[sdiy] Aphex Twin, Korg and 31.250 kHz

[Jason Proctor]

the ES-1 is 32khz IIRC


On Tue, Jul 11, 2017 at 1:53 PM, ezion <ezion67 at gmail.com> wrote:

> Doesn't the Korg ElecTribe S (ES1) use the same sample frequency?
> Think its mostly a pay off between audio bandwidth and the processor power
> available.
> A lower sample frequency means you can do more with a cheaper CPU.
>
> Groetjes Theo
>
> On Tue, Jul 11, 2017 at 10:37 PM, Ove Ridé <nitro2k01 at gmail.com> wrote:
>
>> The Volca Sample, which this concerns, is a 2015 product and still for
>> sale new.
>>
>> On 11 July 2017 at 22:22, MTG <grant at musictechnologiesgroup.com> wrote:
>> > I think the Kawai R100 and other things of that era are either 31.25KHz
>> or
>> > 32KHz.  Pretty sure it's just about storage/cost.
>> >
>> > On 7/11/2017 12:09 PM, Ove Ridé wrote:
>> >>
>> >> http://item.warp.net/interview/aphex-twin-speaks-to-tatsuya-takahashi/
>> >>
>> >> This is an interview with Richard D James (aka Aphex Twin) and Tatsuya
>> >> Takahashi on their collaboration on the Korg Monologue. It's an
>> >> interesting interview in its own right, but one thing that stood out
>> >> to me was this detail about the Volca:
>> >>
>> >> TT: "Talking of standards, the sample rate of 48 kHz is another one
>> >> for sampling and signal processing, but the volca sample uses a weird
>> >> one at 31.25 kHz. Purely because of technical constraints, but I was
>> >> thinking that might be part of the reason you liked it so much,
>> >> because the different sample rate gives it a unique sound."
>> >>
>> >> I immediately recognized that as the baud rate of standard MIDI, which
>> >> in turn is chosen because it is 1/32 MHz so it's easy to derive
>> >> exactly from integer MHz clocks. But the interesting part is why he
>> >> would choose that as a sample rate. I'm assuming the technical
>> >> limitation he's referring to is choosing a sample rate based on a
>> >> clock crystal suitable for MIDI use. But using 48 kHz (at least as far
>> >> as math goes) should have been easy, by using a clock that's a
>> >> multiple of 6 MHz, which would make 48 kHz an integer division.
>> >>
>> >> Just my thought of the day.
>> >>
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>>
>>
>> --
>> /Ove
>>
>> Blog: <http://blog.gg8.se/>
>>
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>>
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