Waters ChurchandClaude Opus 5
c8b51c6c2f
The spectrogram scrolled by copying the visible canvas onto itself one step along. That canvas already held the frequency labels and gridlines, because they were drawn straight onto it, so every frame smeared them sideways and left a trail. Arrived with the labels in 0.3.0; the gridlines did it too. Only measured pixels belong on a surface that scrolls. The history now lives on its own offscreen canvas that holds nothing but spectrum, and the visible canvas is repainted from scratch each frame — history first, annotations over the top. Nothing drawn as an annotation can reach the scroll buffer by construction, rather than by remembering to clear the right strip. The layout was muddled in the same place and is fixed with it: the gutter used to be reserved along the bottom while the labels were drawn down the left, overlapping the plot. Labels now sit beside the axis they describe — down the left when frequency runs vertically, with room for "12.5k", and along the bottom when it runs horizontally. Verified both orientations by fingerprinting the gutter and the plot two and a half seconds apart: gutter identical, plot changed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
95 lines
2.6 KiB
JSON
95 lines
2.6 KiB
JSON
{
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"id": "spl-meter",
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"name": "SPL Meter",
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"version": "0.4.1",
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"proddash": ">=1.5.0",
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"description": "Calibrated sound level, Leq and RTA from an audio input on this machine",
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"permissions": [
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{
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"kind": "microphone",
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"reason": "Measuring sound level from an audio input on this machine"
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}
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],
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"client": "client.js",
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"server": "server.js",
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"style": "style.css",
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"minSize": {
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"w": 2,
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"h": 1
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},
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"defaultSize": {
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"w": 3,
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"h": 2
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},
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"configGroups": {
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"Input": {
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"toggle": "enabled"
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},
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"Measurement": {
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"columns": 2
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},
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"Calibration": {
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"collapsed": "whenSet",
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"help": "A sound level calibrator fits over the microphone capsule and emits a known level, almost always 94 dB at 1 kHz. Put it on, press Measure beside the channel, and copy the offset it reports into the box. Without this the meter still works, but it reads in dB relative to full scale and every tile says so."
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}
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},
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"configSchema": {
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"enabled": {
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"type": "switch",
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"label": "Sound level measurement",
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"group": "Input",
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"default": false
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},
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"device": {
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"type": "select",
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"label": "Audio device",
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"group": "Input",
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"showWhen": "enabled",
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"default": "",
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"optionsRoute": "/devices"
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},
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"channels": {
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"type": "string",
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"label": "Channels on that device (1-based, comma separated)",
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"group": "Input",
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"showWhen": "enabled",
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"default": "1",
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"help": "One meter per channel — \"1\" for a single measurement mic, \"1,2\" for a stereo pair."
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},
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"weighting": {
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"type": "select",
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"label": "Weighting",
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"group": "Measurement",
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"default": "A",
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"options": [
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{
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"value": "A",
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"label": "A — how loud it sounds"
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},
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{
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"value": "C",
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"label": "C — keeps the low end"
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},
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{
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"value": "Z",
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"label": "Z — no weighting at all"
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}
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]
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},
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"bands": {
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"type": "switch",
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"label": "Spectrum analysis",
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"group": "Measurement",
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"default": true,
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"help": "1/48-octave bands for the RTA and spectrogram tiles, which each fold them to their own banding. Turn it off if you only ever show the number."
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},
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"calibration": {
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"type": "string",
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"label": "Offsets in dB, one per channel",
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"group": "Calibration",
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"default": "",
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"help": "Leave empty and every reading is dB relative to full scale, labelled dBFS so nobody mistakes it for real SPL."
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}
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}
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}
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