schmidtc Posted April 26, 2011 Report Share Posted April 26, 2011 Hi all. I'm finally giving my sammich 6581 the time it deserves. . . but it's behaving oddly. When I play the drum sounds over a midi keyboard the mapping jumps around. For instance, a bass drum will be on C#1, but after I play a few more keys it either disappears completely or gets replaced by another sound. The mapping also has several dead zones on the keyboard where a group of 6 or 7 keys in a row don't trigger the Sid. Is this some weird note stealing thing that's normal or is this a more serious problem? Thanks! Quote Link to comment Share on other sites More sharing options...
TK. Posted April 26, 2011 Report Share Posted April 26, 2011 When I play the drum sounds over a midi keyboard the mapping jumps around. For instance, a bass drum will be on C#1, but after I play a few more keys it either disappears completely or gets replaced by another sound. Yes, this is related to the dynamic voice allocation, as drum sounds have to share 6 oscillators, see also http://www.ucapps.de/midibox_sid_manual_d.html If a drum instrument is played very often (like bass drum), it could also be assigned to a dedicated oscillator. It's even possible to assign multiple instruments to the same oscillator, just for the case that they alternate anyhow (e.g. hi hats) (this also makes sense if a voice is routed through the filter) The mapping also has several dead zones on the keyboard where a group of 6 or 7 keys in a row don't trigger the Sid. Yes, there are 16 instruments mapped to two octaves (=24 keys). The remaining 8 keys are not mapped (initially I wanted to avoid confusion...) Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
schmidtc Posted April 26, 2011 Author Report Share Posted April 26, 2011 Got it. Thanks for such a speedy and thorough answer TK! I'll try the dedicated oscillators method tonight. Quote Link to comment Share on other sites More sharing options...
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