robert bristow-johnson wrote:
On 2/11/13 6:48 PM, unruh wrote:
["Followup-To:" header set to comp.protocols.time.ntp.]
why do that?
hey guys, fix the Newsgroup: header here.
On 2/11/13 6:48 PM, unruh wrote:
> ...
> Yes. However what you can do is to filter out the all but the strongest
> harmonic, and count which harmonic number it is.
how do you know what the harmonic number is? how would that information
be determined in the general case.
This is what FFT was developed for, a single piano key will turn up as a
somewhat smeared comb function, with peaks around the fundamental
frequency plus the main harmonics.
Doing multiple FFTs should also show you any time-based change in pitch
of the various peaks.
Terje
--
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"
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