voip wrote:There is a mono multisample called "Sonar" in ROM that could form the basis for creating a Program with the required sound.
Create a new Program (Program Bank E above E095 may contain some blank programs). In the Osc 1 section (menu page 2 Osc1 Basic), select Mono as the sample type then tap the arrow for the Osc 1 sound. This will create a dropdown menu. Select the Wavestation tab on the right and choose multisample 0476 Sonar. The sample is fairly short, but sounds continuously whilst a key is pressed, so it is possible to hear it repeating, with the repeats getting faster with higher notes. The rest is down to setting suitable attack, sustain and other parameters in the Page 4 Amp 1 EG tab, and adding effects.
Before doing any of this, in the Global Memory Protect section, ensure Program is unchecked.
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Thank you very much, voip, for your time and providing the detailed info and explanation on this. I hadn't seen that multisample. Still working out the parameters and effects to get the sound design right - I am also still exploring other sounds to use in the Oscilator, so that the sound meets more the effect I am looking for. still some hours of work ahead.

Thanks once again for your help.