[Coco] CoCo 2 cassette audio on emulators

[Ricardo M. Ferreira]

On 17/01/2016 03:17,  Robert Gault <robert.gault at att.net> wrote:
> I've just done a test with MESS by taking an mp3 file and converting to a wave
> file. If the file is converted to 44100Hz, 8-bit, mono, it plays perfectly. Any
> other combination sounds awful.
Thanks for the tip, Robert!

Unfortunately, all formats that I've tried sound equally awful on XRoar...

I've tried the same files on MAME (0169), and the format you suggested 
sounds almost perfect here, except that the first half of the tape seem 
to "overlap" with the rest. OTOH, a PCM 16bit signed 22 kHz mono played 
perfectly!

BTW, I built MAME on Linux and, while I can open the UI with [Tab] when 
not running the CoCo 2 emulation, as soon as the CoCo 2 emulation starts 
the [Tab] key won't open the UI anymore. I've tried to change the 
keyboard shortcut but nothing seems to work... Have you faced this 
problem with MAME or MESS, and if so, did you manage to solve it?

[]s!