[sdiy] Javascript Muse

[Donald Tillman]

It works on an iPhone, but there might be a bug.  The iPhone browser has a protective mechanism where it won't play sound on a web page unless that sound was initiated by a user action, like a mouse click.  Perhaps some combination of actions breaks that.

More...

I added the example "compositions" from the user manual, and made it so you can click on one to upload it into the Muse.

After carefully scrutinizing bad Muse videos at 1/4 speed (arrrgh!) I realized that Chamberlin's diagram is mostly incorrect.

What he calls a 5-bit binary counter is really a 4-bit counter, and the clock signal is the extra bit.  That's the "C 1/2" labeling on the panel, which makes sense.  I fixed the way this clocks the other counter and the shift register.  Also, I realized that the feedback shift register is an XNOR instead of an XOR.

Chamberlin claims the pitch is made with a DAC and VCO while the patent claims the aforementioned 1-bit serial accumulator DCO.  I don't know which the actual unit uses.

All fixed, refresh and enjoy.

  -- Don
--
Donald Tillman, Palo Alto, California
http://www.till.com


> On Sep 5, 2017, at 12:39 PM, Chris McDowell <declareupdate at gmail.com> wrote:
> 
> Ah, actually it -almost- works on my phone. I can interact with the switches, but no sound. 
> Really really cool anyway.