Changes between Version 1 and Version 6 of Ticket #78


Ignore:
Timestamp:
Feb 6, 2007 6:01:19 PM (17 years ago)
Author:
bennylp
Comment:

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  • Ticket #78

    • Property Status changed from new to closed
    • Property Resolution changed from to worksforme
    • Property Summary changed from Noisy audio with upsampling to Noisy audio with upsampling in the conference bridge

  • Ticket #78 – Description

    v1 v6  
     1There are two problems here: 
     2 
     3 1. Problem with upsampling that introduces noise, and 
     4 1. Problem with resampling/upsampling, specific when it's used in the conference bridge and '''only''' when two or more sources are mixed together. 
     5 
     6'''For the first problem:''' 
     7 
    18The following file was upsampled with pjsua, from the original WAV file of 22050 Hz to 44100 Hz. You can hear clearly about the noise: 
    29 
    310http://www.pjsip.org/tmp/upsampling-noise.wav 
     11 
     12 
     13'''For the second problem:''' 
     14 
     15The following file was recorded by mixing two 16KHz sources and upsampled to 44.1KHz: 
     16 
     17http://www.pjsip.org/tmp/conference_noise.wav 
     18 
     19 
     20