The Better codec for 8/12/16kbps Speech

[nakTT]

Hi all,

May I know what is a good codec for 8/12/16kbps audio? The audio type is speech.

:thanks:

[tetsuox]

Try Speex.

[nakTT]

:thanks:

Updated: After some testings at 8kbps 8kHz, I found that Lame is better by far. Any other suggestion? From what I Know even Lame is not the best for this kind of low bitrate.

[smok3]

http://www.hydrogenaudio.org/forums/lofiversion/index.php/t44310.html

[Skelsgard]

Have you tried AAC?
The SBR/PS that HE-AAC uses are really good for low bitrates.

These are some samples using a 16kHz mono 16bit WAV file (resampled from a 44.1kHz stereo 16bit track).
http://rapidshare.com/files/256928348/Time_to_Relax.wav
http://rapidshare.com/files/256928382/Time_to_Relax.mp3
http://rapidshare.com/files/256928408/Time_to_Relax.mp4

[nakTT]

I have tried HE-AAC V2 (my focus is more on 8kbps) but it produce a background sound like a grinding sound when the person who speak press a high pitch voice even when I increased the bitrate to 12kbps and then 16kbps.

Forgive me for my english.

:thanks:

[smok3]

can you provide a short sample ~30s?

[nakTT]

Sure. But I have one problem. Can you suggest one good freeware mp3 cutter that cut the mp3/mp4(AAC) without re-encode.

:thanks:

[smok3]

open the mp3 in audacity or similar editor, cut the 30s out and then save as flac (which is lossles), post that flac somewhere (oh, and select the part when the grinding is the most obvious in your tests of course)

[nakTT]

Problem solved with Windows Media Encoder 9 Voice.

Thanks to everyone here for your help.

:thanks: