As far as I can see this is the Keyboard Level Scaling / Rate Scaling on the data sheet. My next project is to get that in there somehow. ‘Better’ can be the enemy of ‘good’ (enough).Ījxs.me ~ajxs/Yamaha DX7 Technical AnalysisĪn introductory technical analysis of the Yamaha DX7, detailing some of the known information about the synthesiser’s engineering. The journey can be more interesting then the destination.Īnd some form of approximation might be good enough. So…there’s a long way to go before you could ‘import’ DX7 sysex…or even to just faithfully recreate DX7 patches.īut…that doesn’t mean you shouldn’t try. Keep in mind that the envelopes stills needs tuning. OPL Series : this is an experimental implementation of the reversed engineered OPL family chips.The target of this engine is to be closest to the real DX7. Mark I : Based on the OPL Series but at a higher resolution (LUT are 10-bits).Modern : this is the original 24-bit music-synthesizer-for-android implementation.Since all of this is experimental, multiple engines will be available to be able to compare them easily. This does not only apply to the DAC, it also involves the bit resolution of the sine waves and the way that the amplitude is applied to each operator. Engine Typeĭexed can be configured to use some of the original math limitation of a DX synthesizer. And there is the deeper internals as well, like the limited bitdepth/rates. There are global options as well (including osc key sync that will restart all per voice osc at keypress). It doesn’t end with the per voice modulation options (and levels and curves and such). You are setting yourself up with quite a challenge, trying to implement a DX7 emulation in VCV Rack.
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