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6815 Discussions

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

Alexander_U_3
Beginner
‎10-05-2012 12:42 AM
835 Views

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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Chao_Y_Intel
Moderator
‎10-10-2012 12:22 AM
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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
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Alexander_U_
Beginner
‎10-17-2012 02:29 AM
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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.
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Alexander_U_
Beginner
‎10-25-2012 02:04 AM
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Chao, Could you clarify this situation?
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