ComfyUI Node
Siren Compare (Audio) 🧜
A page for comparing takes BY EAR. Every track is decoded into one Web Audio clock, so they play in perfect sync and soloing between them mid-phrase is instant and silent. Click a scope to seek, shift-drag to loop a bar, 'match level' trims them to equal RMS so the louder one doesn't simply win, 'blind' hides the names AND shuffles the takes — switch it off and the order stays put while the names appear, so you see which one you picked. The spectrograms ship as DATA, so colours, dB window, channel and A/B diff are all live on the page — no re-running to change the view. Measurements, Settings and Notes tabs each have a 'differences only' mode, and the lyrics sit in a side panel. Writes a portable folder that opens offline.
Siren Compare (Audio) 🧜
- audios
- settings_data
- html_path
- url
◄titleSiren comparison►
◄filename_prefixsiren_compare►
◄audio_formatFLAC (lossless)►
◄scope_columns0►
◄auto_collecttrue►
◄self_containedfalse►
◄bpm0►
◄beats_per_bar4►
◄n_fft2048►
◄n_mels192►
◄labels—►
◄notes—►
◄times—►
◄lyrics—►
◄output_dir►
CategoryKinburg-Nodes/Bestiary/Siren
Inputs (17)
| Name | Type | Default | Description |
|---|---|---|---|
| audios | AUDIO | The takes to compare. Wire a 'Get Accumulator (audio)' here and drop a 'Set Accumulator (audio)' on each branch — same idiom as Image Compare, and the Collect button wires them in index order. A single AUDIO works too. | |
| title | STRING | Siren comparison | — |
| filename_prefix | STRING | siren_compare | — |
| audio_format | COMBO | FLAC (lossless) | How the takes are written into the bundle. FLAC is the default and should stay the default: you are comparing fine detail, and a lossy codec would add differences of its own on top of the ones you are trying to hear. MP3/Opus only to make a bundle small enough to send someone. |
| scope_columns | INT | 00–12000 | Time resolution of the shipped spectrogram data, in columns. 0 = auto, which is what you want. Auto gives 25 columns per second — one per AceStep latent frame, 40 ms — clamped to 1200…6000. That is finer than the screen so there is real detail to find when you zoom in, without making the bundle silly: a 3-minute track comes to about 1.6 MB. This is the only scope setting that has to be decided here, because changing it means recomputing the spectrogram. Colours, dB window, mode, channel, zoom and the diff are all live on the page. |
| auto_collect | BOOLEAN | true | Re-wire every Get Accumulator in the graph automatically, right before the workflow is queued — so a Set you just added, removed, muted or bypassed is picked up without a click. Off: only the '🔌 Collect All' button collects. (Purely an editor convenience; the backend ignores this value.) |
| self_contained | BOOLEAN | false | How the comparison is saved. OFF (default): a portable FOLDER — a light index.html plus audio/ and scopes/ with relative links. Small, quick to write, and what you want for opening it in-app. ON: ONE .html with every take and every spectrogram inlined as a data: URI. Bigger (base64 adds a third), but it is the only version that works when somebody OPENS IT STRAIGHT OFF DISK — a browser refuses to fetch local media from a file:// page, so a zipped folder plays nothing and draws nothing. Turn this on to send a comparison to someone, and pick MP3 or Opus first unless the point is lossless: a 3-minute FLAC take inlines to about 40 MB. |
| bpm | INT | 00–300 | Starting value for the page's bar/beat grid — you can change it there without re-running. 0 = a plain time ruler. |
| beats_per_bar | INT | 41–16 | — |
| n_fft | INT | 2048256–16384 | FFT window for the shipped spectrogram data. Larger = finer frequency detail, blurrier timing. |
| n_mels | INT | 19216–1024 | Mel bands in the shipped data. 192 is the most that stays fully populated at n_fft 2048 — ask for 256 and two bands come out empty, i.e. dead rows in the picture. |
| labelsopt | STRING | One label per line, in track order — wire a 'Get Accumulator (captions)', which already joins with newlines. Missing labels become 'Take N'. | |
| notesopt | STRING | Free text shown per track: a Siren report, a Generation Info dump, your own remarks. Takes either convention — blocks split by a '---' line (Get Accumulator (prompts)) or one line per track (captions). A single paragraph is shared by every take. | |
| timesopt | STRING | Generation time per take, ONE LINE EACH in track order — wire Siren (Music Sampler)'s 'time' output through a Set/Get Accumulator (texts) with a newline separator, exactly as Image Compare takes its times. Shown next to each take's name and in the Measurements tab, where a 'vs fastest' row turns it into the question you actually have: what did the extra stage cost. '12.34 s', '1m 30s', '890 ms' and '00:01:30' all parse. | |
| lyricsopt | STRING | Song lyrics for the page's side panel. ONE block (no '---') = the same words for every take, which is the usual case when you are comparing settings. Split it with '---' lines when the takes were sung from different lyrics. | |
| settings_dataopt | GEN_SETTINGS | Structured per-take settings from Generation Info Filter's 'settings_data' — the same output Image Compare takes. Becomes the page's Settings tab, with a 'differences only' view that shows exactly which setting moved between takes. | |
| output_diropt | STRING | Where the bundle folder is written. Empty = the ComfyUI output folder. |
Outputs (2)
| Name | Type | Description |
|---|---|---|
| html_path | STRING | — |
| url | STRING | — |