PCM to AMR & vice versa - Bad audio quality on 6630

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Tue, 2005-03-08 12:28
Joined: 2003-11-04
Forum posts: 6
Hi Guys,

I tried solution given by stenlik and lighthu for descriptors (no file involved)

http://discussion.forum.nokia.com/f...2APCM+to+amr%2A

http://discussion.forum.nokia.com/f...2APCM+to+amr%2A

Everything works fine on emulator except (as known) loss of PCM 256 bytes on emulator.

But when i try same app on 6630, quality is bad. To debug the reason i tried 320 buffer size on emulator and i observed on emulator as well quality is bad if the size of the buffer given to CMdaAudioInputStream is kept 320.

I remember somebody also mentioned similar problem.

Looking for response from somebody who could able to resolve this issue.

regards,
-nitin

Tue, 2005-03-08 13:38
Joined: 2005-01-29
Forum posts: 17
Re: PCM to AMR & vice versa - Bad audio quality on 6630
Hi Nitin

  Check the size of AMR buffer becoz when you are converting the PCM data to AMR it will take about 10% of PCM buffer size.

Regards.
Vipin
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