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Alexander_U_3
Beginner
89 Views

Problem with decoding G.722.1 Annex C payload from RTP in 7.0

Hi,

I use IPP 7.0 in part of speech codecs. OS - Linux.

I have RTP dump  with G.722.1 Annex C (32 kHz, 48 kbps) captured from Polycom phone.

To decode the dump I have written own app with using IPP 7.0 and IPP USC samples, but instead voice I have heard noise only.

Is needed any manipulations with RTP payload before set it to G.722.1C decoder?

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3 Replies
Chao_Y_Intel
Employee
89 Views

Hello, The USC sample include the one sample code to showing decoding the rtp dump file. Do you use that application, or do you directly calling G.722 codec. The codec only decode raw speech, no rtp headers. Thanks, Chao
Alexander_U_
Beginner
89 Views

Chao, thanks for your response. Yes, sure, I use USC sample code in my application. I try to decode raw speech frame without RTP header, payload only. I want to take your attention that I try decode G.722.1 Annex C, non-plain G.722.1. I can see that umc_speech_rtp_codec is supported on Windows only, and G.722.1 Annex C is not planned to support there.
Alexander_U_
Beginner
89 Views

Chao, Could you clarify this situation?
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