875c76026a5043c1de08ba0fbcbd042295b5a00a
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Commits
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  adminandClaude Opus 5.5
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f92d69d902 |
Rebuild the Acid node after the acid voice of nodeseq (#421)
The first Acid hardly squelched. Its tanh ate the resonance, and its sweep fell evenly in octaves. The user pointed at the acid tone of nodeseq.com/studio, so the node now follows how that voice is built from Web Audio parts. - The filter is a two-pole 12 dB low-pass with Q in dB up to 17.5, like a BiquadFilterNode. The ladder and its tanh are gone. - One ADSR drives both the volume and the filter. The sweep falls back in Hz, fast from the top and long at the bottom. - Every note glides from the one before. A new note cuts the last one off, and the node plays its release itself. - Knobs: cutoff, reso, env, attack, decay, sustain, release and glide. The defaults are the acid preset of nodeseq. - Accent, slide, drive and tuning are dropped. Old projects were not kept, the user had only placed the node for a try. - A hook __gm.acid.compare renders a line offline through our worklet and through the nodeseq graph, for e2e 34. Found on the way: in Chrome an oscillator that starts inside a render block runs its first samples at 440 Hz. The comparison evens this out. Tests: - tsc, eslint, Prettier clean - Unit: acid.test.ts rewritten with 12 tests. chip-presets and sound-library follow the new node. - e2e 34 on melektaus-atx: ALL PASSED, 148 checks. Against nodeseq the loudness per 10 ms window is at most 0.14 dB apart, and 95 to 97 % of the windows are equally bright. - With a linear Q instead of Q in dB the comparison is red. - Gate on melektaus-atx: green, 306 files, 4752 tests. That is 4754 less the 14 old and plus the 12 new Acid tests. - Not checked: the sound by ear, the master chain of nodeseq, the keyboard and a bake with the new node. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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d844f2734a |
Add an Acid instrument node for TB-303 style bass lines (#421)
The instruments could only come near a 303 with a Chip, a Filter and two envelopes. The biquad filter does not saturate, every note strikes anew, and there was no slide and no accent. - Acid is a new instrument node that plays a saw or a square through a four-pole ladder low-pass with tanh saturation, oversampled twice. Knobs: cutoff, resonance, env mod, decay, accent, tuning and slide time. - An accent comes from the velocity, from 0.9 on. It is louder, opens the filter further with a shorter decay, and accents close behind each other build up. - Two notes that touch or overlap slide. Each note stays a voice of its own, so the scheduler is unchanged. The notes of a line share one synth in the worklet, and the new voice takes it over from its first sample on. - The node sets its own volume, so it needs no envelope behind it. - The graph shows it as a device with the filter curve at rest and at the top of the sweep. - A preset Acid Bass puts an Acid in front of a short echo. Tests: - tsc, eslint, Prettier clean - Unit: 14 new tests in acid.test.ts for pitch, low-pass, resonance, sweep, accent, slide and the handover between two voices. - e2e 34 on melektaus-atx: ALL PASSED, 148 checks (3 new). The handover sits on sample 4800 and jumps by 0.0012, of three notes only the second slides. - Without the handover, or with a slide that strikes anew, the unit tests are red. - Gate on melektaus-atx: tsc, eslint, Prettier clean, 4753 of 4754 tests green. The red one was sound-library.test.ts, which did not know the new slid count in the stats. Fixed, and the file alone is green again with 128 tests. No second full gate. - Not checked: the sound by ear, slide at the keyboard, a bake with Acid, the CPU load of many notes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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c087993000 |
Edit a Filter in its node and resize EQ and Filter nodes (#385)
A Filter sounds like one band of the Parametric EQ, but it keeps what the EQ cannot: linked numbers, the all-pass and +-40 dB. So it stays a node of its own and gets the EQ's editor with itself as the one band. The editors also stop running out of their room: what does not fit is left out instead of being cut. - The curve of the EQ is now BandCurve with a host the EQ and the Filter both fill. CurvePanel holds what their panels share. - FilterPanel shows the Filter as one band. A drag of its handle sets frequency and gain as one undo step. A number fed by a link is greyed out and the drag leaves it alone. - A double-click on the Filter's title opens the same in a tab of its own. Delete there does nothing, the node stays. - The Filter is tapped like the EQ, so its node and its tab draw the spectrum of what passes it. A tap is two gain nodes per voice, the analysers are made only while someone