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Which codec (mp3,WMA, or AAC) is better for just voices?

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Pentium100:

--- Quote from: kitamesume on August 25, 2012, 08:40:44 PM ---edit: what are you up to anyway, if its for saving space then 320kbps mp3 is already overkill for voice records, musics has their range because of other instruments but voices arent even outside the 80hz-1.1khz range, although in extreme cases they could reach 60hz-7khz range, still not enough to reach the maximum 20hz-20khz recording bracket.
edit2: that was singing btw, speech only has a range of 80hz-255hz.

--- End quote ---

Voice goes up to about 8kHz - while the fundamental frequency does not go that high, the harmonics do. The 3.1kHz (300-3400Hz) bandwidth chosen for telephone is the minimum needed for the listener to understand what is being said (but with very limited ability to identify the speaker). 8kHz bandwidth allows better understanding and the ability to identify the speaker.

limefc:
Using MP3 CBR on voice is pretty damn dumb. VBR or ABR if you're using LAME.

Saras:
Most podcasts I have are in 64kbps and a few in 128kbps. I'd say 64kbps is enough for speech alone.

Pentium100:

--- Quote from: Saras on August 26, 2012, 08:48:26 AM ---Most podcasts I have are in 64kbps and a few in 128kbps. I'd say 64kbps is enough for speech alone.

--- End quote ---
For speech 32k can be enough, maybe even 16k for mono recordings.

Slysoft:
Why don't you just use ogg? it sounds way better than mp3 at those low bitrates

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