[alsa-devel] is 440 Hz the true harmonic wave

[Joël Krähemann]

On Mon, 2014-03-31 at 09:45 +0200, Clemens Ladisch wrote:
> Joël Krähemann wrote:
> > Is 440 Hz the true harmonic wave?
> 
> 440 Hz is a frequency, not a wave.
> 
> A single sine wave does not have overtones, so it is not possible to
> apply the term "harmony".
> 
> I do not understand what you mean with "true".
> 
> > Is there a constant for it in glibc, like M_PI?
> 
> What would be the use of a definition like "#define HZ_440 440"?
> 
> 
> Regards,
> Clemens

I believe that 440 Hz is an approximation rather than true harmonic on
it's pressure. Or am I wrong? Sine is harmonic in default arc.

thank you!

Joël