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Re: Quad Potentiometer - Does such a thing exist?

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On a sunny day (29 May 2017 10:29:04 -0700) it happened Winfield Hill
<hill@rowland.harvard.edu> wrote in <oghlp001f08@drn.newsguy.com>:

>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=0ahUKEwiE4KXZx5XUAhVHa1AKHT9rDmgQFggd
>>MAE&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.

I dunno, each chip  has 4 left and 4 right inputs, 
and 4 independent attenuators.
It seems to me tha tsomewhere in the 'round' rotation all you need
to do is switch inputs? (at 180 degrees?)

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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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