Yamaha CS80

Hi Laurie and all, let's see if I got it ;-)

What I told about high frequencies was a try to understand better what  Juergen said about his view of kind of a "bug" inside the cs80, that is some of the processed signal from EXP circuitry went into the bypassed signal ; we know that EXP adds loudness to the signal but I speculate this is not the case because ( I come back to the beginning ) because the signal should have been enhanced all over the place and there from the fft only the harmonic loss is evident.
You say also

>as you bend the fundemental down,
so do you bent the harmonic content

You mean that a low pitch fundamental determines low pitch harmonics? Of course ,Laurie,  the fact is that the waveform changes itself :in the case of squares if you put one shot next to the other of 16' to 2' pitched notes you will see that the lower pitched wave has a peak only and a smoothed body resembling more to a blend of a sawtooth and a sine; this means that a narrow numbers of harmonics remained and the fundamental component is stronger, at 8' for example, the wave looks similar to a triangle with peaks at its vertices and so on to resemble a pretty regular square. Why is that I wonder....I ask Juergen to be larger in his explaination.
All the best
Max

----- Original Message ----- 
  From: laurie 
  To: yamahacs80@yahoogroups.com 
  Sent: Tuesday, December 06, 2005 2:50 AM
  Subject: Re: [yamahacs80] harmnic loss - how is possible ?


  You do realise that harmonic content is pitched down with the
  fundemental.....such as the odd harmonics of a square wave ... they
  remain true to the fundemental... so as you bend the fundemental down,
  so do you bent the harmonic content..... on analog....harmonics aren't
  infinite.... 3-4k is .5 foot compared to a 16 foot  100hz fundemental
  and usually as you get further away from the Fundemental the harmonic
  overtones fade regardless of filters.....3200hz is 5 octaves above 100hz
  ......2560hz is 5 octaves above 80hz   ....1920hz is 5 octaves above 60
  hz...... I think this should explain some of the loss above 3k you are
  experiencing......

  Max Fazio wrote:

  >  Hi Juergen and all.
  >
  > >Not the wahwah. The volume pedal.
  >
  >
  > Maybe I'm dull about this: you say that the exp circuit influences
  > this harmonic loss: I must say that the file I got comes from a single
  > note transposed with footage levers ; if the exp circuit was armed I
  > should have been listening a filtering no matter of the footage but
  > there I hear this harmonic loss under a given frequency, that is
  > 100Hz.
  > This effect I bet that could be hearable sweeping the pitch down with
  > the ribbon.
  > The exp (volume) circuit acts as a loudness circuit as you correctly
  > told me but there I stop understanding because I wonder then:
  >
  > 1.If exp adds loudness then a louder component of low harmonix should
  > be added but the FFT of each tranposed part highlights a *decrease of
  > the amplitude in harmonix beyond 3 or 4 KHz* rather than an increase
  > in low harmonix.
  >
  > 2.If the exp circuit is not enabled the sound bypasses the circuit to
  > OE-output boards. So how could it be? I'm biased to say it should
  > rather be caused by the wah ( but I'm not convinced about this too )
  >
  > Please forgive me for not being much responsive but I 'd be happy to
  > receive from you who knows the CS polyphonics way more than me there
  > who can, an extended explaination because I didn't find this behaviour
  > on none of the synths out there.
  > MAx
  > Thanks for another reply
  >   ----- Original Message -----
  >   From: JH.
  >   To: yamahacs80@yahoogroups.com
  >   Sent: Monday, December 05, 2005 10:10 PM
  >   Subject: Re: [yamahacs80] harmnic loss - how is possible ?
  >
  >
  >
  >   > You mean that the wah pedal circuit alone influences the pure wave
  > because
  >   of some filtering or are the files affected by the wah?
  >
  >   Not the wahwah. The volume pedal.
  >
  >   JH.
  >
  >
  >
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