What is the "Internal effects: Tremolo" and how do I get rid of it?

[VV1]

I have a percussion map which has some rolls mapped to the tremolo technique.

One is just using “Tremolo” and the other is using “Laissez vibrer + Tremolo”.

The tremolo slot is playing back correctly when tremolo is used in the score: it plays the correct note and it uses the full duration of the note value allowing the sampled cymbal roll to play through that duration.

When “l.v.” is added (Lassier vibrer) to the Tremolo, the combination is having undesirable behaviour in two ways:

1. It is triggering the wrong note. It is using the “Laissez vibrer” note from the percussion map and not the “Laissez vibrer + Tremolo” note.
2. It is trying to manually play in the tremolo by triggering repeated 32nd notes.

I notice that under the incorrect playback, that there is something marked “Internal effects: Tremolo”. I am assuming this is doing something to override the other instructions and giving me the wrong playback.
How can I get rid of this and get the desired playback of the lassiez vibrer cymbal roll?

Here is the example file:
Synchron Tam-Tam tremolo playback issue.dorico (883.2 KB)

[dspreadbury]

I think in this case the issue is that you don’t have the combination that Dorico is looking for mapped in your percussion map: “soft mallets” is added in the first bar, but you don’t have a “tremolo+laissez vibrer+soft mallets” combination, and when Dorico is unable to find the exact combination that’s requested, you’re not guaranteed to get the fallback that you might ideally want.

If it’s a possibility for you, I’d suggest either removing the “soft mallets” playing technique or creating additional entries in the percussion map that include the triggered playback technique in the combinations you’re defining.