[sdiy] Drum sample playback

Tony K weplar at gmail.com
Thu Apr 13 21:25:46 CEST 2017


Nice work Quincas. 

You remind me of the old manic me in my younger days *sigh* (wAtch out for Burn Out- and I don't mean the Tsunami board ;)

Correct me if I am wrong, but did you say you "found" that transistor switch circuit ? tsk tsk, What fun is there in that? Pull out a text book and design one,  don't be lazy and pinch one from a schematic. ;) Ah you young whipper-snappers always in a hurry .

Keep up the nice work,

Cheers,

Tony K




> On Apr 13, 2017, at 11:17 AM, Mike HEQX <mike at heqx.com> wrote:
> 
> So freaking cool. It has been on my list for a while. I need to step up my game.
> 
>> On 4/13/2017 2:46 AM, Quincas Moreira wrote:
>> 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
>>>>>>> _______________________________________________
>>>>>>> Synth-diy mailing list
>>>>>>> Synth-diy at synth-diy.org
>>>>>>> http://synth-diy.org/mailman/listinfo/synth-diy [2]
>>>>>> 
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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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