listens. - EqFace and FilterFace are one CurveFace now, given the panel. - EQ and Filter nodes have a corner to resize them, drawn like the floating window's. The size is saved on the node as `size`, each drag is one undo step, the least is 240 x 120. - In the node the help line is gone. The row of numbers comes in only once the curve keeps 120 px of height. A group of the row that does not fit is not drawn, the one on the right first. - A frequency or dB label that would run into the one before it is left out. - The all-pass is drawn flat. The curve's maths takes every shape a Filter has. Found on the way: - The instrument presets set nodes 240 apart. A Filter with its editor is about 700 wide and covered the Bitcrusher, so a Filter now takes four columns. Tests: - Unit: 8 new (filter band, resize command and save, fitting rules), stage lists with a Filter now hold its taps - e2e 34 (atx): ALL PASSED, 130 checks (4 new) - Gate (atx): CHECK EXIT 0, 284 files, 4367 tests Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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e1ca6a5f5a |
Shape a sound with every filter type, a Q and a slope (#318)
The Filter node from #335 only knew low-pass, high-pass and band-pass and had a Resonance from 0 to 1. It now has every type Web Audio offers, a Q as a plain factor and a slope up to 48 dB per octave. - Types: low-pass, high-pass, band-pass, notch, low shelf, high shelf, peaking and all-pass. The cutoff row is now labelled Frequency, its key stays `cutoff`. - Q from 0.1 to 30, 0.707 by default, replaces Resonance. Web Audio takes the Q of a low- or high-pass in dB, so it is converted when the voice is wired. No project used the node. - Gain in dB is an input only for the shelves and the peak. It is a derived port, so the sound FX compiler now resolves derived ports. - Slope 12, 24 or 48 dB/oct runs 1, 2 or 4 filters in a row. They share one cutoff carried by a ConstantSource, only the last has the Q. Shelves, peak and all-pass hide the row. - The Chip Presets get the Q their resonance gave before. Mutate moves Q in octaves and gain by up to a dB. - bindStage in the instrument compiler binds every amount of a stage generically, so new stages need no case of their own there. Finding: FLAT_Q was in dB and the delay damping used it. It is a factor now, the damping takes it through passQ and is unchanged. Tests: - Unit envelope 13, sound-library 96 (2 new), chip-presets 14, soundfx 45, all green. - Counter-checks: the Q on every filter in a row, the gain row for every type. Each turns one test red. - e2e 34 (melektaus-atx): ALL PASSED, 76 checks (1 new). Chrome offline, 2 kHz through a low-pass at 1 kHz: -12.37 dB at 12 dB/oct, -49.5 dB at 48. A +6 dB peak gives 6.00 dB, a notch -124 dB. - The gate runs once on the last commit of this series. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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01fd6e6464 |
Swirl and comb a sound with a Phaser and a Flanger node (#341)
sfxr's "phaser" is a comb filter, the sound plus a copy delayed by up to 2.9 ms. That is a flanger, not the phaser a guitarist knows. Both effects come in as nodes of their own, so each name fits its sound and sfxr is covered in full. Both run on the FX worklet like the Bitcrusher, because a feedback loop in Web Audio costs a render quantum per round. - Phaser: first-order allpasses (Stages 2, 4, 6, 8, 12) around Frequency, moved by a sine LFO Depth octaves wide at Rate Hz, with Feedback and Mix. An Envelope can move Frequency and Mix. - Flanger: a delay line of Offset ms. Sweep moves it on in ms/s from the start of the voice, an LFO adds up to Depth ms. As in sfxr the delay is mirrored at 0, and it never goes past 20 ms. Feedback comes back exactly one delay later. An Envelope can move Offset and Mix. - Mix 0 leaves the sound as it is, 1 is half sound and half copy. The notches are deepest there and the peaks stay at the sound's level. sfxr adds both at full, so its sound comes out 6 dB louder. - The Flanger's processor gets the start of its voice and begins the sweep on that sample. stageNodes takes it as a new argument `at`. - Explosion gets a Flanger in one draw out of two, with sfxr's offset and sweep and no LFO. Offset is offset^2 * 2.89 ms, Sweep is ramp^2 * 125 ms/s, signed so the direction holds. - Randomize draws a Flanger's offset and sweep like sfxr. Its LFO and feedback and all of a Phaser are drawn within bounds of their own. Mix and Stages stay, as a Bitcrusher's Mix does. Mutate moves them too, and a 0 stays 0. - New instrument preset Phased Pad: saw, Envelope, low-pass, Phaser of six stages. The other 14 are unchanged. - The Bitcrusher's worklet setup is now shared with both nodes (workletNodes), its behaviour is unchanged. Tests: - Unit phaser (new): 8 green. Counter-check with clamping at 0 instead of mirroring and a flipped allpass coefficient: 3 red. - Unit soundfx, sound-library, chip-presets: 45 / 76 / 14 green. Counter-checks: start time not passed on, phaser frequency eased linearly, sweep sign dropped, Phaser left out of Mutate, each red. - Unit core, viewport, graph: 179 files, 2979 tests green. - e2e 34 (melektaus-atx): ALL PASSED, 70 checks (1 new), first run. Chrome offline: 1 kHz notch RMS 0.0000 with two stages, 0.5657 with four. Flanger echo after 48 samples, swept echo at 533/534. About 47 Phasers (12 stages) or 63 Flangers fill the audio thread. - Gate (melektaus-atx): CHECK EXIT 0, 257 files, 3991 tests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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a2d0a02645 |
