strudel/website/src/pages/workshop/first-effects.mdx
2023-06-09 00:26:40 +02:00

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---
title: First Effects
layout: ../../layouts/MainLayout.astro
---
import { MiniRepl } from '../../docs/MiniRepl';
import QA from '@components/QA';
# First Effects
import Box from '@components/Box.astro';
We have sounds, we have notes, now let's look at effects!
## Some basic effects
**low-pass filter**
<MiniRepl
hideHeader
client:visible
tune={`note("<[c2 c3]*4 [bb1 bb2]*4 [f2 f3]*4 [eb2 eb3]*4>/2")
.sound("sawtooth").lpf(800)`}
/>
<Box>
lpf = **l**ow **p**ass **f**ilter
- Change lpf to 200. Notice how it gets muffled. Think of it as standing in front of the club with the door closed 🚪.
- Now let's open the door... change it to 5000. Notice how it gets brighter ✨🪩
</Box>
**pattern the filter**
<MiniRepl
hideHeader
client:visible
tune={`note("<[c2 c3]*4 [bb1 bb2]*4 [f2 f3]*4 [eb2 eb3]*4>/2")
.sound("sawtooth").lpf("200 1000")`}
/>
<Box>
- Try adding more values
- Notice how the pattern in lpf does not change the overall rhythm
We will learn how to automate with waves later...
</Box>
**vowel**
<MiniRepl
hideHeader
client:visible
tune={`note("<[c3,g3,e4] [bb2,f3,d4] [a2,f3,c4] [bb2,g3,eb4]>/2")
.sound("sawtooth").vowel("<a e i o>/2")`}
/>
**gain**
<MiniRepl
hideHeader
client:visible
tune={`stack(
sound("hh*8").gain("[.25 1]*2"),
sound("bd*2,~ sd:1")
) `}
punchcard
/>
<Box>
Rhythm is all about dynamics!
- Remove `.gain(...)` and notice how flat it sounds.
- Bring it back by undoing (ctrl+z)
</Box>
**stacks within stacks**
Let's combine all of the above into a little tune:
<MiniRepl
hideHeader
client:visible
tune={`stack(
stack(
sound("hh*8").gain("[.25 1]*2"),
sound("bd*2,~ sd:1")
),
note("<[c2 c3]*4 [bb1 bb2]*4 [f2 f3]*4 [eb2 eb3]*4>/2")
.sound("sawtooth").lpf("200 1000"),
note("<[c3,g3,e4] [bb2,f3,d4] [a2,f3,c4] [bb2,g3,eb4]>/2")
.sound("sawtooth").vowel("<a e i o>/2")
) `}
/>
<Box>
Try to identify the individual parts of the stacks, pay attention to where the commas are.
The 3 parts (drums, bassline, chords) are exactly as earlier, just stacked together, separated by comma.
</Box>
**shape the sound with an adsr envelope**
<MiniRepl
hideHeader
client:visible
tune={`note("<c3 bb2 f3 eb3>")
.sound("sawtooth").lpf(600)
.attack(.1)
.decay(.1)
.sustain(.25)
.release(.2)`}
/>
<Box>
Try to find out what the numbers do.. Compare the following
- attack: `.5` vs `0`
- decay: `.5` vs `0`
- sustain: `1` vs `.25` vs `0`
- release: `0` vs `.5` vs `1`
Can you guess what they do?
</Box>
<QA q="Click to see solution" client:visible>
- attack: time it takes to fade in
- decay: time it takes to fade to sustain
- sustain: level after decay
- release: time it takes to fade out after note is finished
![ADSR](https://upload.wikimedia.org/wikipedia/commons/thumb/e/ea/ADSR_parameter.svg/1920px-ADSR_parameter.svg.png)
</QA>
**adsr short notation**
<MiniRepl
hideHeader
client:visible
tune={`note("<c3 bb2 f3 eb3>")
.sound("sawtooth").lpf(600)
.adsr(".1:.1:.5:.2")
`}
/>
**delay**
<MiniRepl
hideHeader
client:visible
tune={`stack(
note("~ [<[d3,a3,f4]!2 [d3,bb3,g4]!2> ~]")
.sound("gm_electric_guitar_muted"),
sound("<bd rim>").bank("RolandTR707")
).delay(".5")`}
/>
<Box>
Try some `delay` values between 0 and 1. Btw, `.5` is short for `0.5`
What happens if you use `.delay(".8:.125")` ? Can you guess what the second number does?
What happens if you use `.delay(".8:.06:.8")` ? Can you guess what the third number does?
