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Digital Drive: Re: Defining upsampling. by rfbrw

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Re: Defining upsampling.

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My mistake in so far as I should not have included digital oversampling filters.
As for ASRC's they use polyphase filters and each subfilter of a polyphase filter is a digital low pass filter operating at Fs/2.

"Sheez. Filtering at fs/2 prior to increasing the sample rate is
a blatant impossibility."

Rubbish.I can do anything I want prior to altering the sample rate. Why I can even filter and not alter the sample rate. How else can one build a decimator if one does not limit the bandwidth by filtering prior to sample rate decrease.

ray


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Topic - upsampling article - solidgore 08:08:38 08/22/03 ( 47)