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make 0.5hz cps the default (#931)

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* 0.5 default cps

* 1 -> 0.5 cps defaults

* start moving examples to 2Hz

* more 2Hz doc edits

* small tweaks

* format

* adapt cycles page

* adapt pitch page

* tonal page

* accumulation

* synth page

* adapt conditional-modifiers

* audio effects page

* adapt signals doc

* fix: errors for signals

* adapt signals page

* start time modifiers

* adapt time modifiers

* adapt factories

* hydra + pattern intro

* adapt mini notation page

* start recipes

* adapt recipes page

* use code_v1 table

* delete old dbdump + add new csv based tool

* fix: tests

* fix: cpm

* shuffle featured patterns

* fix: snapshot

---------

Co-authored-by: Felix Roos <flix91@gmail.com>
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Alex McLean 2024-01-22 19:02:34 +00:00 • committed by GitHub
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14
website/src/pages/understand/cycles.mdx
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@ -15,20 +15,20 @@ Strudel's mother language, TidalCycles, even has it in its name.
## Cycles and BPM
In most music software, the unit BPM (beats per minute) is used to set the tempo.
Strudel expresses tempo as CPS (cycles per second), with a default of 1CPS:
Strudel expresses tempo as CPS (cycles per second), with a default of 0.5 CPS:
<MiniRepl client:visible tune={`s("bd")`} />
Here we can hear the 1CPS in action: The kick repeats once per second like a clock.
We could say 1CPS = 1BPS (beats per second) = 60BPM. Let's add another kick:
Here we can hear the 0.5CPS in action: The kick repeats once every two seconds.
Let's make it 4 kicks:
<MiniRepl client:visible tune={`s("bd bd")`} />
<MiniRepl client:visible tune={`s("bd bd bd bd")`} />
Now we have 2 kicks per second, but the whole pattern still plays at 1CPS.
Now we have 4 kicks per cycle, but the whole pattern still plays at 0.5CPS.
In terms of BPM, most musicians would tell you this is playing at 120bpm.
What about this one:
<MiniRepl client:visible tune={`s("bd hh")`} />
<MiniRepl client:visible tune={`s("bd hh bd hh")`} />
Because the second sound is now a hihat, the tempo feels slower again.
This brings us to an important realization:
@ -103,7 +103,7 @@ To get a time signature, just change the number of elements per bar. Here is a r
or with 5:
<MiniRepl client:visible tune={`s("<bd hh hh bd hh hh bd rim bd hh>*5")`} />
<MiniRepl client:visible tune={`s("bd hh hh bd hh hh bd rim bd hh")`} />
We could also write multiple bars with different time signatures:

2
website/src/pages/understand/pitch.mdx
View file

@ -35,7 +35,7 @@ The upper limit decreases with age. What's your upper limit?
In Strudel, we can play frequencies directly with the `freq` control:
<MiniRepl client:visible tune={`freq("200 [300,500] 400 [500,<600 670 712 670>]")`} />
<MiniRepl client:visible tune={`freq("<200 [300,500] 400 [500,<600 670 712 670>]>*8")`} />
## Frequency vs Pitch Perception