PitchWatch

Get your pitch right with pitchwatch!

Description

Hear me hum the G major (offkey!) and use pitchwatch to view the pitch keys displayed from the lowest key A0 to the highest key C8. Check out the link at http://www.bookrags.com/wiki/Piano_key_frequencies for more information about pitch keys. By the way, G major is a major scale based on G, consisting of the pitches G, A, B, C, D, E, F# and G (http://en.wikipedia.org/wiki/G_major).

The pitch calculation is based on the AMDF-fractional pitch period determination. The function is designed to operate optimally at the sampling rate of 8000Hz; nevertheless, you may adjust the window size (wlen) to suit your pitch watching needs.

Pitchwatch is best used with spsnip_gui available http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=11002&objectType=FILE. Have a fun time getting your pitch right! :)

Essential files: pitchwatch.m
Accompanying files: Hum.wav

• MATLAB release: MATLAB 5.3.1 (R11.1)

[John D'Errico]

(I don't have perfect pitch. Clearly its not inherited.)

This does have entirely adequate help to be used, but I'd love to have seen a few extra pieces of information in the comments. For example, add the bookrags link to the function help. I wanted to see a bit more information for those people who have lesser knowledge of audio, pitch, .wav files, etc.

A function like this is a great addition to the FEX, that someone with relatively little knowledge of the subject will find intriguing. This is a teaching tool that makes the FEX better. I'll tip my hat to Alan for providing this function.

[Ekaterinoslav Sirakov]

OK

[Jiraphorn]

 

[Jiraphorn]

 

[Jiraphorn]

very helpful