[sdiy] Now tube type (6SN7) flip-flop circuit.. Follow up...

[Donald Tillman]

> On Feb 1, 2024, at 3:42 AM, Mike Bryant <mbryant at futurehorizons.com> wrote:
> 
> Actually on a pipe organ, the phase rarely matters as all the octave spaced pipes are only in perfect phase sync at 21 degC.  As they are such different sizes at any other temperature there is a difference in frequency variation across each pipe, which is why some organs can sound quite crap in the morning, sort of ok for afternoon weddings and absolutely glorious in the late evening.

I'm not sure what you mean by this.  I don't see any mechanism that would phase-sync pipes that are tuned an octave apart.  What does a "difference in frequency across each pipe" mean?

Pipe organ dimensions are very large compared to the wavelength of middle C, which is like 4 feet.  It's not at all clear what phase even means in such a situation.

  -- Don
--
Donald Tillman, Palo Alto, California
https://www.till.com