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Ticket Resolution Summary Owner Reporter
#76 fixed No audio on MacOS X 10.4 when resamplilng is used bennylp bennylp
Description

When OSX sound device is opened on non-native sampling rate, no audio input is audible.

#77 fixed Allow playback of multiple files in pjsua bennylp bennylp
#78 worksforme Noisy audio with upsampling in the conference bridge bennyp bennylp
Description

There are two problems here:

  1. Problem with upsampling that introduces noise, and
  2. Problem with resampling/upsampling, specific when it's used in the conference bridge and only when two or more sources are mixed together.

For the first problem:

The following file was upsampled with pjsua, from the original WAV file of 22050 Hz to 44100 Hz. You can hear clearly about the noise:

​http://www.pjsip.org/tmp/upsampling-noise.wav

For the second problem:

The following file was recorded by mixing two 16KHz sources and upsampled to 44.1KHz:

​http://www.pjsip.org/tmp/conference_noise.wav

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