BlocklyProp S3 - Modify default program to reduce volume

John Kauffman · 2016-11-02 23:17

I have three S3s running in a room while 15 other students are working on other projects. The combined volume of the S3s is high.
The factory default program is in SPIN which I haven't used in years. I would be grateful for help to change the parameters to reduce the volume of the tones.
I have attached a copy of the file as comes from factory but re-named it to avoid confusion.

Thanks, John

Dave Hein · 2016-11-03 01:14

There is a set_volume method in scribbler.spin. You could scale the vol parameter to a smaller value, which should reduce the volume for all sounds played by the S3.

John Kauffman · 2016-11-03 01:23

Just un-comment example line? I tried below and threw an error on the line "expecting instruction or variable."
Sorry to be thick, I have only been using PropC.
Thanks.

original:
PUB set_volume(vol)

'' Set the current volume level to vol (0 - 100) percent.
''
'' Example: scribbler.set_volume(50) 'Set volume level to 50%.

return _enqueue_tone(constant(VOLU << 13) | ((vol #> 0 <# 100) * $1fff / 100))

modified:
PUB set_volume(vol)

'' Set the current volume level to vol (0 - 100) percent.
''
scribbler.set_volume(50) 'Set volume level to 50%.

return _enqueue_tone(constant(VOLU << 13) | ((vol #> 0 <# 100) * $1fff / 100))

Dave Hein · 2016-11-03 18:38

Sorry, I should have been more explicit. Try this code:

PUB set_volume(vol)
  vol /= 2

  '' Set the current volume level to vol (0 - 100) percent.
  ''
  '' Example: scribbler.set_volume(50) 'Set volume level to 50%.

  return _enqueue_tone(constant(VOLU << 13) | ((vol #> 0 <# 100) * $1fff / 100))

By adding the line "vol /= 2" the volume will be cut in half. If you want it reduced further user 3 or 4 instead of 2.

BlocklyProp S3 - Modify default program to reduce volume

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