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

[Joël Krähemann]

On Mon, 2014-03-31 at 11:30 +0200, Joël Krähemann wrote:
> On Mon, 2014-03-31 at 10:27 +0200, Felix Homann wrote:
> > 2014-03-31 10:20 GMT+02:00 Joël Krähemann <joel at weedlight.ch>:
> >         
> >         
> >         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.
> >         
> > 
> > 
> > What are you talking about??? 
> 
> About scale. Am I wrong when I believe 440 Hz has physical property to
> be harmonic?
> 
> 
> 
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Note: 1/45 is 90 degree.

(250000000 * (1 / 45)) calculated with calculator on GNU/Linux equals:
5555555.555555556

This, some handy threading functions and nanosleep makes my application
run with a thread tree.

sf.net/p/ags

As I'm reflecting I recognize that there are 10^3 more zero's as I
wanted. I give it a try with: 250000

That would result about 4𝜇s

That could you have seen if you didn't ban me from
linux-kernel at vger.kernel.org:

GNU/Linux is great!

This changed my life:

    /* and now async */
    {
      static const struct timespec req = {
        0,
        (250000000 * 1 / 45),
      };

      if(!AGS_IS_DEVOUT_THREAD(thread)){
        nanosleep(&req, NULL);
      }
    }