HALOWERKMedienwerk
spectrogram image
Takes an audio or video file (up to 24 MB) and returns a spectrogram image: time on the horizontal axis, frequency on the vertical, intensity as colour, with scale and legend. It makes visible what the ear misses — mains hum as a line at 50 or 60 Hz, broadband noise, the cut-off of a phone or low-bitrate recording, and hard edits. Size, colour scheme and linear or logarithmic intensity are selectable. Rendered locally with ffmpeg; returned inline as PNG base64. Nothing leaves this machine..
POST https://medien.halowerk.com/v1/spectrogram-imageEingaben
| Feld | Typ | Pflicht | Beschreibung |
|---|---|---|---|
| source | object | Ja | The recording. Either url or content_base64. |
| width | integer | Nein | |
| height | integer | Nein | |
| color | string | Nein | |
| scale | string | Nein | |
| legend | boolean | Nein |
Vollständiges Eingabeschema anzeigen
{
"type": "object",
"required": [
"source"
],
"additionalProperties": false,
"properties": {
"source": {
"type": "object",
"additionalProperties": false,
"description": "The recording. Either url or content_base64.",
"properties": {
"url": {
"type": "string",
"maxLength": 2048,
"description": "Public http(s) URL of the file."
},
"content_base64": {
"type": "string",
"maxLength": 12000000,
"description": "The file inline, base64. Larger files by url."
},
"filename": {
"type": "string",
"maxLength": 260
}
}
},
"width": {
"type": "integer",
"minimum": 200,
"maximum": 4000,
"default": 1200
},
"height": {
"type": "integer",
"minimum": 100,
"maximum": 2000,
"default": 512
},
"color": {
"type": "string",
"enum": [
"intensity",
"rainbow",
"magma",
"viridis",
"cool",
"fiery",
"channel"
],
"default": "magma"
},
"scale": {
"type": "string",
"enum": [
"log",
"lin",
"sqrt",
"cbrt"
],
"default": "log"
},
"legend": {
"type": "boolean",
"default": true
}
}
}Ergebnis & Dokumentation
Maschinenlesbare Dokumentation dieses Hubs
Quelle dieser Seite: der veröffentlichte HALOWERK-Katalog. Stand: 2026-11-01, 15:19 UTC.
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