</Box>
<QA q="Lösung anzeigen" client:visible>
`delay("a:b:c")`:
- a: delay volume
- b: delay time
- c: feedback (smaller number = quicker fade)
</QA>
**room aka reverb**
<MiniRepl
hideHeader
client:visible
tune={`n("<4 [3@3 4] [<2 0> ~@16] ~>/2")
.scale("D4:minor").sound("gm_accordion:2")
.room(2)`}
/>
<Box>
Try different values!
Add a delay too!
</Box>
**little dub tune**
<MiniRepl
hideHeader
client:visible
tune={`stack(
note("~ [<[d3,a3,f4]!2 [d3,bb3,g4]!2> ~]")
.sound("gm_electric_guitar_muted").delay(.5),
sound("<bd rim>").bank("RolandTR707").delay(.5),
n("<4 [3@3 4] [<2 0> ~@16] ~>/2")
.scale("D4:minor").sound("gm_accordion:2")
.room(2).gain(.5)
)`}
/>
Let's add a bass to make this complete:
<MiniRepl
hideHeader
client:visible
tune={`stack(
note("~ [<[d3,a3,f4]!2 [d3,bb3,g4]!2> ~]")
.sound("gm_electric_guitar_muted").delay(.5),
sound("<bd rim>").bank("RolandTR707").delay(.5),
n("<4 [3@3 4] [<2 0> ~@16] ~>/2")
.scale("D4:minor").sound("gm_accordion:2")
.room(2).gain(.4),
n("<0 [~ 0] 4 [3 2] [0 ~] [0 ~] <0 2> ~>*2")
.scale("D2:minor")
.sound("sawtooth,triangle").lpf(800)
)`}
/>
<Box>
Try adding `.hush()` at the end of one of the patterns in the stack...
</Box>
**pan**
<MiniRepl
hideHeader
client:visible
tune={`sound("numbers:1 numbers:2 numbers:3 numbers:4")
.pan("0 0.3 .6 1")
.slow(2)`}
/>
**speed**
<MiniRepl hideHeader client:visible tune={`sound("bd rim").speed("<1 2 -1 -2>").room(.2)`} />
**fast and slow**
We can use `fast` and `slow` to change the tempo of a pattern outside of Mini-Notation:
<MiniRepl hideHeader client:visible tune={`sound("bd*2,~ rim").slow(2)`} />
<Box>
Change the `slow` value. Try replacing it with `fast`.
What happens if you use a pattern like `.fast("<1 [2 4]>")`?
</Box>
By the way, inside Mini-Notation, `fast` is `*` and `slow` is `/`.
<MiniRepl hideHeader client:visible tune={`sound("[bd*2,~ rim]*<1 [2 4]>")`} />
## automation with signals
Instead of changing values stepwise, we can also control them with signals:
<MiniRepl hideHeader client:visible tune={`sound("hh*16").gain(sine)`} punchcard punchcardLabels={false} />
<Box>
The basic waveforms for signals are `sine`, `saw`, `square`, `tri` 🌊
Try also random signals `rand` and `perlin`!
The gain is visualized as transparency in the pianoroll.
</Box>
**setting a range**
By default, waves oscillate between 0 to 1. We can change that with `range`:
<MiniRepl hideHeader client:visible tune={`sound("hh*8").lpf(saw.range(500, 2000))`} />
<Box>
What happens if you flip the range values?
</Box>
We can change the automation speed with slow / fast:
<MiniRepl
hideHeader
client:visible
tune={`note("<[c2 c3]*4 [bb1 bb2]*4 [f2 f3]*4 [eb2 eb3]*4>/2")
.sound("sawtooth")
.lpf(sine.range(100, 2000).slow(8))`}
/>
<Box>
The whole automation will now take 8 cycles to repeat.
</Box>
## Recap
| name | example |
| ----- | -------------------------------------------------------------------------------------------------- |
| lpf | <MiniRepl hideHeader client:visible tune={`note("c2 c3").s("sawtooth").lpf("<400 2000>")`} /> |
| vowel | <MiniRepl hideHeader client:visible tune={`note("c3 eb3 g3").s("sawtooth").vowel("<a e i o>")`} /> |
| gain | <MiniRepl hideHeader client:visible tune={`s("hh*8").gain("[.25 1]*2")`} /> |
| delay | <MiniRepl hideHeader client:visible tune={`s("bd rim").delay(.5)`} /> |
| room | <MiniRepl hideHeader client:visible tune={`s("bd rim").room(.5)`} /> |
| pan | <MiniRepl hideHeader client:visible tune={`s("bd rim").pan("0 1")`} /> |
| speed | <MiniRepl hideHeader client:visible tune={`s("bd rim").speed("<1 2 -1 -2>")`} /> |
| range | <MiniRepl hideHeader client:visible tune={`s("hh*16").lpf(saw.range(200,4000))`} /> |
Let us now take a look at some of Tidal's typical [pattern effects](/de/workshop/pattern-effects).