大模型服务平台百炼：实时语音合成-CosyVoice

import os
import time
import dashscope
from dashscope.audio.tts_v2 import VoiceEnrollmentService, SpeechSynthesizer

# 1. 环境准备
# 推荐通过环境变量配置API Key
# 新加坡和北京地域的API Key不同。获取API Key：https://www.alibabacloud.com/help/zh/model-studio/get-api-key
# 若没有配置环境变量，请用百炼API Key将下行替换为：dashscope.api_key = "sk-xxx"
dashscope.api_key = os.getenv("DASHSCOPE_API_KEY")
if not dashscope.api_key:
    raise ValueError("DASHSCOPE_API_KEY environment variable not set.")

# 以下为新加坡地域WebSocket url，若使用北京地域的模型，需将url替换为：wss://dashscope.aliyuncs.com/api-ws/v1/inference
dashscope.base_websocket_api_url='wss://dashscope-intl.aliyuncs.com/api-ws/v1/inference'
# 以下为新加坡地域HTTP url，若使用北京地域的模型，需将url替换为：https://dashscope.aliyuncs.com/api/v1
dashscope.base_http_api_url = 'https://dashscope-intl.aliyuncs.com/api/v1'


# 2. 定义复刻参数
TARGET_MODEL = "cosyvoice-v3.5-plus" 
# 为音色起一个有意义的前缀
VOICE_PREFIX = "myvoice" # 仅允许数字和小写字母，小于十个字符
# 公网可访问音频URL
AUDIO_URL = "https://dashscope.oss-cn-beijing.aliyuncs.com/samples/audio/cosyvoice/cosyvoice-zeroshot-sample.wav" # 示例URL，请替换为自己的

# 3. 创建音色 (异步任务)
print("--- Step 1: Creating voice enrollment ---")
service = VoiceEnrollmentService()
try:
    voice_id = service.create_voice(
        target_model=TARGET_MODEL,
        prefix=VOICE_PREFIX,
        url=AUDIO_URL
    )
    print(f"Voice enrollment submitted successfully. Request ID: {service.get_last_request_id()}")
    print(f"Generated Voice ID: {voice_id}")
except Exception as e:
    print(f"Error during voice creation: {e}")
    raise e
# 4. 轮询查询音色状态
print("\n--- Step 2: Polling for voice status ---")
max_attempts = 30
poll_interval = 10 # 秒
for attempt in range(max_attempts):
    try:
        voice_info = service.query_voice(voice_id=voice_id)
        status = voice_info.get("status")
        print(f"Attempt {attempt + 1}/{max_attempts}: Voice status is '{status}'")
        
        if status == "OK":
            print("Voice is ready for synthesis.")
            break
        elif status == "UNDEPLOYED":
            print(f"Voice processing failed with status: {status}. Please check audio quality or contact support.")
            raise RuntimeError(f"Voice processing failed with status: {status}")
        # 对于 "DEPLOYING" 等中间状态，继续等待
        time.sleep(poll_interval)
    except Exception as e:
        print(f"Error during status polling: {e}")
        time.sleep(poll_interval)
else:
    print("Polling timed out. The voice is not ready after several attempts.")
    raise RuntimeError("Polling timed out. The voice is not ready after several attempts.")

# 5. 使用复刻音色进行语音合成
print("\n--- Step 3: Synthesizing speech with the new voice ---")
try:
    synthesizer = SpeechSynthesizer(model=TARGET_MODEL, voice=voice_id)
    text_to_synthesize = "恭喜，已成功复刻并合成了属于自己的声音！"
    
    # call()方法返回二进制音频数据
    audio_data = synthesizer.call(text_to_synthesize)
    print(f"Speech synthesis successful. Request ID: {synthesizer.get_last_request_id()}")

    # 6. 保存音频文件
    output_file = "my_custom_voice_output.mp3"
    with open(output_file, "wb") as f:
        f.write(audio_data)
    print(f"Audio saved to {output_file}")

except Exception as e:
    print(f"Error during speech synthesis: {e}")

