Hi all
Am 01.10.2018 um 09:21 schrieb Frank Sheeran:
current = previous * multiplier + delta
Am 01.10.2018 um 09:21 schrieb Frank Sheeran:
> current = previous * multiplier + delta
Im a using this multiplication with offset to sequentially generate and
detune the frequencies for music
On Mon, Oct 1, 2018 at 1:58 PM Frank Sheeran wrote:
[...]
>
> Please take a look at my soft synth if you're bored. I think there's
> nothing like it except Csound and Max/MSP/PureData, but I think
> my language is the easiest to read and write for more complicated
> patches.
On 01-Oct-18 13:58, Frank Sheeran wrote:
For curves other than 0 and 1, I discover a delta that will work to the
exact number of samples iteratively because I am too stupid to figure
out an equation for delta. Werner is much better at math than I am!
This is quite a smart way to work
On 01-Oct-18 14:12, Vadim Zavalishin wrote:
In principle IIRC the same rule applies for
multiplier < 1, but there the losses are not too large. This also
manifests at multiplier = 1 by having the "best offset" so that the
curve's middle is at zero.
Sorry, I meant to say that for
On 01-Oct-18 13:52, Frank Sheeran wrote:
Indeed, that's a simple parametric, but for generating envelopes we have
the freedom to depend on the previous sample's output. So, while an
exponential curve parametric-style requires a pow(), the iterative
solution is simply current = previous *
> The math behind it looks a bit complicated but for very long (envelope)
phases you might need to update the current value manually because floating
errors will add up
Sali Andre,
I thought this would be a problem, but for exponential curves up to 5
seconds, ranging from 2^(1/12) start to 1
>
> A very simple parametric curve is
> y = (1 - x) / (1 + a*x)
> With a = 0, you get a line thru 0,1 and 1,0
> With increasing a, you bend the line to almost a sharp angle.
Hello Stefan.
Indeed, that's a simple parametric, but for generating envelopes we have
the freedom to depend on the
Hi Frank,
the solution Werner solved is working the same way. The multiplier and delta
gets computed once when receiving all necessary data. For each sample you then
only have to run one multiplication and one addition plus reassignment. The
math behind it looks a bit complicated but for very
A very simple parametric curve is
y = (1 - x) / (1 + a*x)
With a = 0, you get a line thru 0,1 and 1,0
With increasing a, you bend the line to almost a sharp angle.
Best,
Steffan
> On 01.10.2018|KW40, at 09:21, Frank Sheeran wrote:
>
> Sali Andre,
>
> I'm just now seeing your answer,
Sali Andre,
I'm just now seeing your answer, thanks! It seems a lot more
complicated--but probably far more thorough--an explanation than I have.
The solution I hit upon to generate coefficients "multiplier" and "delta"
for the sample-by-sample calculation
current = previous * multiplier +
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