[sdiy] Drum sample playback

[Quincas Moreira]

Hey! So, I got asked by Sparkfun to do a video for the Tsunami, so I went
ahead and made a module with it! It's indeed an awesome little board, check
it out:
https://youtu.be/wulg6GZj6oE
Best
Q



On Sat, Feb 18, 2017 at 12:12 PM, <paula at synth.net> wrote:

> Quincas,
>
>  Would love to help, but at the moment I can't due to legalities.
> If someone does make one, I'd be very interested (depending on spec).
>
> Paula
>
>
> On 2017-02-18 15:13, Quincas Moreira wrote:
>
>> very cool! Let's make a Euro panel for it, who's game?
>>
>> It does another thing that VST/Au cannot...  Function without a host
>> computer :)
>>
>> On Sat, Feb 18, 2017 at 5:46 AM, Matthias Puech
>> <matthias.puech at gmail.com> wrote:
>>
>> Hi,
>>>
>>> Yes, it looks like an interesting little board. What is that
>>> impressive though?
>>> I didn't know about this particular codec, it could be handy in a
>>> module design. Now if I put aside SDIO throughput (which I don't
>>> know much about), it doesn't seem that surprising to be able to read
>>> 32 samples at the same time. We can already achieve 32+ linearly
>>> interpolated voices on an STM32F4 (Cortex-M4 @ 200MHz) at 48kHz, and
>>> the M7 has far better performance (300MHz, better FPU) so there
>>> should be room for better interpolation (or more polyphony). Am I
>>> missing something?
>>>
>>> Best,
>>> -m
>>>
>>> On Fri, Feb 17, 2017 at 11:45 PM, Richie Burnett
>>> <rburnett at richieburnett.co.uk> wrote:
>>>
>>> That's impressive!
>>>>
>>>> It's usually the resampling that takes the majority of CPU cycles
>>>> with sample playback. So for a given amount of CPU power you can
>>>> either have tons of voices that alias like hell when you transpose
>>>> the samples or a quarter of those voices with nice clean detuning
>>>> of the samples. I suspect this is where they might have cut
>>>> corners.
>>>>
>>>> Of course if you want to pitch up a Hi-hat sample and the playback
>>>> module has crap resampling, then there's nothing to stop you
>>>> transposing the sample in a decent audio processing package first
>>>> before sticking it on the sd card.  (That's what I used to do with
>>>> my old Akai S01 sampler that had crappy linear interpolation, and
>>>> turned hi-hat samples into rustling paper bag sounds as soon as
>>>> you touched the transpose control!)
>>>>
>>>> -Richie,
>>>>
>>>> Sent from my Xperia SP on O2
>>>>
>>>> ---- paula at synth.net wrote ----
>>>>
>>>> OMG,
>>>>>
>>>>> anyone seen this?
>>>>>
>>>>> https://www.sparkfun.com/products/13810 [1]
>>>>>
>>>>> upto 32 samples playing back at the same time, built in MIDI, 8
>>>>>
>>>> outputs
>>>>
>>>>> which can dynamically assign. Just WOAH
>>>>>
>>>>> Paula
>>>>> _______________________________________________
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>>>>>
>>>>
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>>
>> --
>> Quincas Moreira
>> Test Pilot at VBrazil Modular
>>
>> Links:
>> ------
>> [1] https://www.sparkfun.com/products/13810
>> [2] http://synth-diy.org/mailman/listinfo/synth-diy
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>


-- 
Quincas Moreira
Test Pilot at VBrazil Modular
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