I have a .mp3 file. How can I seperate the human voice from the rest of the sound in C?

c audio extract voice
Lazer picture Lazer · Oct 15, 2009 · Viewed 7.4k times · Source

Is it even possible in C [I know it is possible in general -GOM player does it]? just let me get started... What do you say?

How exactly do you identify human voice distinguished from other sounds?

Answer

sharptooth picture sharptooth · Oct 15, 2009

Filters in mp3 players usually rely on the fact that the voice source (the performer) in a stereo recording studio is positioned at the center. So they just compute the difference between the channels. If you give them a recording where the performer is not positioned like that they fail - the voice is not extracted.

The reliable way is employing a voice detector. This is a very complex problem that involves hardcore math and thorough tuning of the algorithms for your specific task. if you go this way you start with reading on voice coding (vocoders).

Related questions

ALSA: Ways to prevent underrun for speaker

I am playing a single channel audio in non-interleaved mode. I am getting underrun when I am writing audio data into speaker : ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred Here is how I write: printf("%d",snd_pcm_…

Read More
Encode audio to aac with libavcodec

I'm using libavcodec (latest git as of 3/3/10) to encode raw pcm to aac (libfaac support enabled). I do this by calling avcodec_encode_audio repeatedly with codec_context->frame_size samples each time. The first four calls return successfully, …

Read More
The meaning of period in ALSA

I'm using ALSA for and audio application on Linux, I found great docs explain how to use it : 1 and this one. although I have some issues to understand this part of the setup : /* Set number of periods. Periods used to …

Read More