wav vs. celt 0.11.2, I found a difference in synthesizer Pop @64kbps |
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wav vs. celt 0.11.2, I found a difference in synthesizer Pop @64kbps |
 Oct 10 2011, 01:47
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#1
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Group: Members Posts: 14 Joined: 18-April 11 Member No.: 89900  |
Hello, Jean-Marc Valin
I Make accurate ABX with Audacity my result is, I audible the highs are smearing, Compare it self! Using audioequipments are RME Fireface 800 and audio-technica ATH40fs headphones Test sample |
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Oct 10 2011, 18:31
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#2
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 Group: Members Posts: 1568 Joined: 24-June 02 From: Catalunya(Spain) Member No.: 2383 |
64kbps is a low bitrate.
(And I will not even ask how can one do an ABX test in Audacity...) |
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Oct 10 2011, 18:59
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#3
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Group: Members Posts: 1318 Joined: 3-January 05 From: Argentina, Bs As Member No.: 18803 |
2304p,
Have You done any resampling in the middle of or after the conversion?. There is a symptom of noise shaping in your celt decoded file. Also not sure if 0.11.2 will be decodable in future. It will be more safe to wait for final specs of Opus. 0.11.2 works more optimally at 48 kHz. One should expect acceptable quality at 64 kbps but transparency can be achieved at higher bitrates. This post has been edited by IgorC: Oct 10 2011, 19:07 |
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Lo-Fi Version | Time is now: 19th June 2013 - 06:55 |
