Sampling frequency converting apparatus

Details Sampling frequency converting apparatus Sampling frequency converting apparatus

1997-10-07

1999-07-20

Kizou, Hassan

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708290, 702197, G06F 1717

Patent

active

059250933

ABSTRACT:
A sampling frequency converting apparatus according to present invention is such an apparatus in which, when a first digital signal of a sampling frequency Fsi is converted into a second digital signal of an arbitrary sampling frequency Fso by using a digital filter, the ratio between the sampling frequency Fsi and the sampling frequency Fso is obtained and this input/output sampling frequency ratio is utilized as a control amount for the sampling frequency conversion. The sampling frequency converting apparatus includes a buffer memory for temporarily storing the first digital signal, an operating unit for performing an interpolation processing with respect to the input/output sampling frequency ratio at every regular time and a calculating unit which calculates a read address of the buffer memory on the basis of the input/output sampling frequency ratio interpolated by the operating unit.

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