SOX and GSM files ... help

i need to convert my .wav files to .gsm files

i tried the sox command :

sox input.wav -r 8000 -c 1 output.gsm resample -ql

but i didnt work! i also installed the libsox-fmt-gsm! and still doesnt work

Error displayed :

cannot … Uknown file type ‘gsm’

is there any other way or another program that can convert wav files to gsm files? or even to create new gsm files from scratch ??? :open_mouth:

I suspect gsm format of sox is not properly installed, which OS are you using ? Confirm whether it is installed correctly or not.

Godson Gera
Asterisk consultant India