# Sam Audio · Span Separate API

> আপনার দেওয়া সময়সীমা ব্যবহার করে অডিও থেকে একটি শব্দ আলাদা করে, ঐচ্ছিক টেক্সট ইঙ্গিতসহ

শুধু টেক্সটের ওপর নির্ভর না করে, `audio_url`-এ টার্গেট শব্দটি কখন ঘটে তা চিহ্নিত করে `spans` পাঠান। `prompt` ঐচ্ছিক, তবে শব্দের ধরন শনাক্ত করতে সহায়ক। `trim_to_span` আউটপুটকে span পরিসরে কাটতে পারে, আর `use_sound_activity_ranking` প্রম্পট ছাড়াই পুনঃর‍্যাঙ্কিংয়ের অনুমতি দেয়। wav বা mp3-তে `target` ও `residual` অডিও ফেরত দেয়।

- 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.com/v1/run/sam-audio/span-separate`
- Quote: `POST https://api.doitong.com/v1/quote/sam-audio/span-separate`
- Docs page: https://doitong.com/bn/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.com/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 |  |  | প্রসেসিংয়ের জন্য অডিও ফাইলের URL। |
| `prompt` |  | string \| null | no |  |  | span থেকে অডিও বের করার জন্য sound-identification সহায়তা। যে শব্দটি আলাদা করতে হবে তার টেক্সট বর্ণনা দেওয়া সুপারিশ করা হয়, তবে তা বাধ্যতামূলক নয়। |
| `spans` |  | array of object {start, end, include} | yes |  |  | আলাদা করার লক্ষ্য শব্দ থাকা time interval। |
| `spans[].start` |  | number | yes |  | ≥ 0 | span শুরুর timestamp, সেকেন্ডে পরিমাপ করা হয়। |
| `spans[].end` |  | number | yes |  | ≥ 0 | span শেষের timestamp, সেকেন্ডে পরিমাপ করা হয়। |
| `spans[].include` |  | boolean | no | `true` |  | span-এর মধ্যে থাকা শব্দ অন্তর্ভুক্তি: True হলে সেগুলো অন্তর্ভুক্ত হয়, আর False হলে বাদ দেওয়া হয়। |
| `reranking_candidates` |  | integer | no | `1` | 1 – 7 | শুধু text প্রম্পট-এর সঙ্গে ব্যবহৃত candidate-এর সংখ্যা: ওই সংখ্যক candidate জেনারেট ও র‍্যাঙ্ক করা হয়। Span-only separation এই সেটিং উপেক্ষা করে। |
| `acceleration` |  | enum (string) | no | `balanced` | `fast`, `balanced`, `quality` | প্রসেসিংয়ে প্রয়োগ করা ত্বরণ স্তর। |
| `max_chunk_duration` |  | number | no | `60` | 10 – 60 | প্রতি pass-এ অডিওর সীমা, সেকেন্ডে পরিমাপ করা হয়; এর বেশি হলে processing-এ overlapping chunk ব্যবহার করে সেগুলো একসঙ্গে blend করা হয়। |
| `chunk_overlap` |  | number | no | `5` | 0 – 30 | chunk-গুলোর overlap-এর দৈর্ঘ্য, সেকেন্ডে পরিমাপ করা হয় এবং crossfade blending-এর জন্য ব্যবহৃত হয়। |
| `use_sound_activity_ranking` |  | boolean | no | `false` |  | Sound-activity ranking-এর বিকল্প, যার জন্য reranking_candidates > 1 প্রয়োজন; এটি text প্রম্পট ছাড়াই span-only separation-এর কার্যকর reranking সক্রিয় করে। সরবরাহ করা span-এর সঙ্গে শনাক্ত nonsilent region কতটা মেলে তার ভিত্তিতে candidate-এর score নির্ধারণ করা হয়। |
| `trim_to_span` |  | boolean | no | `false` |  | নির্দিষ্ট span একাই নাকি সম্পূর্ণ অডিও—এই দুইয়ের মধ্যে আউটপুট দৈর্ঘ্য নির্বাচন। সক্রিয় করলে span-এর time range অনুযায়ী trim করা হয়; False হলে সম্পূর্ণ দৈর্ঘ্য বজায় রেখে পুরো অডিওজুড়ে লক্ষ্য শব্দ আলাদা করা হয়। |
| `output_format` |  | enum (string) | no | `wav` | `wav`, `mp3` | জেনারেট করা অডিওর ফরম্যাট। |

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.com/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.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.com/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.com/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.com/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.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `target` | object {url, content_type, file_name, file_size} | আলাদা করে বের করা লক্ষ্য শব্দ। |
| `residual` | object {url, content_type, file_name, file_size} | লক্ষ্য শব্দ বাদে অবশিষ্ট অডিও। |
| `duration` | number | আউটপুট অডিওর দৈর্ঘ্য, সেকেন্ডে পরিমাপ করা হয়। |
| `sample_rate` | integer | আউটপুট অডিওর Hz-এ স্যাম্পলিং ফ্রিকোয়েন্সি। |

## 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.com/v1/models/sam-audio/span-separate