[sdiy] Generating acyclic waveforms?

[cheater cheater]

Eric,
bear in mind that in stretched harmonic timbre, there will be
noticeable shift in the frequency of a partial from where it should
ideally be - but only starting with fairly high harmonics; those high
harmonics are usually of very small amplitude. We don't see them that
well on the scope (especially since the dot is 'fat'), but we do hear
them, because our ear can hear things you'd have to zoom into many
times to see them on a wave editor.

Cheers
D.

On Mon, Mar 22, 2010 at 19:52, Eric Brombaugh <ebrombaugh1 at cox.net> wrote:
> On 03/22/2010 11:27 AM, Ian Fritz wrote:
>
>> But the original question was whether wind instruments have stretched
>> harmonic spectra, and the answer is still emphatically no, because they
>> are practically always in the phase locked regime, as widely discussed
>> in the many books and publications on the subject.
>
> This agrees with my experience too - I spent several summers during
> high-school & college doing R&D on an electronic tuner that my father used
> for tuning pipe organs. Many hours spent staring at waveforms from different
> organ stops, and while the waveform shape changes slightly from one pipe to
> the next, a single pipe playing has a fairly static waveform. Hard to
> imagine how that could be without the harmonics being related by exact
> integer ratios to the fundamental.
>
> Eric
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