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...s the reason that we hear the crosstalk with fec and packet loss percentage>0 is that Opus uses information from the left channel to try to error correct the right channel and vice versa? I am trying to understand the origin of the crosstalk. Thanks. -Jon > On Jan 27, 2017, at 12:29 PM, Jon Lederman <jon at soniccloud.com> wrote: > > [This sender failed our fraud detection checks and may not be who they appear to be. Learn about spoofing at http://aka.ms/LearnAboutSpoofing] > > Hi Jean-Marc, > > Thank you. Yes, we do need both channels independent. So, if we encode...

On 27/01/17 12:16 PM, Jon Lederman wrote: > When you say that with fec enabled, the threshold is increased, do > you mean the bitrate - i.e., you need higher bitrate with fec enabled > to suppress crosstalk? Correct. Another effect I forgot to mention is that Using FEC will actually force SILK/hybrid rather than CELT, so i...

On 27/01/17 12:29 PM, Jon Lederman wrote: > Thank you. Yes, we do need both channels independent. So, if we > encode each channel separately, we will be sacrificing the > compression ratio we would achieve with stereo encoding, correct? Not necessarily. Stereo makes two assumptions: 1) It assumes the two channels are som...

...e trying to tune the parameters appropriately. Audio quality and reduction of crosstalk are critical for us. Thanks again. Jon Sent from my iPhone > On Jan 27, 2017, at 11:38 AM, Jean-Marc Valin <jmvalin at jmvalin.ca> wrote: > > Hi Jon, > >> On 27/01/17 08:31 AM, Jon Lederman wrote: >> We are trying to use Opus in a VoIP environment for sending stereo >> audio. We have noticed a phenomenon where when FEC is enabled and >> packet_loss_percentage>0, that there is a mixing of audio from the >> left channel into the right channel and vice versa....

Thank you. Very helpful. > On Jan 27, 2017, at 12:40 PM, Jean-Marc Valin <jmvalin at jmvalin.ca> wrote: > > On 27/01/17 12:29 PM, Jon Lederman wrote: >> Thank you. Yes, we do need both channels independent. So, if we >> encode each channel separately, we will be sacrificing the >> compression ratio we would achieve with stereo encoding, correct? > > Not necessarily. Stereo makes two assumptions: > 1) It assum...

...oberon.tex.zip 13-Jul-95 14:00 100K release-notes/ gpmpc.ps.zip 13-Jul-95 14:01 121K modula.ps.zip 13-Jul-95 14:01 122K modula.tex.zip 13-Jul-95 14:01 45K oberon.ps.zip 13-Jul-95 14:01 22K oberon.tex.zip 13-Jul-95 14:01 2K Enjoy. --- Jeffrey Ledermann lederman@dstc.qut.edu.au http://www.dstc.qut.edu.au/~lederman/ _--_|\ Faculty of Information Technology / QUT Queensland University of Technology \_.--._/ Box 2434 Brisbane 4001 AUSTRALIA...

...of packet loss. 3) We could encode each channel separately. In this case, we would have no crosstalk, but we would have a lower compression rate/efficiency. Thanks. -Jon > On Jan 27, 2017, at 12:24 PM, Jean-Marc Valin <jmvalin at jmvalin.ca> wrote: > > On 27/01/17 12:16 PM, Jon Lederman wrote: >> When you say that with fec enabled, the threshold is increased, do >> you mean the bitrate - i.e., you need higher bitrate with fec enabled >> to suppress crosstalk? > > Correct. Another effect I forgot to mention is that Using FEC will > actually force SILK/hy...

HI All, We are trying to use Opus in a VoIP environment for sending stereo audio. We have noticed a phenomenon where when FEC is enabled and packet_loss_percentage>0, that there is a mixing of audio from the left channel into the right channel and vice versa. That is, rather than hearing each channel in its pristine form as it was in the file, there is a combination of right and left

Hi Jon, On 27/01/17 08:31 AM, Jon Lederman wrote: > We are trying to use Opus in a VoIP environment for sending stereo > audio. We have noticed a phenomenon where when FEC is enabled and > packet_loss_percentage>0, that there is a mixing of audio from the > left channel into the right channel and vice versa. That is, rather...