Glad you're finding it useful.this is terrific - I've been using it this afternoon to improve some of my envelopes. Thanks!
Good luckI need to produce some sounds for bells and chimes so will give it a go.
A repository of existing ones would be great, either to use our modify.
Page 99 of 'Making Music on the BBC Computer' by Ian Waugh has a section called 'Bells and the BBC Micro' which might be of interest.
Just playing around with the random pitch generator, with all channels set to default envelope 1, produces a fair few chimes. From there one can experiment with the FM and ADSR.
A few more things while I think of them:
Having said all that stuff about leaving the sustain (AS) on 0, I'm now coming up with reasons to change it. But certainly if anyone is new to the envelope, it's good to keep sustain on 0 to begin with until you get used to the relationship between duration, AA, AD and AS. Not to mention AA's connection to ALA and ALD's connection to AD and AS. All quite confusing and it took me a long time to get my head around it. With sustain set to less than zero it goes from being an ADSR to more of an ADDR, which for certain fx might be desirable.
On FM:- Say your starting pitch is 100 and you set PI1 to 4 and PN1 to 3 with TIME at 20. You might expect to hear pitch 100 followed by 104 and 108. But the first pitch you actually hear is 104 followed by 108 and 112. You can prove this by switching between a PN1 value of 1 and 0. This is important to note if you're trying to create special musical effects and keep everything roughly in tune. I mention it because I think the BBC User Guide is a little bit unclear on this point.
Statistics: Posted by keyscompany — Fri May 09, 2025 9:27 pm