Title :
Sigma-delta modulation for audio DSP
Author :
Kershaw, S.M. ; Sandler, M.B.
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll. London, UK
fDate :
11/16/1993 12:00:00 AM
Abstract :
An automated procedure is presented for the design of high-order sigma delta single stage modulators for use with high-quality digital audio systems. Immediate application to data conversion is discussed, with the advantage of relaxed analogue component specifications due to the one-bit quantiser. Further, a novel application is presented, applying the relatively new technique of digital bitstream processing to a digital audio mixing structure. Initial simulations confirm the viability of this approach from a feasibility viewpoint, and the ultimate simplicity of the one bit signal format suggests considerable application opportunities in commercial digital audio products
Keywords :
audio equipment; audio signals; delta modulation; encoding; mixers (circuits); modulators; signal processing; analogue component specifications; application opportunities; commercial digital audio products; data conversion; design automated procedure; digital audio mixing structure; digital bitstream processing; high-order sigma delta single stage modulators; high-quality digital audio systems; one bit signal format; one-bit quantiser; sigma delta modulation;
Conference_Titel :
Audio DSP - Circuits and Systems (Digest No. 1993/219), IEE Coilloquium on
Conference_Location :
London
