Groups > sci.electronics.design > #462184

Re: Quad Potentiometer - Does such a thing exist?

From	Winfield Hill <hill@rowland.harvard.edu>
Newsgroups	sci.electronics.design
Subject	Re: Quad Potentiometer - Does such a thing exist?
Date	2017-05-29 10:29 -0700
Organization	Rowland Institute
Message-ID	<oghlp001f08@drn.newsguy.com> (permalink)
References	<44gnic1587eql5ed4oi6m75j8nj60hg4rk@4ax.com> <oghfhu012g4@drn.newsguy.com> <oghjpu$uki$1@gioia.aioe.org>

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Jan Panteltje wrote...
>
>On a sunny day (29 May 2017 08:42:54 -0700) it happened Winfield Hill
><hill@rowland.harvard.edu> wrote in <oghfhu012g4@drn.newsguy.com>:
>
>>oldschool@tubes.com wrote...
>>>
>>> My goal is to take a 4 channel (quad) sound system ...
>>
>> How about reading the value of a single pot, calculating
>> the desired gains and combinations, and use multiplying
>> DACs to effect the fractional sourcing for each output.
>> Hey, you'll only need 16 DACs to cover all combinations!
>>
>> Haha, that makes it clear why digitizing four channels
>> and computing new outputs in real time makes more sense.
>> Try an Arduino Zero running at 48MHz, easy programming.
>> Or step up to the Teensy 3.6, fast, 180 MHz.  Advantage:
>> extensive audio libraries written by Paul J. Stoffregen.
>> Plug Teensy into an adapter board to use Arduino shields.
>
> 16 DACs?
> 4 channels?
> 160 MHz?
>
> In the attic I think I may still have some of those Philips
> i2c controlled audio potmeters.. something like TDA7318
>http://www.google.nl/url?q=http://www.st.com/resource/en/datasheet/CD00000150.pdf&sa=U&ved=0ahUKEwiE4KXZx5XUAhVHa1AKHT9rDmgQFggdMAE&usg=AFQjCNEcL7w0MpY1BLp4p4nmeLezQcOY9w
> then all you need is 2 (or 4) of these 

 Good. Dual is nice, but then aren't 8 required?  Direct and
 combine, any part of four inputs to any part of four outputs.


-- 
 Thanks,
    - Win

Thread

Quad Potentiometer - Does such a thing exist? oldschool@tubes.com - 2017-05-29 03:51 -0400
  Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-29 09:23 +0000
  Re: Quad Potentiometer - Does such a thing exist? gray_wolf <g_wolf@nospam.com> - 2017-05-29 04:28 -0500
    Re: Quad Potentiometer - Does such a thing exist? tabbypurr@gmail.com - 2017-05-29 02:58 -0700
  Re: Quad Potentiometer - Does such a thing exist? "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-05-29 05:54 -0500
  Quad Potentiometer - Does such a thing exist? Anthony Stewart <tony.sunnysky@gmail.com> - 2017-05-29 07:38 -0700
  Re: Quad Potentiometer - Does such a thing exist? Winfield Hill <hill@rowland.harvard.edu> - 2017-05-29 08:42 -0700
    Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-29 16:55 +0000
      Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-29 17:18 +0000
        Re: Quad Potentiometer - Does such a thing exist? speff <spehro@gmail.com> - 2017-05-29 10:31 -0700
          Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-29 18:17 +0000
          Re: Quad Potentiometer - Does such a thing exist? krw@notreal.com - 2017-05-29 14:29 -0400
      Re: Quad Potentiometer - Does such a thing exist? Winfield Hill <hill@rowland.harvard.edu> - 2017-05-29 10:29 -0700
        Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-29 18:10 +0000
          Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-31 11:46 +0000
          Re: Quad Potentiometer - Does such a thing exist? Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-05-31 14:29 +0000
  Re: Quad Potentiometer - Does such a thing exist? Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2017-05-29 23:45 +0200

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