Hi there everyone,
So, I need your help with something that seems was not discussed before here as it's bit of a particular case to say the least.
I'm setting up a surround system in which each monitor (2 way SEOS12 + AE TD12M) has it's own stereo Buffalo III (se), each driver powered by an NCore amplifier. Loudspeaker crossovers will be managed by a dedicated computer with RME AES I/O cards (one AES pair per monitor) running IR's done with RePhase (so XO's + amplitude and phase correction).
I will offset each driver level and delay inside the host but I want to take the advantage and convenience of the high quality digital volume control built-in the ESS9018 DAC. If I recall correctly it's done over 32bit, the DSP being 48bit.
Now what I want to do as said in the title of this thread is to control volume on several Buffalo III at the same time.
To look at it another way, what I must do is control simultaneously and remotely several motorized pots, as volume control on the Buffalo DAC is done via a potmeter. (ADC connector)
What I've think about so far is controlling the motorized potentiometers by programming an Arduino microcontroller and buffer the output to the "x" number of pots I need to control. I don't think I need one microcontroller per motorpot, do I ? I also want to be able to program some reference listening levels so a microcontroller seems to be the only way to go.
Other thoughts : in place of a motorized potmeter which may be imprecise (but again, I will offset each driver level on the host computer) or has tracking inconsictancies over time, what do you think of using instead a resistor network like the Joshua Tree ? Such device has 128 steps (can it work with 0.5dB steps ?), can be remote controllable and has a mute function.
Not as easy as wiring a motor pot but what I want to do is far from easy !
I would really appreciate any help or ideas on that particular matter !
Cheers,
Stephane.
So, I need your help with something that seems was not discussed before here as it's bit of a particular case to say the least.
I'm setting up a surround system in which each monitor (2 way SEOS12 + AE TD12M) has it's own stereo Buffalo III (se), each driver powered by an NCore amplifier. Loudspeaker crossovers will be managed by a dedicated computer with RME AES I/O cards (one AES pair per monitor) running IR's done with RePhase (so XO's + amplitude and phase correction).
I will offset each driver level and delay inside the host but I want to take the advantage and convenience of the high quality digital volume control built-in the ESS9018 DAC. If I recall correctly it's done over 32bit, the DSP being 48bit.
Now what I want to do as said in the title of this thread is to control volume on several Buffalo III at the same time.
To look at it another way, what I must do is control simultaneously and remotely several motorized pots, as volume control on the Buffalo DAC is done via a potmeter. (ADC connector)
What I've think about so far is controlling the motorized potentiometers by programming an Arduino microcontroller and buffer the output to the "x" number of pots I need to control. I don't think I need one microcontroller per motorpot, do I ? I also want to be able to program some reference listening levels so a microcontroller seems to be the only way to go.
Other thoughts : in place of a motorized potmeter which may be imprecise (but again, I will offset each driver level on the host computer) or has tracking inconsictancies over time, what do you think of using instead a resistor network like the Joshua Tree ? Such device has 128 steps (can it work with 0.5dB steps ?), can be remote controllable and has a mute function.
Not as easy as wiring a motor pot but what I want to do is far from easy !
I would really appreciate any help or ideas on that particular matter !
Cheers,
Stephane.
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