Re: Bass synthesizer


"Jim Carr" <newsgroups@xxxxxxxxxxxxxx> wrote in message
news:h0gOi.5775$Ut2.515@xxxxxxxxxxxxxxx
Mike Fleming wrote:

That's not the case. All the harmonics must zero-cross
(they are,
after all, sine waves which are a multiple of the
fundamental).


I can't envision that. Can you cite an illustration or a
more detailed explanation?

Thanks!

Not ALWAYS the case.

If the harmonics are lower in amplitude than the fundamental,
which is often the case, the harmonic waves will "ride" the
fundamental and will for SOME of their periods not cross zero
(create a change sign) and for some sine periods, where the
fundamental is close to zero, cause a "spurious"change sign.
To detect the fundamental the MY software would treat the
harmonic crossing similarly to contact debouncing as it tries
to focus down on the lowest frequency which would most likely
be presumed to be the fundamental.

There are no hard an fast rules so the software must be very
robust.

With the FFT method the smaller (and subsequently faster) the
data window the less low frequencies can be resolved. The
longer the window the more latency and low frequency
resolution. Yet another trade off.

peace
dawg


.

Relevant Pages

  • Re: Single Cat5e for Computer Network & Telephone?
    ... >> we're talking about harmonics. ... sine waves at one or more frequencies. ... > But ethernet _IS NOT_ analog. ... > This is one way to deconstruct signals. ...
    (comp.dcom.cabling)
  • Re: Additive Synthesis
    ... sounds by creating many different sine waves. ... harmonics over time. ... waveform that slowly morphs between a sawtooth and square wave. ... don't know whether it still counts as additive synthesis or not, ...
    (rec.music.makers.synth)
  • Re: Additive Synthesis
    ... sounds by creating many different sine waves. ... harmonics over time. ... waveform that slowly morphs between a sawtooth and square wave. ... don't know whether it still counts as additive synthesis or not, ...
    (rec.music.makers.synth)
  • Re: piecewise constant function with no low harmonics
    ... 10 low frequencies out of 100 are 0. ... complimentary pulses so that the 10th harmonics (the integral ... Copy the 4 pulses and arrange the copy to cancel out the ...
    (sci.math.num-analysis)
  • Re: analog multiplier help
    ... > I'm looking for an "mixer" circuit to detect a sine waves DC to 10MHz, ... If large harmonics are present on the LO then ... > Currently manufactured multiplier ICs I have found: ...
    (sci.electronics.design)
Loading