[sdiy] 440Hz Reference Oscillator.

[Tom Rose]

To the Mac users GArage band has a very nice digital tuner and  
creating a looped ref tone is very easy.But don't forget your ears!
On Jun 6, 2006, at 2:22 PM, Tim Parkhurst wrote:

> On 6/5/06, Cole Groff <chonald at gmail.com> wrote:
>> Does anyone know where I could find a simple circuit to built a
>> reference oscillator for tuning?
>>
>> Cole
>>
>
> I know it wouldn't be the most portable solution, but would it help if
> someone just posted some WAV or even MP3s of 440Hz sine waves? Someone
> with a very stable, lab style function generator could do it easily.
> Maybe even post octaves above and below. It wouldn't be the best
> solution in the world, but it would be a handy tuning reference. I
> know I'd appreciate having a known 440Hz tone that I could access.
>
> And actually, it would be pretty portable... just put the files on
> your laptop or even your MP3 playback gizmo of choice.
>
> Tim (gizmo of choice) Servo
> -- 
> "Imagination is more important than knowledge." - Albert Einstein