# Sam Audio · Span Separate API

> Izdvaja zvuk iz audiodatoteke pomoću zadanih vremenskih raspona, uz opcionalnu tekstualnu napomenu

Umjesto oslanjanja samo na tekst, prosljeđujete `spans` koji označavaju kada se ciljni zvuk pojavljuje u `audio_url`-u. `prompt` nije obavezan, ali pomaže prepoznati vrstu zvuka. `trim_to_span` može skratiti izlaz na raspon segmenta, a `use_sound_activity_ranking` omogućuje ponovno rangiranje bez prompta. Vraća zvuk `target` i `residual` u formatu wav ili mp3.

- Model id: `sam-audio/span-separate`
- Made by: Meta
- Category: Audio
- Output: json
- Price per 30 seconds of your input audio: from $0.05 / 30 seconds of input audio (cheapest run $0.05 (50 API credits))
- Run: `POST https://api.doitong.ru/v1/run/sam-audio/span-separate`
- Quote: `POST https://api.doitong.ru/v1/quote/sam-audio/span-separate`
- Docs page: https://doitong.com/hr/developers/models/sam-audio/span-separate

## Pricing

Price: **from $0.05 / 30 seconds of input audio** (the lowest tier; the quote prices your exact input). Price per 30 seconds of your input audio: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

The full example input below costs $0.05 = 50 API credits (1 × 30 s input audio × $0.05).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/sam-audio/span-separate` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `audio_url` | `audio` | string (audio URL) | yes |  |  | URL audio datoteke za obradu. |
| `prompt` |  | string \| null | no |  |  | Pomoć pri identifikaciji zvuka za izdvajanje audija iz raspona. Preporučuje se tekstualni opis zvuka koji treba izolirati, ali nije obavezan. |
| `spans` |  | array of object {start, end, include} | yes |  |  | Vremenski intervali koji sadrže ciljani zvuk za izolaciju. |
| `spans[].start` |  | number | yes |  | ≥ 0 | Početna vremenska oznaka raspona, mjerena u sekundama. |
| `spans[].end` |  | number | yes |  | ≥ 0 | Završna vremenska oznaka raspona, mjerena u sekundama. |
| `spans[].include` |  | boolean | no | `true` |  | Uključivanje zvukova unutar raspona: True ih uključuje, a False isključuje. |
| `reranking_candidates` |  | integer | no | `1` | 1 – 7 | Broj kandidata koji se koristi samo s tekstualnim promptom: generira se i rangira navedeni broj kandidata. Razdvajanje samo prema rasponu zanemaruje ovu postavku. |
| `acceleration` |  | enum (string) | no | `balanced` | `fast`, `balanced`, `quality` | Razina ubrzanja primijenjena na obradu. |
| `max_chunk_duration` |  | number | no | `60` | 10 – 60 | Ograničenje audija po prolazu, mjereno u sekundama, nakon kojeg se obrada koristi preklapajućim isječcima koji se stapaju. |
| `chunk_overlap` |  | number | no | `5` | 0 – 30 | Duljina preklapanja između isječaka, mjerena u sekundama, koja se koristi za križno pretapanje. |
| `use_sound_activity_ranking` |  | boolean | no | `false` |  | Opcija rangiranja aktivnosti zvuka koja zahtijeva reranking_candidates > 1 i omogućuje učinkovito ponovno rangiranje pri razdvajanju samo prema rasponu bez tekstualnog prompta. Kandidati se ocjenjuju prema tome koliko se njihova detektirana područja bez tišine podudaraju s navedenim rasponima. |
| `trim_to_span` |  | boolean | no | `false` |  | Odabir duljine izlaza između samog navedenog raspona i cijelog audija. Uključivanje skraćuje izlaz na vremenski raspon; False zadržava punu duljinu i izolira ciljani zvuk kroz cijeli zapis. |
| `output_format` |  | enum (string) | no | `wav` | `wav`, `mp3` | Format generiranog audiozapisa. |

File parameters (`audio`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "audio": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
  "spans": [
    {
      "end": 10,
      "include": true,
      "start": 6
    }
  ]
}
```

A fuller example:

```json
{
  "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
  "spans": [
    {
      "end": 10,
      "include": true,
      "start": 6
    }
  ]
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/sam-audio/span-separate?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "spans": [
      {
        "end": 10,
        "include": true,
        "start": 6
      }
    ]
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/sam-audio/span-separate?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "spans": [
      {
        "end": 10,
        "include": true,
        "start": 6
      }
    ]
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "spans": [
        {
            "end": 10,
            "include": True,
            "start": 6,
        },
    ],
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/sam-audio/span-separate", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "sam-audio/span-separate",
      "input": {
        "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
        "spans": [
          {
            "end": 10,
            "include": true,
            "start": 6
          }
        ]
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "sam-audio/span-separate",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 50,
    "usd": "0.05",
    "charged": 50,
    "refunded": 0
  },
  "input": {
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
    "spans": [
      {
        "end": 10,
        "include": true,
        "start": 6
      }
    ]
  },
  "output": {
    "target": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200
    },
    "residual": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200
    },
    "duration": 5,
    "sample_rate": 48000
  },
  "outputs": [
    {
      "type": "file",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `target` | object {url, content_type, file_name, file_size} | Ciljani zvuk izdvojen zasebno. |
| `residual` | object {url, content_type, file_name, file_size} | Audio preostao nakon izdvajanja ciljanog zvuka. |
| `duration` | number | Duljina izlaznog audija, mjerena u sekundama. |
| `sample_rate` | integer | Frekvencija uzorkovanja izlaznog audiozapisa u Hz. |

## Related models

- [Sam Audio · Separate](https://doitong.com/developers/models/sam-audio/separate.md) (`sam-audio/separate`): from $0.05 / 30 seconds of input audio
- [Sam Audio · Visual Separate](https://doitong.com/developers/models/sam-audio/visual-separate.md) (`sam-audio/visual-separate`): from $0.05 / 30 seconds of input video
- [MMAudio V2](https://doitong.com/developers/models/mmaudio-v2.md) (`mmaudio-v2`): $0.001 / second
- [Demucs](https://doitong.com/developers/models/demucs.md) (`demucs`): $0.0007 / second of input audio
- [DeepFilterNet 3](https://doitong.com/developers/models/deepfilternet3.md) (`deepfilternet3`): $0.001 / second of input audio
- [ElevenLabs Audio Isolation](https://doitong.com/developers/models/elevenlabs/audio-isolation.md) (`elevenlabs/audio-isolation`): $0.10 / minute of input file
- [Elevenlabs Sound Effects V2](https://doitong.com/developers/models/elevenlabs/sound-effects/v2.md) (`elevenlabs/sound-effects/v2`): $0.002 / second
- [ElevenLabs Voice Changer](https://doitong.com/developers/models/elevenlabs/voice-changer.md) (`elevenlabs/voice-changer`): $0.30 / minute of input audio

## Links

- HTML page: https://doitong.com/developers/models/sam-audio/span-separate
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=sam-audio/span-separate
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/sam-audio/span-separate