HD-1 Layered Multisamples

[MIDIguru]

I was playing around with Daz's idea in the tips sticky:

In the HD-1, there is still fun to be had even if Step Sequencers are not available in that engine Smile For example each step of a wavesequence is able to generate two AMS values ... these two guys might be used to control pitch and reset the EG(s) on each step. That's a very cool function of the new implementation of wavesequencing.

I thought, wouldn't it be cool to have the wavesequence on a layered multisample turned down, just to use the AMS input from the wavesequence, and use the other layered multisample for the actual sound? Here are some things I noticed:

This is with a single oscillator program.

If MS1 is the wavesequence, it plays through fine and the AMS inputs from the wavesequence modulate as expected.

If you turn on MS2 and layer the two, they both play, but the second layered multisample doesn't seem to run through the same instance of the filter as MS1. If you are modulating filter 1 with the wavesequence AMS mod, then MS1 run through the modulated filter as expected, but MS2 seems to be running through a second instance of the same filter that is NOT being modulated. You can change the cutoff and MS 2 is filtered properly, but it's not being modulated by the AMS wavesequence.

Is this because every layered multisample generates its own voice and thus its own instance of the filter? Why can't the two voices share the same modulation if they are part of the same oscillator?

I noticed this with other modulations as well. So it seems that it is not possible to layer multisamples and have the wavesequencing modulate the pitch, amplitude, or filter of any of the other layered multisamples.

The other question is if you layer two wavesequences which one is the AMS source?

Can anyone comment on this?

[danatkorg]

Is this because every layered multisample generates its own voice and thus its own instance of the filter?

Yes, that's right. In fact, each Wave Sequence Step has its own voice, including filter, amp, driver etc.

Why can't the two voices share the same modulation if they are part of the same oscillator?

This allows you to layer two Wave Sequences, each with its own AMS modulation.

The other question is if you layer two wavesequences which one is the AMS source?

Here's a comment from the Operation Guide, under "Modulating Program parameters per step" on page 158:

"You may wonder ‐ what if the Program uses more than one Wave Sequence, and each is sending out different AMS values? Not to worry. Under the hood, each Wave Sequence actually has its own complete voice structure, which allows the AMS values to be different for each one."

Hope this helps!

- Dan

[MIDIguru]

Thank you Dan for explaining this!

It seems like this was set up to allow the most flexibility in designing programs. It would be cool if there was an option to share modulation between all instances in an oscillator. Kinda a dumbed-down simplified structure.

I think I can get the effect I want by making the wavesequence play a single wave over and over again. I'll try that later.