search for: anechoic

Is there anyone that could explain to me the phenomenon of Echo or at least point me where I can learn more? Why is this affecting the VoIP world so much and not the regular PSTN analog world? What does the PSTN industry have that they can handle such high volume of calls and there is "no" echo problem? Thanks, Daniel

I was just wondering if the original audio is always the best audio. I'm sure every compression format including vorbis is based on trying to make the output sound the closest to the listener to the input. I was wondering if there is any possibility that there would be a way of modifying the huffman tables or something in some way to make the output sound better than the original? ---