> ## Documentation Index > Fetch the complete documentation index at: https://docs.musicgpt.com/llms.txt > Use this file to discover all available pages before exploring further. # Voice Changer > Convert the voice from an audio file or URL to a different voice. ## OpenAPI ````yaml POST /v1/VoiceChanger openapi: 3.1.0 info: title: Musicgpt API version: 1.0.0 description: API for retrieving conversion details by ID. servers: - url: https://api.musicgpt.com/api/public description: Production server security: [] paths: /v1/VoiceChanger: post: summary: Convert voice from audio file or URL description: Convert the voice from an audio file or URL to a different voice. requestBody: required: true content: multipart/form-data: schema: type: object properties: audio_url: type: string description: URL of audio file to process example: https://example.com/audio.wav audio_file: type: string format: binary description: Audio file to upload voice_id: type: string description: Voice model ID example: demo-voice-id remove_background: type: integer description: 1 to remove background noise, 0 to keep default: 0 enum: - 0 - 1 pitch: type: integer description: Pitch adjustment (-12 to +12) default: 0 minimum: -12 maximum: 12 webhook_url: type: string description: Callback URL example: https://example.com/callback required: - voice_id anyOf: - required: - audio_url - required: - audio_file responses: '200': description: Successful response content: application/json: schema: type: object properties: success: type: boolean task_id: type: string conversion_id: type: string eta: type: integer example: success: true task_id: 84038e1e-3687-4f7a-9c55-692754b125ee conversion_id: e3631817-165d-4f17-a7e2-7008d200ff3e eta: 22 '400': description: Bad Request content: application/json: schema: type: object properties: success: type: boolean error: type: string example: success: false error: The file could not be downloaded from the provided URL '402': description: Payment Required content: application/json: schema: type: object properties: success: type: boolean error: type: string example: success: false error: Insufficient credit balance '422': description: Unprocessable Entity content: application/json: schema: type: object properties: success: type: boolean error: type: string example: success: false error: Both audio_url and audio_file cannot be None '500': description: Internal Server Error content: application/json: schema: type: object properties: success: type: boolean error: type: string example: success: false error: Internal Server Error security: - ApiKeyAuth: [] x-codeSamples: - lang: Python source: >- import requests url = "https://api.musicgpt.com/api/public/v1/VoiceChanger" payload = { "audio_url": "", "voice_id": "", "remove_background": "", "pitch": "", "webhook_url": "" } # For file upload instead of URL: # files = {'audio_file': open('filepath', 'rb')} headers = { "Authorization": "" } response = requests.post(url, data=payload, headers=headers) # For file upload: # response = requests.post(url, data=payload, files=files, headers=headers) print(response.text) - lang: PHP source: >- "; // For URL-based processing $data = [ "audio_url" => "", "voice_id" => "", "remove_background" => 0, // 0 or 1 "pitch" => 0, // -12 to +12 "webhook_url" => "" ]; // For file upload (uncomment and replace) // $data = ["voice_id" => ""]; // $file = new CURLFile('path/to/audio.wav', 'audio/wav', 'audio_file'); $headers = [ "Authorization: " . $apiKey ]; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $data); // For file upload: // curl_setopt($ch, CURLOPT_POSTFIELDS, array_merge($data, ['audio_file' => $file])); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $response = curl_exec($ch); curl_close($ch); echo $response; ?> - lang: Go source: "package main\n\nimport (\n\t\"bytes\"\n\t\"fmt\"\n\t\"io\"\n\t\"mime/multipart\"\n\t\"net/http\"\n\t\"os\"\n)\n\nfunc main() {\n\turl := \"https://api.musicgpt.com/api/public/v1/VoiceChanger\"\n\tapiKey := \"\"\n\n\t// For URL-based processing\n\tpayload := map[string]string{\n\t\t\"audio_url\": \"\",\n\t\t\"voice_id\": \"\",\n\t\t\"remove_background\": \"0\",\n\t\t\"pitch\": \"0\",\n\t\t\"webhook_url\": \"\",\n\t}\n\n\t// For file upload (uncomment and replace)\n\t// file, _ := os.Open(\"audio.wav\")\n\t// defer file.Close()\n\n\tbody := &bytes.Buffer{}\n\twriter := multipart.NewWriter(body)\n\n\tfor key, val := range payload {\n\t\t_ = writer.WriteField(key, val)\n\t}\n\n\t// For file upload:\n\t// part, _ := writer.CreateFormFile(\"audio_file\", \"audio.wav\")\n\t// io.Copy(part, file)\n\twriter.Close()\n\n\treq, _ := http.NewRequest(\"POST\", url, body)\n\treq.Header.Set(\"Authorization\", apiKey)\n\treq.Header.Set(\"Content-Type\", writer.FormDataContentType())\n\n\tclient := &http.Client{}\n\tresp, err := client.Do(req)\n\tif err != nil {\n\t\tfmt.Println(err)\n\t\treturn\n\t}\n\tdefer resp.Body.Close()\n\n\tresponse, _ := io.ReadAll(resp.Body)\n\tfmt.Println(string(response))\n}" - lang: Java source: |- import okhttp3.*; import java.io.File; import java.io.IOException; public class VoiceChanger { public static void main(String[] args) throws IOException { String url = "https://api.musicgpt.com/api/public/v1/VoiceChanger"; String apiKey = ""; // For URL-based processing RequestBody requestBody = new FormBody.Builder() .add("audio_url", "") .add("voice_id", "") .add("remove_background", "0") .add("pitch", "0") .add("webhook_url", "") .build(); // For file upload (uncomment and replace) /* File audioFile = new File("audio.wav"); RequestBody requestBody = new MultipartBody.Builder() .setType(MultipartBody.FORM) .addFormDataPart("voice_id", "") .addFormDataPart("audio_file", "audio.wav", RequestBody.create(audioFile, MediaType.parse("audio/wav"))) .build(); */ Request request = new Request.Builder() .url(url) .post(requestBody) .header("Authorization", apiKey) .build(); OkHttpClient client = new OkHttpClient(); try (Response response = client.newCall(request).execute()) { System.out.println(response.body().string()); } } } components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: Authorization ````