[sdiy] Multi-output comb filter?

Vladimir Pantelic vladoman at gmail.com
Wed May 23 12:06:31 CEST 2018


https://en.m.wikipedia.org/wiki/Walsh_function



On Wed, May 23, 2018, 12:03 cheater00 cheater00 <cheater00 at gmail.com> wrote:

> Walsh functions? I'm missing the reference, sorry
>
> On Wed, 23 May 2018 10:23 Neil Johnson, <neil.johnson71 at gmail.com> wrote:
>
>> cheater00 cheater00 wrote:
>> > I like to faff around, Neil. Don't spoil my fun!
>> > Besides, unlike FFT this uses no multiplication or exponentiation, just
>> > integer addition, and each thing being added is just added 0, 1, or -1
>> > times. I'd say that's a pretty big win, wouldn't you?
>>
>> Sounds like Walsh functions all over again.
>>
>> Neil
>> --
>> http://www.njohnson.co.uk
>>
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