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speech audio compression format

Sep 25, 2011 at 3:47 PM

i am new to naudio but got the basics sorted and manage to record and playback audio.

i am intending to record/playback a large number of speech audio files.

now I am looking for an audio compression format supported by naudio for reading/writing these from/to disk.

unfortunately it seems there is no mp3-writer to go with the mp3reader. so that's out the window.

compression rate should be high, so i don't mind a lossy format. i am aiming at decent but not first rate audio quality. 

any suggestions?

cheers :)

Oct 6, 2011 at 4:50 PM

to encode MP3, you could use lame.exe. Alternatively, you could use an ACM codec. The compression rate for the ones supplied with Windows (e.g. mu-law, ADPCM etc) doesn't tend to be high though. If it is just speech, it is common to sample in mono, 16 bit, 8kHz (or 16kHz for slightly better quality).