Describe the Pan node as a cyan one-knob device (#392)
- Sounds: the Pan row says how the node looks in the graph. - Architecture: KnobPanel names the Pan. - Development: 1967 editor checks. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5 committed
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@@ -430,7 +430,8 @@ src/editor/soundfx/ SoundFxEditor (#311: the graph, a sound to try it on, Pla
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out apart from the drawing), CompressorFace + nodeFaces (#380: the panel as what a
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Compressor node shows in the graph, #381 the EQ's as well), KnobPanel + KnobFace (#384:
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the Gain as an orange plate with one knob, `drawPlate` shared with the Compressor;
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#390 the Pitch in green and the Mix in blue with a lever, each a `KnobDevice`),
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#390 the Pitch in green and the Mix in blue with a lever, #392 the Pan in cyan,
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each a `KnobDevice`),
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ChipPanel + ChipFace + chipView (#386: the Chip of an instrument as a device, its
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wave and its pitch over a note worked out apart from the drawing, the
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Compressor's `Lever` for "follow note"), EnvelopePanel + EnvelopeFace + envelopeView
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@@ -19,7 +19,7 @@ php tests/php/accounts.test.php # the API's accoun
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php tests/php/snapshots.test.php # the snapshot store (#231), the same way
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php tests/php/releases.test.php # the release store (#266), the same way
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php tests/php/files.test.php # uploaded files in a folder per account (#344), the same way
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node tools/seed-e2e.mjs && node tools/e2e.mjs # 1966 editor checks, screenshots in /tmp/gm-e2e-*.png
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node tools/seed-e2e.mjs && node tools/e2e.mjs # 1967 editor checks, screenshots in /tmp/gm-e2e-*.png
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GM_STEPS=20 node tools/e2e.mjs # or 1-12, or 6,20 — a subset while working on one step
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./e2e.sh start [GM_STEPS] # the same run detached, see below
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./e2e.sh status # live progress, or the last run's result
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@@ -434,7 +434,7 @@ response of a Reverb, and as what the Sound FX tab tries out. Its row means noth
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| **Bitcrusher** | Makes the sound rough, like an old console. `bits` rounds it to fewer steps (8 by default), `rate` takes a sample only so many times a second and holds it until the next (8000 Hz by default), `wet` is how much of the crushed sound is heard instead of the sound itself (1 by default). See [below](#bitcrusher). |
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| **Phaser** | Sweeps notches through the sound, the swirl of a phaser pedal. **Stages** (2, 4, 6, 8 or 12, 4 by default) is how many allpass stages it has, every two make one notch. They sit around `frequency` (800 Hz by default), and an LFO moves them `depth` octaves wide (2), `rate` times a second (0.5 Hz). `feedback` (0.4) sharpens the notches, `wet` (1) is how much is heard. See [below](#phaser-and-flanger). |
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| **Flanger** | Blends the sound with a copy a few ms late: the jet sound of a flanger, and what sfxr calls its phaser. `offset` is how late the copy is (1 ms by default), `sweep` moves that on by so many ms a second from the start of the sound (0), an LFO adds up to `depth` ms (2) `rate` times a second (0.25 Hz). `feedback` (0.5) and `wet` (1) as on the Phaser. See [below](#phaser-and-flanger). |
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| **Pan** | Moves the sound left or right: `pan` -1 is all left, 1 all right, 0 (the default) leaves it in the middle. A mono sound is spread on both sides and then moved (each side 0.707 at 0). A stereo sound keeps the side it goes to and the other side moves over into it, as Web Audio's `StereoPannerNode` does: at 1 both sides are heard on the right. In an [instrument](Instruments#envelopes) an Envelope can move it. Measured (e2e 34, Chrome offline): a mono sine at 0.5 came out 0.5 / 0 at -1 and 0.354 / 0.354 at 0, a stereo one at 0.5 came out 0.354 / 0.854. |
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| **Pan** | Moves the sound left or right: `pan` -1 is all left, 1 all right, 0 (the default) leaves it in the middle. A mono sound is spread on both sides and then moved (each side 0.707 at 0). A stereo sound keeps the side it goes to and the other side moves over into it, as Web Audio's `StereoPannerNode` does: at 1 both sides are heard on the right. In an [instrument](Instruments#envelopes) an Envelope can move it. Measured (e2e 34, Chrome offline): a mono sine at 0.5 came out 0.5 / 0 at -1 and 0.354 / 0.354 at 0, a stereo one at 0.5 came out 0.354 / 0.854. In the graph the node is drawn as the Gain's device in cyan (#392), with one knob for `Pan`: the middle stands straight up, the turn goes evenly to *L* and *R* engraved at its ends. A linked `Pan` greys the knob. |
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| **Compressor** | Squeezes the loudness together: what goes above `threshold` (-24 dB by default) comes out only 1/`ratio` (4) as much louder. `knee` (6 dB) eases into it, `attack` (0.003 s) and `release` (0.25 s) say how fast it turns down and lets go. `makeup` (0 dB) raises it afterwards. **Auto-gain** (off) gives back what it takes from a sound at -18 dB, with the makeup on top. The node is drawn as a device with a meter of what it takes away, and a double-click opens a tab with its curve and the level going in and out. See [below](#compressor-and-limiter). |
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| **Limiter** | Keeps every peak below `threshold` (-6 dB): it looks 5 ms ahead, so even a sudden peak never gets through, and comes back up in `release` (0.1 s). **Auto-gain** (on) raises the limited sound to `ceiling` (-1 dB). Nothing ever goes above the ceiling. See [below](#compressor-and-limiter). |
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| **Saturation** | Bends the sound, from warmth to a hard distortion. **Type**: *Soft (tanh)* (the default), *Cubic*, *Hard clip*, *Tube*, *Fuzz*, *Foldback*, *Sine fold* or *Rectify*. `drive` (12 dB) is how hard the sound is pushed into it, `tone` (1) a low-pass after it from 1 kHz (0) to wide open (1). **Auto-gain** (on) keeps the bent sound about as loud as it came in, `output` (0 dB) is added on top. `wet` (1) how much of it is heard instead of the sound itself. See [below](#saturation). |
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