[Aquarius] One channel sound programming

[barnieg]

It's pretty straight forward to create simple sounds in basic with the sound command, however is their a way to create sounds with more flexibility without adding the mini expander. I noticed the on the memory map the sound and casette output are on the same port but how would say creating sound in machine code work in practice?

 

Barnie

[chjmartin2]

You mean like this: https://www.youtube.com/watch?v=G9d2S47fBq0

[barnieg]

You mean like this: https://www.youtube.com/watch?v=G9d2S47fBq0

That's amazing, are you running samples thru the 1 channel sound?

 

I'd like to produce more than just simple tones and beeps, effectively im looking at what's possible with an Aquarius + memory and nothing else loaded via tape file

 

Thanks

Barnie

[chjmartin2]

That's amazing, are you running samples thru the 1 channel sound?

 

I'd like to produce more than just simple tones and beeps, effectively im looking at what's possible with an Aquarius + memory and nothing else loaded via tape file

 

Thanks

Barnie

 

Yes in this case I was using Jay's Supercart I board and a 1 meg ROM with bank switching. It is a 100kHz 1-bit audio file. It uses everything the system has. The Aquarius has a fast CPU so you can switch the audio channel really fast. There are lots of resources on making useful sounds on a 1 bit channel.

 

https://www.gamejournal.it/the-sound-of-1-bit-technical-constraint-as-a-driver-for-musical-creativity-on-the-48k-sinclair-zx-spectrum/

[barnieg]

 

Yes in this case I was using Jay's Supercart I board and a 1 meg ROM with bank switching. It is a 100kHz 1-bit audio file. It uses everything the system has. The Aquarius has a fast CPU so you can switch the audio channel really fast. There are lots of resources on making useful sounds on a 1 bit channel.

 

https://www.gamejournal.it/the-sound-of-1-bit-technical-constraint-as-a-driver-for-musical-creativity-on-the-48k-sinclair-zx-spectrum/

Thanks. Amazing what could be achieved considering the limitations. As I want to load from casette whatever I do will need to fit into ram. Will post further when I've made some more progress

 

Barnie