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Audio Taper

 

Hi All,

Has anybody written an audio taper module? I have a demanding client that has an installation with WAAAAY too many Bose ESP processors and they want audio taper functionality.

I have tried mapping in S+ using a formula I found online, but it is clunky and kinda opposite to what we want.
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Cheers
Phil
 

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The decibel SPL is basically the change that is detectable by the human ear/brain . . .? In practice there is a whole bunch of volume knob that is too quiet to hear in a real world environment, so we will set the lower limit to maybe -40 and the upper limit anywhere from 0 to maybe +20.? Although the specific numbers will vary per application, the basic idea is that there are maybe only 50 ¨C 60 steps involved in adjusting the volume of a system in increments that are actually detectable by the listener.? Bose ESP maximum is -60 to +12, so 72 [1dB] steps.

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So, the quickest way (process time) to do this is to use ASCALEL to get the desired number of steps while still showing full scale on the slider/gauge, then use EQU to get a digital representing each step and an INIT to send out the level that corresponds to each step.? You can use the formula, in conjunction with the data from Bose about any scaling they may apply internally or in the Crestron module(what?), to figure out what the value for each of the INIT outputs should be.? Really easy, really quick response, and the customer will get what they asked for.? Don¡¯t forget to go to the site and test with SPL meter to ensure that 1dB change on control element is actually 1dB change in SPL.

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That said, the utility of such a thing is negligible in a commercial sound system so the eventual result will be ¡°set it here at such-and-such time¡±, which in a cheaper system would be commonly implemented with tape and or sharpie marks for the staff to rely on.?

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/* does ¡°Demanding Client¡± = ¡°Poser that read a thread using audio taper potentiometers versus linear taper¡±?? Hmmm . . .? You could probably just tell them that is already handled internally in the Bose system (it is Bose, after all)*/

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From: <[email protected]> on behalf of Phil Moore <phil@...>
Reply-To: <[email protected]>
Date: Wednesday, December 28, 2022 at 10:04 PM
To: <[email protected]>
Subject: [crestron] Audio Taper

?

Hi All,

Has anybody written an audio taper module? I have a demanding client that has an installation with WAAAAY too many Bose ESP processors and they want audio taper functionality.

I have tried mapping in S+ using a formula I found online, but it is clunky and kinda opposite to what we want.
--
Cheers
Phil

 

Actually, my client is a fully fledged audio engineer and electronics engineer who regularly operates similar venues (a stadium in this case).

Bose is handling back of house and function spaces. The lowest tenderer won in every aspect of the AV installation.

My client is trying to give the owner what they actually need.

Thanks for the init/equ idea - way faster than doing it in S+!
--
Cheers
Phil
 

I use some combination of log, antilog and scalers in between. Result is, fader on TP is at around 50% when DSP level is at 80%, making higher volumes levels less "sensitive" when using fader.
 

Hi Folks,

human hearing uses logarithmic scale, therefore a logarithmic volume control should be used. The dB scale is logarithmic, therefore does the job well.
However, if you want to adjust volume more precisely, you might want to stretch the volume control in the upper range, see the fader on professional mixing consoles like this one:

I never thought about this before, will give it? try with the approach from Zac.

Best regards
Crestronfreak55
 

Human hearing might be logarithmic but your eyes are not. Moving the fader from 80 to 90% will result in dramatic volume change, that the fader movement does not represent.

If I was coding it for myself, I will absolutely leave it untouched. Good luck explaining to the average Joe's wife the dB scale...thus I strech all of them or disable touch settable.?

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