The background on the source image is slightly out of focus, but it is very rich in color and texture. The receiving image should be bright and clear. We did not include audio evaluations in our first round of testing. Audio quality in a videoconference depends on several factors, including the codec that is used for voice compression. The ideal videoconferencing audio codec is the one that offers the widest frequency response while using only a small amount of conferencing bandwidth.
Audio quality is also very dependent on the particular speakers and microphones.
For open audio and speakerphone solutions, there should be some form of echo cancellation to avoid picking up the received audio and re-transmitting it back to the source. Today, more and more videoconferencing systems have echo cancellation built-in. There may also be some form of automatic gain control to optimize the volume levels on the audio inputs. Much higher frame rates are possible even on standard analog phone lines if you reduce the resolution of the image or transmit fewer bits per frame. Peak quality is achieved by tuning the audio and video compression rates based on the speed of the communication channel and the amount of processing power available.