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shotgun & array microphones for speech recognition
Has anyone here experimented with professional shotgun microphones for
speech recognition? I'm considering buying this microphone: Audio-Technica AT835B Short Shotgun Condenser Microphone (http://www.fullcompass.com/Products/pages/SKU--23740/) I believe I can achieve far better results with this mic in a noisy room. I actually plan to use this mic for my home jukebox system (and later in a car system.) The current mics I'm using do work pretty well though. In a car the crown pzm-10 and pzm-11 mic's work pretty well even while on the freeway with a moderate amount of road noise. With the crown mic's I can control my jukebox from 20 feet away with high accuracy in a quiet room. My headset microphone (parrot talkpro) works even better with lots of road noise and the stereo turned up. I'm also considering buying this microphone - Acoustic Magic (http://www.acousticmagic.com/products/) Does anyone know which mic might be better in a noisy environment, e.g. human speech, tv, ect. The user's mouth will be from 1-2 feet away from the microphone. Thanks, Jeff IntelligentJukebox (dot) com |
#2
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"Jeff" wrote ...
Has anyone here experimented with professional shotgun microphones for speech recognition? I'm considering buying this microphone: Audio-Technica AT835B Short Shotgun Condenser Microphone (http://www.fullcompass.com/Products/pages/SKU--23740/) How are you going to keep a shotgun mic aimed properly? The guys over on news:rec.arts.movies.production.sound have used and discussed most of the shotgun mics available on the planet. I have the AT835 and it is OK, but the pros don't like it. But for your purposes, since you don't care about sound quality or low-level noise, it may work OK. I believe I can achieve far better results with this mic in a noisy room. I actually plan to use this mic for my home jukebox system (and later in a car system.) The current mics I'm using do work pretty well though. In a car the crown pzm-10 and pzm-11 mic's work pretty well even while on the freeway with a moderate amount of road noise. With the crown mic's I can control my jukebox from 20 feet away with high accuracy in a quiet room. My headset microphone (parrot talkpro) works even better with lots of road noise and the stereo turned up. I'm also considering buying this microphone - Acoustic Magic (http://www.acousticmagic.com/products/) Does anyone know which mic might be better in a noisy environment, e.g. human speech, tv, ect. The user's mouth will be from 1-2 feet away from the microphone. I'm amazed that you can get speech recognition to work in that environment with ANY mic. PZMs would be my last choice if I were looking to separate the signal of interest from the ambient noise. The laws of physics/acoustics say that the closer you can get the mic to your mouth, the greater the signal-to-noise ratio and the better chance you have of speech recognition. The only reliable ones I've seen use headset-type mics. |
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