[Opencore-amr-devel] SID packet decoding giving Windy/bursty sound

[Tarun M. <tar...@gm...>]

Hi All,

I am facing one issue while decoding the AMR SID packets.
The experiment is as follows:
When AMR-WB stream is received then our application saves the SID packets.
Now when there is no frame received between SID FIRST and SID UPDATE. then
we feed saved AMR SID(latest). this produces windy sound.

This behaviour is not for all the packets but only after some time.
Our code is keep on decoding the fed AMR data and AMR SID frames.After
certain interval, burst/windy sound comes.


Even if we will not feed this saved SID packets then while decoding
received SID packets, it does not generate any windy / bursty noise.

Only when we feed saved SID packets in interval of SID FIRST and SID UPDATE
then windy noise comes. this is also not for every packet decoding. sound
comes after some interval. i m not getting what is reason of this noise.


Can any one tell why this windy sound comes?
Or is there any way to avoid this windy/bursty noise.
i  have used libopencore-amrwb.so.0.0.3 for AMR-WB decoder.

With Regards,
Tarun Maheshwari
09555879792