Conversation compression system, excitation processing module, and bit stream representing a frame of a conversation signal

摘要

"CONVERSATION COMPRESSION SYSTEM, EXCITING PROCESSING MODULE, AND BIT CHAIN REPRESENTING A TABLE OF A CONVERSATION SIGN". A conversation compression system (10) capable of encoding a conversation signal (18) into a bit stream for subsequent decoding to generate synthesized conversation (20) is disclosed. Conversation compression system 10 optimizes the bandwidth consumed by the bit stream by balancing the desired average bit rate with the perceptual quality of the reconstructed conversation. The conversation compression system (10) comprises a full speed codec (22), a half speed codec 24, a quarter speed codec (26) and an eighth speed codec (28) AS codecs ( 22, 24-9 26 and 28) are selectively activated based on a speed selection. In addition, full-speed and half-speed codecs (22 and 24) are selectively activated based on a type rating. Each codec (22, 24, 26 and 28) is selectively activated to encode and decode the talk signal (18) and different bit rates emphasizing different aspects of the talk signal (18) to enhance the overall quality of the synthesized talk (20). ).