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Patent Review on Multi-rate Digital filter for audio sample-rate conversion

Patent name: Multi-rate Digital filter for audio sample-rate conversion
US Patent No: 6,487,573 B1

This patent emphasises on method for providing sample rate conversion filter on an input stream of sampled data provided at a first rate, to produce an output stream of data at a second rate different from the first rate. The input stream of sampled data is operated on with a first low order interpolation  filter routine to produce first intermediate data
 The stream of intermediate data is operated on routine, having a substantially small number of operations to calculate the to produce a second stream of intermediate data. The Second Stream of intermediate data is Operated on  routine to produce the output stream of data.

Comments

  1. UnknownMay 1, 2017 at 9:34 PM

    Low Pass Filters are used in most of the equalizers as well for the same purpose.

    ReplyDelete

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