have a patent but I use my real name and you can look it up. And you are a pompous ass who builds his sorry life up by trying to bring others down to your level of incompetence. Try someone else. Planes are planes in any field or world. There are only three axiis.It shouldn't take you too much time to memorize them. But you are too stupid to ever understand them Abbedd |
| Reply |
| Thread Tools | |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Azimuth adjustment | High End Audio | |||
| Azimuth adjustment on Aiwa tape deck- problem | Tech | |||
| WTB cassette deck with playback azimuth adjustment(CR7,DR1,dragon,etc.) | Pro Audio | |||
| Azimuth adjustment on cassette deck | Tech | |||
| Azimuth adjustment | Audio Opinions | |||
Linear Mode
