Hi everyone. For a few years now, I have been developing a Windows 
application designed to assist me in music theory study and instrument 
practice.
Currently, I have integrated a configurable metronome, a chord builder 
that provides fingerings for all supported string instruments, a scale 
builder, and several other features.
I would like to add a tuner, and I am considering using Csound for this 
purpose. My idea is as follows:
When the user selects the tuner function from the menu, the app starts 
listening via the system microphone. If it detects a note—specifically a 
fundamental frequency—that remains stable for a duration sufficient to 
distinguish it from background noise, the app recognizes it and displays 
an output such as:
xxx Hz <-55>C4
This would indicate the frequency and the distance from the nearest note 
in cents.
In your opinion, is it feasible to implement this using Csound?
Thank you very much. Gabry.

-- 
Gabriele Battaglia (IZ4APU)
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Hello Gabry,
I think it should be possible. Csound has opcodes to detect pitch. You should 
also be able to detect if a detected pitch stays in a very small range for a 
while. From the top of my head, I'd think it might be interesting to find the 
closest desired pitch and give the number of cents to match it, but even that 
should be possible. With my control signal quantiser I have certainly managed 
to pull an incoming frequency to the near43est matching note.

All in all, it might be a good project to sharpen your skills. :)

Best wishes,

Jeanette

Gabriele Battaglia, May 11 2026:

> Hi everyone. For a few years now, I have been developing a Windows 
> application designed to assist me in music theory study and instrument 
> practice.
> Currently, I have integrated a configurable metronome, a chord builder that 
> provides fingerings for all supported string instruments, a scale builder, 
> and several other features.
> I would like to add a tuner, and I am considering using Csound for this 
> purpose. My idea is as follows:
> When the user selects the tuner function from the menu, the app starts 
> listening via the system microphone. If it detects a note—specifically a 
> fundamental frequency—that remains stable for a duration sufficient to 
> distinguish it from background noise, the app recognizes it and displays an 
> output such as:
> xxx Hz <-55>C4
> This would indicate the frequency and the distance from the nearest note in 
> cents.
> In your opinion, is it feasible to implement this using Csound?
> Thank you very much. Gabry.
>
> -- 
> Gabriele Battaglia (IZ4APU)
> --... ...--  -.. .  .. --.. ....- .- .--. ..-  - ..- . .
> Sent from my Giant desktop PC.
>
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>       https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
>
>

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Il 11/05/2026 19:59, Jeanette C. ha scritto:
> Hello Gabry,
> I think it should be possible. Csound has opcodes to detect pitch. You 
> should also be able to detect if a detected pitch stays in a very 
> small range for a while. From the top of my head, I'd think it might 
> be interesting to find the closest desired pitch and give the number of 

...

Hi Jeanette. Thanks a lot for your thought.

I'll try it.

Gabe.

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