noise-reduction

Is there a commandline audio noise reduction tool except SoX?

I am looking for a command-line tool or DLL for reducing noise in audio files. I have tried SoX but the results are mediocre. Does anyone have another suggestion (freeware or commercial). ...

iPhone SDK: How to record voices with ambient noise supression?

Can anyone point me in the right direction on how I would minimize ambient noise while recording someone speaking using the iPhone SDK Core Audio? I'm guessing a band-pass filter that eliminates any frequencies above and below the human vocal range might work. I have no idea how I would implement band filters on audio in the SDK though. ...

Noise reduction and compression in streaming audio

Hello, hope you can help. I am recording audio from a microphone and streaming it live across a network. The quality of the samples is 11025hz, 8 bit, mono. Although there is a small delay (1 second), it works great. What I need help with is I am trying to now implement noise reduction and compression, to make the audio quieter and use...

Disable noise cancellation iPhone 4 microphone

Hello, I would like to know if it's possible to disable the noise reduction microphone via code. My app plays background music that gets trim off because of this new mic. So i would like to have the background noise mic disabled while my app is open and running. Thank you ...