Hello! Some time back, I added the Speex protocol to my version of VOCAL (www.vovida.org, VOIP tool). Recently, I also added PESQ (automated voice quality testing algorithm) to my tool and have been running some tests on a clean network. The source file is a woman reading some phrases meant to test various aspects of codecs... Speex has a respectable result of 3.67 Some other codecs I've tested: g.729: 3.78 g.726-16: 1.6 (very poor quality rating) g.726-24: 3.5 g.726-32: 3.98 g.711: 4.21 Take it easy, Ben -- Ben Greear <greearb@candelatech.com> Candela Technologies Inc http://www.candelatech.com
Hi Ben, What bit-rate were you testing Speex with? Also, after playing with PESQ a bit, I would say that results should be taken with a grain of salt (I've seen PESQ do quite stupid ratings). Cheers, Jean-Marc Le mardi 28 juin 2005 ? 23:37 -0700, Ben Greear a ?crit :> Hello! > > Some time back, I added the Speex protocol to my version of > VOCAL (www.vovida.org, VOIP tool). > > Recently, I also added PESQ (automated voice quality testing > algorithm) to my tool and have been running some tests on a clean > network. The source file is a woman reading some phrases meant > to test various aspects of codecs... > > Speex has a respectable result of 3.67 > > Some other codecs I've tested: > > g.729: 3.78 > g.726-16: 1.6 (very poor quality rating) > g.726-24: 3.5 > g.726-32: 3.98 > g.711: 4.21 > > Take it easy, > Ben
Francois Menard (Mailing List Account)
2005-Jun-29 18:37 UTC
[Speex-dev] PESQ results for speex 1.0.3
did you try speex in wideband mode ... what bitrate? f. On Tue, 28 Jun 2005, Ben Greear wrote:> Hello! > > Some time back, I added the Speex protocol to my version of > VOCAL (www.vovida.org, VOIP tool). > > Recently, I also added PESQ (automated voice quality testing > algorithm) to my tool and have been running some tests on a clean > network. The source file is a woman reading some phrases meant > to test various aspects of codecs... > > Speex has a respectable result of 3.67 > > Some other codecs I've tested: > > g.729: 3.78 > g.726-16: 1.6 (very poor quality rating) > g.726-24: 3.5 > g.726-32: 3.98 > g.711: 4.21 > > Take it easy, > Ben > > -- > Ben Greear <greearb@candelatech.com> > Candela Technologies Inc http://www.candelatech.com > > _______________________________________________ > Speex-dev mailing list > Speex-dev@xiph.org > http://lists.xiph.org/mailman/listinfo/speex-dev >
Francois Menard (Mailing List Account) wrote:> > did you try speex in wideband mode ... what bitrate? > > f.15kbps mode. It does significantly better with a different speaker (the male does better than the female), as well. I'm considering purchasing a commercial PESQ license and wrap the PESQ software in a server application. I could then allow other folks to run PESQ comparisons on my server through some API, either for free or for a fee. (ie, commercial customers for $$, open source & hoby-ists for free)... I'm hoping this might allow Speex & similar developers test their codecs in some standardized manner without having to pay the thousands of dollars for a PESQ license... Ben -- Ben Greear <greearb@candelatech.com> Candela Technologies Inc http://www.candelatech.com