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Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux
From: |
Elvis Dowson |
Subject: |
Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux |
Date: |
Thu, 12 Aug 2010 20:06:41 +0400 |
Hi Alex,
On Aug 12, 2010, at 1:03 PM, Alexandru Csete wrote:
> Try to resample the audio to 44.1 kHz or 48 kHz using a
> rational_resampler block. That might solve it.
Adding the Rational Resampler, with decimation = 2 and interpolation = 3, works
in terms of resampling. The two separate wave files created before and after
resampling sound correct.
However, when I am listening to the audio in real-time, there are severe audio
crackles and distortions.
I also notice that there are a lot of audio over-runs in my console output:
>>> gr_fir_fff: using SSE
aUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaUaU
This behavior is the same, whether I run GNU Radio natively on my iMac or
inside a virtual machine using both Ubuntu 10.04 and 9.10.
What do you think the root cause is?
Best regards,
Elvis Dowson
- [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Alexandru Csete, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux,
Elvis Dowson <=
- Message not available
- Message not available
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Eric Blossom, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Alexandru Csete, 2010/08/13
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/13
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Philip Balister, 2010/08/12
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Eric Blossom, 2010/08/13
- Re: [Discuss-gnuradio] Distorted playback of real-time audio on Linux, Elvis Dowson, 2010/08/13