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# 变声器

POST https://api.elevenlabs.io/v1/voice-changer/{voice_id}
Content-Type: multipart/form-data

将音频从一种音色转换为另一种音色，同时完全控制情感、时机和表达方式。

Reference: https://elevenlabs.io/docs/api-reference/speech-to-speech/convert

## Servers

- `https://api.elevenlabs.io` (Production, default)
- `https://api.us.elevenlabs.io` (Production US)
- `https://api.eu.residency.elevenlabs.io` (Production EU)
- `https://api.in.residency.elevenlabs.io` (Production India)
- `https://api.sg.residency.elevenlabs.io` (Production Singapore)

## Request

### Path parameters

- `voice_id` (string, required) — 要使用的音色 ID。使用 [获取音色](/docs/api-reference/voices/search) 端点列出所有可用音色。

### Query parameters

- `enable_logging` (boolean, optional, default: true) — 当 enable_logging 设为 false 时，此请求将使用零留存模式。这意味着该请求无法使用历史记录功能，包括请求拼接。零留存模式仅限企业版客户使用。
- `optimize_streaming_latency` (integer, optional, nullable, deprecated) — 可启用延迟优化，但会牺牲部分质量。可达到的最低最终延迟因模型而异。可选值： 0 - 默认模式（不进行延迟优化） 1 - 常规延迟优化（约为选项 3 可实现延迟改善的 50%） 2 - 强延迟优化（约为选项 3 可实现延迟改善的 75%） 3 - 最大延迟优化 4 - 最大延迟优化，同时关闭文本规范化以进一步降低延迟（延迟最低，但可能会错误朗读数字、日期等）。 默认值为 None。
- `output_format` (enum, optional, default: mp3_44100_128) — 生成音频的输出格式。格式为 codec_sample_rate_bitrate。因此，采样率为 22.05kHz、比特率为 32kbs 的 mp3 表示为 mp3_22050_32。使用 192kbps 比特率的 MP3 需要订阅 Creator 或更高版本。采样率为 44.1kHz 的 PCM 和 WAV 格式需要订阅 Pro 或更高版本。请注意，μ-law 格式（有时写作 mu-law，通常近似写作 u-law）常用于 Twilio 音频输入。
  - Allowed values: `alaw_8000`, `mp3_22050_32`, `mp3_24000_48`, `mp3_44100_128`, `mp3_44100_192`, `mp3_44100_32`, `mp3_44100_64`, `mp3_44100_96`, `opus_48000_128`, `opus_48000_192`, `opus_48000_32`, `opus_48000_64`, `opus_48000_96`, `pcm_16000`, `pcm_22050`, `pcm_24000`, `pcm_32000`, `pcm_44100`, `pcm_48000`, `pcm_8000`, `ulaw_8000`, `wav_16000`, `wav_22050`, `wav_24000`, `wav_32000`, `wav_44100`, `wav_48000`, `wav_8000`

### Body (multipart/form-data)

This endpoint expects a multipart form containing a file.

- `audio` (file, required) — 包含内容和情绪、用于控制生成语音的音频文件。
- `model_id` (string, optional) — 要使用的模型标识符，可通过 GET /v1/models 查询。模型必须支持语音转语音，可通过 can_do_voice_conversion 属性确认。
- `voice_settings` (string, optional) — 覆盖指定音色已存储设置的音色设置，仅应用于当前请求。需以 JSON 编码字符串发送。
- `seed` (integer, optional) — 指定后，系统会尽力进行确定性采样，使使用相同种子和参数的重复请求返回相同结果。但不保证完全确定。必须是介于 0 和 4294967295 之间的整数。
- `remove_background_noise` (boolean, optional) — 设定后，将使用我们的人声分离模型去除音频输入中的背景噪音。仅适用于变声器。
- `file_format` (enum, optional) — 输入音频的格式。可选值为 'pcm_s16le_16' 或 'other'。对于 `pcm_s16le_16`，输入音频必须是采样率为 16kHz、单声道、采用小端字节序的 16 位 PCM。延迟将低于传入编码波形。

## Response

### 200

生成的音频文件

- File download.

