Zektor ProAudio 16™ DSP Preamp Audio Matrix - Manual (Page 23)

ClarityAudio Serial Protocol, Version 1.01, 11/8/12 21
Audio Control
To fade to a new level over a given period of time, add 10000 to any mute level setting.
To fade to a new level at a given ramp speed, add 20000 to any mute level setting.
The format used to jump immediately to a new level is:
^VMLZ @ zone,@zone,attn Set the mute attenuation of a zone or zones.
^VMLZ @ zone,+step$ Add ‘step’ number of 0.5dB steps to current setting.
^VMLZ @ zone,-step$ Subtract ‘step’ number of 0.5dB steps from current setting.
^VMLZ ?$ In polled mode, reads current settings of all changes.
^VMLZ @ zone,@zone,?$ Read current settings of given zone(s).
Response Strings:
^=VMLZ @ zone,vol$
Where:
@ zone = One (or more) zones to be affected.
attn = Mute attenuation in 0.5dB steps.
To jump immediately to a new mute volume, the range is 0 to 248.
To fade to a new level in a given time period the range is 10000 to 10248.
To fade to a new level at a given speed the range is 20000 to 20248.
‘VMT’ Set Muting (Fade) Times
The ClarityAudio allows the mute command to be ramped over time (fading), this command sets the
ramp time and ramp speed used when muting volume. All zones share the same times.
There are two different ways to fade volume while muting.
1 Mute volume over a set period of time.
2 Mute volume at a controlled ramp speed.
The VMT allows setting both of these.
The 1st parameter of the VMT command is the ‘ramp time’ setting. This indicate the amount of time
needed to ramp (or fade) from one volume to the next and is given in 1/10th of seconds. The setting of
10 would equal 1 second. This is the value used when 10000 is added to the VMLZ command setting
(See “‘VMLZ’ Set a Zone’s Mute Level” on page 20).
The 2nd parameter is the ‘ramp speed’ setting. This is given in 0.5dB steps per second. The setting of
40 would equal a 20dB per second ramp speed. This is the value used when 20000 is added to a the
VMLZ command setting.
The VMT command format is:
^VMT time,speed$ Set the ramp time, and ramp speed.
^VMT ?$ Reads current settings.
Response Strings:
^=VMT @ time,speed$
Where:
time = Volume ramp time in 1/10th increments. 1 = 0.1 second, 10 = 1 second, etc.
speed = Volume ramp speed in 0.5dB per second increments. 40 = 20dB per second ramp.
‘BLZ’ Set Zone’s Balance