[sdiy] Filter cut off DAC

cheater00 cheater00 cheater00 at gmail.com
Tue May 22 06:19:45 CEST 2018


Unless for the same price you get a really good and stable 12 bit DAC,
or a pretty crappy 16 bit DAC.

On Tue, May 22, 2018 at 4:56 AM,  <rsdio at audiobanshee.com> wrote:
> Prophet 5 Rev 2: 7-bit … not enough (really disappointing steps when turning CUTOFF)
> Prophet 5 Rev 3: 16-bit … why not?
>
> Personally, I can’t see designing something in 2018 that’s less capable than something from 1981.
>
> I would avoid 24-bit because the DAC technology for 24-bit converters doesn’t exactly produce a DC output. I believe that all of the 24-bit converters have some amount of processing (and latency) on the samples that go through. Plus, there’s the fact that nobody can make an analog circuit with 144 dB of signal to noise performance anyway.
>
> In contrast, you can get 14-bit and 16-bit DAC chips that are direct conversions without the latency or manipulation of processing.
>
> Brian
>
>
> On May 21, 2018, at 7:53 AM, paula at synth.net wrote:
>> Random question,
>>
>> How many bits is "enough" for controlling the filter cut off on a VCF?
>> I would start with say 12, but would 16 be better? or 24?
>> At some point there's a cost trade off.
>>
>> Thoughts?
>
>
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