Title :
Multipurpose audio signal compander
Author :
Witte, Franz-Otto ; Backes, Rainer ; Klumpp, Markus ; Schidlack, Erik ; Ullrich, Manfred
Author_Institution :
ITT Intermetall, Freiburg, Germany
Abstract :
A new 20 b digital signal processor is presented which is especially designed to provide a cost-effective solution for audio data reduction and corresponding channel decoding tasks. The Multipurpose Audio Signal Compander (MASC) combines the computing power of a digital signal processor, the sophisticated features of a single chip controller, and generous portions of RAM and ROM. The MASC is a pipelined reduced-instruction-set-computer (RISC) machine with 25 ns cycle time; it is designed in 0.8 μm CMOS technology. The MASC is not only applicable for data compression tasks but also for multimedia, high-definition television (HDTV) digital audio broadcasting (DAB), echo cancellers, and other sophisticated consumer audio tasks. The first applications will be a full ISO Motion Pictures Experts Group (MPEG) audio decoder including Layer 3 and EUREKA 176 DAB channel and source decoder
Keywords :
audio signals; compandors; data compression; decoding; digital signal processing chips; pipeline processing; reduced instruction set computing; signal processing equipment; 0.8 micron; 20 bit; 25 ns; CMOS technology; HDTV; Multipurpose Audio Signal Compander; RAM; RISC; ROM; audio data reduction; audio decoder; audio signal compander; channel decoding; data compression; digital audio broadcasting; digital signal processor; echo cancellers; high-definition television; multimedia; pipelined reduced-instruction-set-computer; single chip controller; CMOS technology; Data compression; Decoding; Digital multimedia broadcasting; Digital signal processors; HDTV; Read only memory; Reduced instruction set computing; Signal design; Signal processing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
