Patent ID: 7058568
Filing Date: 2006-06-06
Classification: G10L,H04J,H04L

Abstract:
1. In a system for transmitting audio over a data network; and wherein received data packets are stored in a jitter buffer in a receiver and read from the jitter buffer at a rate dependent on a jitter buffer latency, which can be modified during periods of quasi silence, an apparatus for determining if a data packet contains non speech audio or speech audio; and wherein audio received as a data stream is transmitted in one or more transmitted data packets, comprising: a non speech detection module, which determines whether the received data stream contains non speech audio or speech audio; an add header routine, which stores a first non speech identifier with the audio in a transmitted data packet, the first non speech identifier being stored in a header in the transmitted data packet; and a remove header routine, which detects the state of a second non speech identifier in the header of a received data packet to determine if non speech audio is stored in the payload of the received data packet, whereupon the jitter buffer latency can be modified.