Just a clearing
>(...) because the signal should have been enhanced all over the place and there from the fft only the harmonic loss is evident.
Juergen , I'm referring to just the low pitched notes (below100Hz)
Salutes
M
----- Original Message -----
From: Max Fazio
To: yamahacs80@yahoogroups.com
Sent: Tuesday, December 06, 2005 10:42 AM
Subject: Re: [yamahacs80] harmnic loss - how is possible ?
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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Re: [yamahacs80] harmnic loss - how is possible ?
2005-12-06 by Max Fazio