Patent ID: 8788079
Filing Date: 2014-07-22
Classification: H04L,H04N,H04R

Abstract:
1. A method for monitoring quality of audio delivered over a communications channel, the method comprising: defining a sequence of two or more timestamps, the timestamps being associated with a measure of time progress while delivering audio to a client computer, each timestamp including a plurality of timestamp bits; modulating an audio signal with the sequence of two or more timestamps, the modulating being with pseudo noise (PN) codes when a timestamp bit has a first logical value, and modulating the audio signal with a negative of the PN codes when the timestamp bit has a second logical value; transmitting the modulated audio signal to the client computer; extracting the timestamp bits from the received modulated audio signal to obtain two or more received timestamps; determining a quality value of the audio based on the two or more received timestamps; and storing the quality value of the audio in computer memory.