Boots – shoes – and leggings
Patent
1997-08-06
1999-12-14
Mai, Tan V.
Boots, shoes, and leggings
G06F 1717
Patent
active
060008342
ABSTRACT:
A 1:2 or 2:1 audio sampling rate conversion filter converts audio signals from a first sampled rate to a second sampled rate has a multi-coefficient subfilter for receiving a plurality of audio signal samples from buffer memory obtained by sampling at the first sampled rate, and for performing convolution on the plurality of audio signal samples to generate a multi-coefficient based convolution product. In combination with the multicoefficient subfilter, the audio sampling rate conversion filter has a single coefficient subfilter for only receiving a middle sample from the buffer memory and for performing convolution on the middle sample using a single middle coefficient to generate a single middle coefficient based convolution product. The multi-coefficient based convolution product and the single middle coefficient based convolution product are used to convert the audio signal samples obtained at the first sampled rate to audio signal samples corresponding to signal samples obtained as if sampled at the second sampled rate. A commutator in combination with the multicoefficient and single coefficient subfilters is used to achieve a reduction in the number of multiplications required by the filter to obtain suitable rate converted signal samples.
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ATI Technologies
Mai Tan V.
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