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Talk:Waveform analysis/Doh ray me: Difference between revisions
Average pitch or average frequency?
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:http://en.wikipedia.org/wiki/Tonic_sol-fa
:These have used digraph spelling variant with a single reh. (do, reh, me, fa, so, la, te, do), but I don't suppose that matters. You must remember Julie Andrews: Doe - a deer a female deer, Ray - a drop of golden sun, etc :) [[User:Markhobley|Markhobley]] 14:03, 12 July 2011 (UTC)
==Average pitch or average frequency?==
I think for this task we could use either average pitch or average frequency to achieve this, although I am fairly open minded as to what methods should be used here.
I think we first need to examine the waveform to determine if it is fairly even. (Hopefully, it will just be a "lah" sound from the microphone.
If the given waveform is fairly even, then I am thinking that we could take the modal result of the frequencies used throughout the given waveform and use the mathematical mode for our average, or if the results do not produce a mode, then we take a median.
Others have suggested Fast Fourier Transformation and Enhanced Autocorrelation functions to determine the pitch.
Ideally we want an algorithm that can make the decision reasonably quickly, so that it can be used in sing along type applications, where temporal media is used to provide the waveform, and the results are displayed on the screen as notes are sung into the microphone.
[[User:Markhobley|Markhobley]] 18:03, 12 July 2011 (UTC)
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