how do i compress a wav smaller than 120k !?

VIPER_1069

VIPER_1069

1
Im looking for a program/freeware pref that can save out a WAV as small as possible to prolly 2 bit mono i know windows sound recorder will save as 'gsm 6' but i need it to be PCM or AC PDM

i managed to get it down to 120k 4bit mono but need it less than that around 40-50k without a massive loss in quality :)

thanks in advance :)
 
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celtic_druid

1
If it isn't essential, then I would suggest you use the speex ACM codec which lowest setting is 2.1 Kbit/s 8Khz mono.

Also there is a big difference between DOS based and a windows commandline program.
 
VIPER_1069

VIPER_1069

1
I hate dos /commandline its sooooooo er time consuming lol for me anyhow :)

i just need a program that i can feed a short wav in and out put in a small compressed PCM/IMA ADCPM (made a typo above :( ) format in 8bit or less mono :)
 
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LTR12101B

1
SOX might NOT be the answer, it looks like licencing problems have confined most/all of it's ADPCM to be read only.

I tried Germanix encoder - but it's a little unstable on my system, and the G726 (2 bit) was extremely poor, or incorrect.

Not sure IMA ADPCM goes down to 2 bit - I think I read that it's specified, but it doesn't usually seem to be available.
 
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celtic_druid

1
ffmpeg can do adpcm ima. Commandline again I am afraid though. Just think how much easier it is if you want to convert lots files though.

ffmpeg -i test.wav -ar 8000 -ac 1 -f wav -acodec adpcm_ima_wav out.wav
 
VIPER_1069

VIPER_1069

1
lol will have a go when i can be bothered thanks for your help guys :D

had a few bios probs that seem to have been solved with a new flash :)
 
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