Le Mon, 25 Jun 2012 14:08:07 -0400, Jerry Geis <geisj@xxxxxxxxxxxxxxx> a écrit : > > The best things to do would be to use something like a dbx, a > > feedback suppressor. The problem is than they are expensive pieces > > of hardware. The principle is simple: above a given (adjustable) > > input level, you get an output level with a gain of 1, and under > > this given input level, you get a gain (adjustable)< 1. That way, > > the feedback will never begin, so it will never get the opportunity > > to become louder and louder. The dbx are mostly used to suppress > > feedback on stages. > > > > It should be very easy to implement such dbx as a software > > effect, but I don't know if something like that already exist for > > linux. > > > > Ciao, > > Dominique > Dominique, > > I did some quick searching and didnt see anything like that. > Is this something you can implement? Unfortunately not. I am good with hardware, but not a programmer. If using jack, you can try 2 or 3 effects into the jack-rack. One is the crossover-compressor. The other is the RMS expander. Maybe you can find some setup with them that would do the trick. Another way to suppress the feedback would be to re-tune the audio. Generally, feedbacks are beginning at a given frequency and into a very small bandwitch. By changing the pitch just a little bit will suppress the feedback. You can do that with the jack-rack if rubberband is installed. It come with a LADSPA plugin called Rubber Band Pitch Shifter in the jack-rack. > > Thanks, > > Jerry > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. > Discussions will include endpoint security, mobile security and the > latest in malware threats. > http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user -- "We have the heroes we deserve." ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
