A monolithic asynchronous sample-rate converter for digital audio

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, provid...

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Bibliographic Details
Main Authors: Adams, R.W., Kwan, T.
Format: Conference Proceeding
Language:English
Subjects:
Clocks
Delay
Digital integrated circuits
Filter bank
Frequency conversion
Oscillators
Sampling methods
Signal design
Signal processing
Very large scale integration
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Summary: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.< >
DOI:10.1109/ISCAS.1993.394136