Play tunes on 14 instrument presets next to the sfxr sounds (#329)
The Preset menu only had sfxr's effects: each a fixed pitch on every key that dies away by itself. Now its top half holds instruments to play melodies, basses and drums on. - Instruments: Square Lead, Pulse Lead, Echo Lead, Octave Arp, Synth Brass, Detuned Saws, String Pad, Organ, Flute, Bell, Pluck, Triangle Bass, Pluck Bass and Drum Kit. A line in the menu parts them from the seven effects below. - Their Chips follow the note, and all but Bell, Pluck and the drums hold it while the key is held. - They come out the same every time they are picked. Randomize and Mutate make a variant, as before. - They use what the graph already has: two Chips through a Mix for Detuned Saws, String Pad, Organ, Flute and Bell, an Envelope on a Filter's cutoff for Brass, Pluck and Pluck Bass, a Pitch for the detune and the octave, a Delay for Echo Lead and Bell. - Drum Kit uses single notes 36 to 46: kick, snare, closed and open hat on their General MIDI keys, each ending by itself. - A small Sketch helper lays the nodes on a grid. The sfxr presets use it too and come out as before. - Numbers keep to the steps of their rows. Pulse Lead's duty is 0.13, not 0.125, because the field rounds to 0.01. Tests: - Unit chip-presets: 12 green (5 new). Every instrument compiles without a problem, doubles its frequency an octave up, holds unless struck and is the same on every pick. The drum kit sounds on exactly 36, 38, 42 and 46. Countercheck with Follow note forced off: red. - e2e 34 (CI image on stein2, melektaus-atx was off): ALL PASSED, 65 checks (1 new). A first run had the scheduler's looped-bar check red by 10 ticks between two clock reads, which the presets do not touch; the second run was green. - Gate (stein2): CHECK EXIT 0, 256 files, 3974 tests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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adminandClaude Opus 5.5
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f3ae19431a |
Make an 8-bit sound with a Preset, Randomize or Mutate (#329)
A Chip could play a sound, but finding a good one meant typing a dozen numbers. sfxr's buttons do that in one click: a kind of sound drawn anew every time, a wild draw, or a small nudge. The Instrument tab now has the same, and plays the result at once. - Preset menu with Pickup, Laser, Explosion, Powerup, Hit, Jump and Blip. It puts a new graph in place of the instrument's, as one undo step: Notes for all 128 notes, Chip, Envelope, Filter, Bitcrusher, Output. The Chip keeps its own frequency with follow note off, so every key plays the same effect, and sustain 0 ends it by itself. - The presets are sfxr's generators, worked out into Hz, semitones and seconds with sfxr's own formulas, in chipPresets.ts. sfxr's envelope holds and falls in a line, ours falls quick at first. So the decay is three times sfxr's hold and fall. - Randomize draws every number of the Chips, Envelopes, Filters and Bitcrushers anew, as sfxr's randomizer does. Waves, filter types, the Bitcrusher's mix and an Envelope's from and to stay. - Mutate moves each of those numbers a little, one in two. A 0 stays 0, so nothing that was off comes on. - An input fed by an edge is left alone by both. Both are grey while the graph has none of those nodes. - Audition, off by default as in the Pattern tab, plays the note last played again 150 ms after a change to the graph rests. - Preset, Randomize and Mutate always play that note, for up to 2 s. - ReplaceGraphCommand swaps nodes and edges and keeps groups and notes. - The info on the right of the header kept 220 px and was cut off with the four new buttons. 140 px still fit "No sound picked". Not done: punch, filter sweeps and the phaser of sfxr (#341). Tests: - Unit chip-presets (new) 7. Counter-check: a wrong Hz formula and fed inputs not left alone turn 3 of them red. Unit tests of the instrument tab, graph commands and sound FX nodes: 49 files, 851 green. - e2e 34 (melektaus-atx): ALL PASSED, 64 checks (4 new): Preset, Randomize and Mutate, Audition, three undos back to the Sample. - Screenshot with a Laser preset: the header fits at 1280 px, the chain is fitted, the Chip is a saw with its duty grey. - Gate (melektaus-atx): CHECK EXIT 0, 256 files, 3969 tests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |