[sdiy] 20ms delay? analog allpass filter?

[Barry Klein]

How about taking advantage of BT APX LL latency. :-)


> On Feb 10, 2023, at 8:45 AM, Mikko Helin via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> Even with the digital solution you don't need DSP as there are some
> I2S lip sync delays you can control using a simple Arduino
> microcontroller (or RPi Pico), in addition you just need a codec board
> (from Ebay etc.) and that I2S delay like this one (TI's TPA5050):
> https://www.ti.com/lit/ds/symlink/tpa5050.pdf?ts=1675998263024
> 
>> On Thu, Feb 9, 2023 at 3:43 PM René Schmitz <synth at schmitzbits.de> wrote:
>> 
>> 
>> Am 09.02.2023 um 14:18 schrieb Ben Stuyts:
>> 
>> 
>> I guess one can say that in the 1930s Hammond did a mechanical way, because that was doable.
>> 
>> 
>> That just reminded me that I have an old Schaller Rotor Sound which does something similar with a ton of inductors. See attached schematic.
>> 
>> 
>> That looks crazy. It looks they're saturating the cores, and thus varying the delay time of the transmission line magnetically.
>> 
>> 
>> Best,
>> 
>> René
>> 
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