## Errors

### 422 Unprocessable Entity Error

验证错误。

- `detail` (list of ValidationError, optional)

## Types

### ValidationError

- `loc` (list of ValidationErrorLocItems, required)
- `msg` (string, required)
- `type` (string, required)

### ValidationErrorLocItems

- string
- integer

## Examples

**Request**

```json
{
  "audio": "<file: <file1>>",
  "model_id": "eleven_multilingual_sts_v2"
}
```

**SDK Code**

```python
import requests

url = "https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb"

querystring = {"output_format":"mp3_44100_128"}

files = { "audio": "open('<file1>', 'rb')" }
payload = {
    "file_format": ,
    "model_id": "eleven_multilingual_sts_v2",
    "remove_background_noise": ,
    "seed": ,
    "voice_settings": 
}
headers = {"xi-api-key": "xi-api-key"}

response = requests.post(url, data=payload, files=files, headers=headers, params=querystring)

print(response.json())
```

```javascript
const url = 'https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128';
const form = new FormData();
form.append('audio', '<file1>');
form.append('file_format', '');
form.append('model_id', 'eleven_multilingual_sts_v2');
form.append('remove_background_noise', '');
form.append('seed', '');
form.append('voice_settings', '');

const options = {method: 'POST', headers: {'xi-api-key': 'xi-api-key'}};

options.body = form;

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"audio\"; filename=\"<file1>\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\neleven_multilingual_sts_v2\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"remove_background_noise\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voice_settings\"\r\n\r\n\r\n-----011000010111000001101001--\r\n")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("xi-api-key", "xi-api-key")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["xi-api-key"] = 'xi-api-key'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"audio\"; filename=\"<file1>\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\neleven_multilingual_sts_v2\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"remove_background_noise\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voice_settings\"\r\n\r\n\r\n-----011000010111000001101001--\r\n"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128")
  .header("xi-api-key", "xi-api-key")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"audio\"; filename=\"<file1>\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\neleven_multilingual_sts_v2\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"remove_background_noise\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voice_settings\"\r\n\r\n\r\n-----011000010111000001101001--\r\n")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128', [
  'multipart' => [
    [
        'name' => 'audio',
        'filename' => '<file1>',
        'contents' => null
    ],
    [
        'name' => 'model_id',
        'contents' => 'eleven_multilingual_sts_v2'
    ]
  ]
  'headers' => [
    'xi-api-key' => 'xi-api-key',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128");
var request = new RestRequest(Method.POST);
request.AddHeader("xi-api-key", "xi-api-key");
request.AddParameter("undefined", "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"audio\"; filename=\"<file1>\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file_format\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_id\"\r\n\r\neleven_multilingual_sts_v2\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"remove_background_noise\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"seed\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"voice_settings\"\r\n\r\n\r\n-----011000010111000001101001--\r\n", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["xi-api-key": "xi-api-key"]
let parameters = [
  [
    "name": "audio",
    "fileName": "<file1>"
  ],
  [
    "name": "file_format",
    "value": 
  ],
  [
    "name": "model_id",
    "value": "eleven_multilingual_sts_v2"
  ],
  [
    "name": "remove_background_noise",
    "value": 
  ],
  [
    "name": "seed",
    "value": 
  ],
  [
    "name": "voice_settings",
    "value": 
  ]
]

let boundary = "---011000010111000001101001"

var body = ""
var error: NSError? = nil
for param in parameters {
  let paramName = param["name"]!
  body += "--\(boundary)\r\n"
  body += "Content-Disposition:form-data; name=\"\(paramName)\""
  if let filename = param["fileName"] {
    let contentType = param["content-type"]!
    let fileContent = String(contentsOfFile: filename, encoding: String.Encoding.utf8)
    if (error != nil) {
      print(error as Any)
    }
    body += "; filename=\"\(filename)\"\r\n"
    body += "Content-Type: \(contentType)\r\n\r\n"
    body += fileContent
  } else if let paramValue = param["value"] {
    body += "\r\n\r\n\(paramValue)"
  }
}

let request = NSMutableURLRequest(url: NSURL(string: "https://api.elevenlabs.io/v1/voice-changer/JBFqnCBsd6RMkjVDRZzb?output_format=mp3_44100_128")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```