Title :
A monolithic asynchronous sample-rate converter for digital audio
Author :
Adams, Robert W. ; Kwan, Tom
Author_Institution :
Analog Devices Semiconductor, Wilmington, MA, USA
Abstract :
The theory of asynchronous sample-rate conversion is presented using both the highly-interpolated signal-processing model, as well as the polyphase filter model. A closed-loop address-tracking system is disclosed. It solves the problem of clock-edge arrival estimation while, at the same time, providing a low-jitter selection of the correct polyphase filter for each sampling instant. The proposed signal-processing algorithm is implemented in an all-digital VLSI chip. Measurement results show good agreement with theory
Keywords :
VLSI; asynchronous circuits; audio systems; convertors; interpolation; jitter; all-digital VLSI chip; asynchronous sample-rate converter; clock-edge arrival estimation; closed-loop address-tracking system; digital audio; highly-interpolated signal-processing model; low-jitter selection; polyphase filter model; sampling instant; Clocks; Delay; Digital integrated circuits; Filter bank; Frequency conversion; Oscillators; Sampling methods; Signal design; Signal processing; Very large scale integration;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.394136
