If you can find the ad that ran for the TX81Z on the back of Keyboard magazine it had them pictured. One of them looked like two sine waves in phase with the frequency in one of them doubled, IIRC.
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-----Original Message-----
From:
[email protected] [mailto:
[email protected]] On Behalf Of PeWe
Sent: Tuesday, June 15, 2021 9:53 AM
To:
[email protected]; danforcz@...
Subject: Re: [YamahaDX] The 4OP to DX7 Conversion Project
Which additional waveforms are we talking about ?
I never owned a TX81Z,- just only DX7 which I sold,- DX7mkIIFD, TX816 and TG77 ...
Do we find the missing waveforms in SY&TG 77 and SY99 ROM ???
Were these single cycle samples or pre-programmed waveform-templates (like saw, square & trianagle) in ROM ?
I can imagine re-constructing patches in a TG77 when there were some info about add. waveform levels in given TX81Z patches.
The TG77?s filter and lo-fi FX come in addition ...
Am 15.06.2021 um 16:24 schrieb Daniel Forró via groups.io:
I think it wouldn’t be easy to get from the pair of operators a timbre
missing in the total sound of the patch. But maybe additional tweaking
of the other four operators in algorithm structure simulating 4OP
patch, in conjunction with those two operators can make it…
I'm now meditating about the other interesting challenge - to imitate
6OP sounds on 4OP synth, at least on those able to layer two patches…
:-) It would be difficult if not impossible to approximate non
existing algorithms and key scaling, different envelopes…
Daniel Forró
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