search for: get_echo_level

>I remember?I had to expose the echo cancelation level implementing a get_echo_level( ) function based on this: >http://lists.xiph.org/pipermail/speex-dev/2008-September/006889.html This is really a good idea to determine the frequency difference between capture and play of the sound card. But it need constant far-end voice and a long time because it must repeat the process of...

...De: limaoquan2000 <limaoquan2000 at 126.com> >Asunto: Re: [Speex-dev] Sound card problem in acoustic echo >Para: speex-dev at xiph.org, p_j_r_m at yahoo.com >Fecha: viernes, 23 de julio, 2010 22:42 > > >>I remember?I had to expose the echo cancelation level implementing a get_echo_level( ) function based on this: >>http://lists.xiph.org/pipermail/speex-dev/2008-September/006889.html > >This is really a good idea to determine the frequency difference between capture >and play of the sound card. But it need constant far-end voice and a long time >because it must re...

Thank you. But it will cost you a long time to get the accurate play and capture frequencies. Does your program test two frequencies of the sound card each time? Because different sound cards have different frequency errors. And the resampling program is also time consuming because the target frequency is so close to the sampling frequency of the input signal, isn't it? I have tested program

...eex-dev at xiph.org <mailto:speex-dev at xiph.org>, >> p_j_r_m at yahoo.com <mailto:p_j_r_m at yahoo.com> >> >Fecha: viernes, 23 de julio, 2010 22:42 >> > >> > >> >>I remember?I had to expose the echo cancelation level implementing a >> get_echo_level( ) function based on this: >> >>http://lists.xiph.org/pipermail/speex-dev/2008-September/006889.html >> > >> >This is really a good idea to determine the frequency difference >> between capture >> >and play of the sound card. But it need constant far-end...