GSMFR encoder and decoder

[gur]

I downloaded and compile speech-coding samples with evalution version of ipp 4.1.

1) I have sound file (16-bit PCM 8000 Hz).
After running encodergsmfr.exe, file *.gsm differ from a file encoded by sox. Why ?

2) Why after encoding i can't decoding same file to PCM correctly ? Only white noise.

[Vyacheslav_Baranniko]

Generally, the GSMFR and other speech codecs from IPP 4.1stores a bitstream file informat specifiedfor testing purposes by correspondent spec.

Sox formatsare not supported.

An input fileis to be in raw pcm format.To decodebitstream file after GSMFR encoderback to PCM,you need to use the same options as one used forencoding. For example,

encodergsmfr.exe -l-v input.pcm output.cod

decodergsmfr.exe -l -v output.cod output.pcm

Regards

Vyacheslav