What are the units on the CURRENT_VOLUME variable for a room when setting up or down?

[mellie]

I am trying to set up programming to just decrease the volume of a room by a certain value.  So I use the device variable CURRENT_VOLUME and set to -1.

The volume goes UP by 6.   If I say -20 it goes down 12.  What are the units?  I am very confused.... It also seems that it depends on what the current volume is whether it goes up or down using the minus sign...

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TIA

[Cinegration]

As far as I know it should be %. What device is controlling audio?

[mellie]

I have no idea what is controlling volume.  here is a snapshot of part of the "Tech Room" where the tower is:

[mellie]

Also, only the living room has surround sound, and that is what room I was testing the volume control.  All other rooms have standard sound.

[Cyknight]

C4 uses a 0-100 scale, and the driver handles converting that to whatever scale a 3-rd party device uses.

Sounds like you're looking at a receiver, and most of those use a curved DB rating, in that case the 'numbers' you see on the receiver will seem to jump around in odd ways - that's normal enough.

How WELL your programming would work is going to depend a lot on the driver - but most mainstream receivers are fine. Would need to know the specific receiver (and make sure it's running serial or IP to comment more.

 

[mellie]

I have the Sony STR-ZA810ES and these thingies:

Binary - 9 Series - 4K Ultra HD Media over IP Controller -
5 Binary - 9 Series - 4K Ultra HD Media over IP Transmitter - 
 4K HDMI Audio Extractor with ARC 
 

 

 

[Cyknight]

4 hours ago, mellie said:

I have the Sony STR-ZA810ES

I've not used the specific units, but generally speaking the Sonys have perfectly fine control. Like I said, you're not going to see the receiver jump by even steps, due to the difference between the linear % C4 uses and the curved dB settings on most receivers.