Method and apparatus for audio sample rate conversion within a d

Details Method and apparatus for audio sample rate conversion within a d Method and apparatus for audio sample rate conversion within a d

1997-12-02

2000-01-18

Heckler, Thomas M.

Electrical computers and digital processing systems: support

Synchronization of clock or timing signals, data, or pulses

341126, G06F 500

Patent

active

060165502

ABSTRACT:
A method for providing audio sample rate conversion within a data-processing system is disclosed. An audio data stream is first received. If the input sample rate of the audio data stream is not equal to a target sample rate, several frequency multiplications or frequency divisions are selectively performed until the target sample rate is reached. Then, the audio data stream is passed through a lowpass filter having a cutoff frequency that is less than half of the target sample rate. Finally, the audio data stream is output.

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Analog Devices et al., "Audio Codec 97, Component Specification", Revision 1.03, Sep. 15, 1996; pp. 1-50.

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