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* docs: fix CPU image tag (latest, not latest-cpu) Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: use canonical localai/localai registry in models guide Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: replace dead llama-stable backend with llama-cpp Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: correct mitm-proxy intercept config and redaction tier Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: fix text-to-audio endpoint and broken notice block Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: fix VAD example, stale FAQ, broken link, CLI list, whats-new dump Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: render advanced/reference section indexes (consolidate _index) Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: remove duplicate getting-started build/kubernetes pages Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: fold container image reference into installation/containers Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: remove stale advanced fine-tuning page (superseded by features/fine-tuning) Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: fold distribution/longcat/sound pages into their parents Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: make getting-started index accurate and complete Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: carry one concrete model through the getting-started path Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: add end-to-end 'build your first agent' walkthrough Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: add runtime errors reference; consolidate troubleshooting from FAQ Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: add agent actions catalog Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: agent-scoped MCP, skills walkthrough, agentic disambiguation Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: add concrete gallery install lines to media feature pages Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: merge installation into getting-started (URLs preserved via aliases) Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: add Operations section; move operator pages and P2P API reference Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: journey-ordered top nav and grouped feature sections Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: add docs-with-code process gate (PR template + agent instructions) Signed-off-by: Ettore Di Giacinto <mudler@localai.io> * docs: remove em/en dashes from documentation prose Signed-off-by: Ettore Di Giacinto <mudler@localai.io> --------- Signed-off-by: Ettore Di Giacinto <mudler@localai.io> Co-authored-by: Ettore Di Giacinto <mudler@localai.io>
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+++ disableToc = false title = "Sound Classification" weight = 32 url = "/features/audio-classification/" +++
Sound-event classification (audio tagging) answers the question "what am I hearing?" - given an audio clip, it returns a list of scored AudioSet labels (e.g. Baby cry, infant cry, Glass breaking, Dog bark, Alarm).
LocalAI exposes this through the /v1/audio/classification endpoint, modelled after /v1/audio/transcriptions. The reference backend is ced.cpp (CED, a 527-class AudioSet tagger), a small ViT over a log-mel spectrogram ported to ggml with full PyTorch parity. Apache-2.0 weights are redistributable as GGUF.
Because classification is exposed as a regular OpenAI-style endpoint, any HTTP client works - there is no Python dependency on the consumer side.
Endpoint
POST /v1/audio/classification
Content-Type: multipart/form-data
| Field | Type | Description |
|---|---|---|
file |
file (required) | audio file in any format ffmpeg accepts |
model |
string (required) | name of the sound-classification-capable model (e.g. ced-base-f16) |
top_k |
int | number of top tags to return (0 = backend default) |
threshold |
float | drop tags scoring below this value |
Response
{
"model": "ced-base-f16",
"detections": [
{"index": 23, "label": "Baby cry, infant cry", "score": 0.87},
{"index": 22, "label": "Crying, sobbing", "score": 0.41}
]
}
Detections are returned in score-descending order. Scores are per-class probabilities (multi-label, independent), so they do not sum to 1.
Example
First install a classification model from the gallery (the example below uses ced-base-f16):
local-ai run ced-base-f16
curl http://localhost:8080/v1/audio/classification \
-H "Content-Type: multipart/form-data" \
-F file="@/path/to/clip.wav" \
-F model="ced-base-f16" \
-F top_k=10
See also
- [Audio to Text]({{% relref "audio-to-text" %}}) - speech transcription
- [Speaker Diarization]({{% relref "audio-diarization" %}}) - who spoke when