search for: 25khz

I've just installed RC2 and I'm very excited about the quality. It's so much better than MP3. This is the first version I've used since I just found out about Ogg Vorbis. I did notice that very high frequencies seem to be missing but since not many people can hear much above 18 KHz it's not much of an issue. I suppose this resolves the hiss problem so prevalent in MP3.

Hi, I've been testing out the speex narrowband codec at low data rates (using linphone and Counterpath's Eyebeam). I'm finding that at data rates of ~25 kbps, the quality of the voice call is very poor. I know speex is supposed to work at much lower data rates (~2 kbps). Has anyone verified that speex will produce reasonable quality at low data rates? Are there any existing

Hi all, I have a script that allocates an ADSL(1500K/256K) bandwidth to three users. My idea is to allow each user having a guarentee rate, while each one is allowed to burst to the max rate while no one is using the bandwidth. I use imq0 for uplink (for some mobility reason) and imq1 for downlink. Everything works smoothly except for VoIP traffic. There are three VoIP phones attached to a