[sdiy] Drum sample playback

[cheater00 cheater00]

That is unfortunately not true. The quality of pitch shifting depends on
the interpolation and resampling algorithm, not the base sampling rate.
With inferior resampling, pitching down will result in major audible
aliasing, sometimes even worse than shifting up. An increased sampling rate
can also in fact produce worse results, sometimes on tge order of how many
times you can divide it by 44.1 kHz. So for simpler resampling algorithms
that are abused, 88.2 kHz will produce aliases of ~twice the power as you
would get if your base sampling rate were 44.1 kHz.

On Sun, 16 Apr 2017 22:01 Quincas Moreira, <quincas at gmail.com> wrote:

> It's 44.1khz, so you can pitch down quite a bit before losing nyquist
> completely. Pitching up will not generate sound quality issues at all.
>
> On Sun, Apr 16, 2017 at 2:30 PM, Tom Wiltshire <tom at electricdruid.net>
> wrote:
>
>> I think that's what R.G.Keen ironically calls "ASMOP" - A Simple Matter
>> Of Programming.
>>
>> If it's got the audio input, then it must be possible in some form or
>> other. Actually making it work may be straightforward or might be a lesson
>> in pain.
>>
>> On 16 Apr 2017, at 18:16, Quincas Moreira <quincas at gmail.com> wrote:
>>
>> The one thing I wish this board could do is actually record. It has a
>> stereo audio input pair, maybe it's a possible firmware hack to get it to
>> sample rather than just play back?
>>
>> Sent from my iPad
>>
>> On Apr 16, 2017, at 10:34 AM, cheater00 cheater00 <cheater00 at gmail.com>
>> wrote:
>>
>> So guys let's talk more about the sampler board
>>
>> That would be nice
>>
>> On Sun, 16 Apr 2017 11:21 David Moylan, <dave at westphila.net> wrote:
>>
>>> I don't think this is quite correct.  Once you get into frequency
>>> dependent circuits (filters) you move into more complex math.
>>> Thankfully, things like Laplace transforms make most of it algebra.
>>> Still, if you understand the basic filter topologies you can accomplish
>>> a lot by playing with circuit values in a simulator.
>>>
>>> On 04/16/2017 11:03 AM, Gordonjcp wrote:
>>> > On Sat, Apr 15, 2017 at 04:10:14PM -0700, Kylee Kennedy wrote:
>>> >> I know this is getting a little off topic from the original idea but
>>> as
>>> >> someone who took the art school route and didn't have to do Math
>>> classes
>>> >> after High School (Pre-Trig/Calculus classes) I feel I lack the Math
>>> part
>>> >> of designing circuits. Which textbooks could people recommend for
>>> going
>>> >> back and learning the basics for EE math work? Would it be all
>>> Algebra or
>>> >> what?
>>> >
>>> > You don't really need any maths to understand electronics, until you
>>> start to get to the sort of things you won't find in synthesizers like
>>> transmission lines.  It's arithmetic all the way.
>>> >
>>> > 90% of electronic design is Ohm's Law, and the rest you can just crib
>>> from the datasheets.
>>> >
>>>
>>> _______________________________________________
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>>>
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>>
>>
>
>
> --
> Quincas Moreira
> Test Pilot at VBrazil Modular
>
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