Scott Shawcroft c209165d43
Ramp values to and from a default value while active.
This reduces the popping sound on initial playback of an audio
sample.

The M4 DAC has a pop on startup that cannot be prevented. It also
does not allow readback so current values of the DAC are ignored.

Fixes #1090
2018-10-16 16:23:29 -07:00
..
2018-08-31 18:38:05 -04:00