1. 生成专属音色并试听效果，若对效果满意，进行下一步；否则重新生成。

   Python

   import requests
   import base64
   import os
   
   def create_voice_and_play():
       # 新加坡和北京地域的API Key不同。获取API Key：https://www.alibabacloud.com/help/zh/model-studio/get-api-key
       # 若没有配置环境变量，请用百炼API Key将下行替换为：api_key = "sk-xxx"
       api_key = os.getenv("DASHSCOPE_API_KEY")
       
       if not api_key:
           print("错误: 未找到DASHSCOPE_API_KEY环境变量，请先设置API Key")
           return None, None, None
       
       # 准备请求数据
       headers = {
           "Authorization": f"Bearer {api_key}",
           "Content-Type": "application/json"
       }
       
       data = {
           "model": "voice-enrollment",
           "input": {
               "action": "create_voice",
               "target_model": "cosyvoice-v3.5-plus",
               "voice_prompt": "A composed middle-aged male announcer with a deep, rich and magnetic voice, a steady speaking speed and clear articulation, is suitable for news broadcasting or documentary commentary.",
               "preview_text": "Dear listeners, hello everyone. Welcome to the evening news.",
               "prefix": "announcer"
           },
           "parameters": {
               "sample_rate": 24000,
               "response_format": "wav"
           }
       }
       
       # 以下为新加坡地域url，若使用北京地域的模型，需将url替换为：https://dashscope.aliyuncs.com/api/v1/services/audio/tts/customization
       url = "https://dashscope-intl.aliyuncs.com/api/v1/services/audio/tts/customization"
       
       try:
           # 发送请求
           response = requests.post(
               url,
               headers=headers,
               json=data,
               timeout=60  # 添加超时设置
           )
           
           if response.status_code == 200:
               result = response.json()
               
               # 获取音色ID
               voice_id = result["output"]["voice_id"]
               print(f"音色ID: {voice_id}")
               
               # 获取预览音频数据
               base64_audio = result["output"]["preview_audio"]["data"]
               
               # 解码Base64音频数据
               audio_bytes = base64.b64decode(base64_audio)
               
               # 保存音频文件到本地
               filename = f"{voice_id}_preview.wav"
               
               # 将音频数据写入本地文件
               with open(filename, 'wb') as f:
                   f.write(audio_bytes)
               
               print(f"音频已保存到本地文件: {filename}")
               print(f"文件路径: {os.path.abspath(filename)}")
               
               return voice_id, audio_bytes, filename
           else:
               print(f"请求失败，状态码: {response.status_code}")
               print(f"响应内容: {response.text}")
               return None, None, None
               
       except requests.exceptions.RequestException as e:
           print(f"网络请求发生错误: {e}")
           return None, None, None
       except KeyError as e:
           print(f"响应数据格式错误，缺少必要的字段: {e}")
           print(f"响应内容: {response.text if 'response' in locals() else 'No response'}")
           return None, None, None
       except Exception as e:
           print(f"发生未知错误: {e}")
           return None, None, None
   
   if __name__ == "__main__":
       print("开始创建语音...")
       voice_id, audio_data, saved_filename = create_voice_and_play()
       
       if voice_id:
           print(f"\n成功创建音色 '{voice_id}'")
           print(f"音频文件已保存: '{saved_filename}'")
           print(f"文件大小: {os.path.getsize(saved_filename)} 字节")
       else:
           print("\n音色创建失败")

   Java

   需要导入Gson依赖，若是使用Maven或者Gradle，添加依赖方式如下：

   Maven

   在pom.xml中添加如下内容：

   <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
   <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
       <version>2.13.1</version>
   </dependency>

   Gradle

   在build.gradle中添加如下内容：

   // https://mvnrepository.com/artifact/com.google.code.gson/gson
   implementation("com.google.code.gson:gson:2.13.1")

   import com.google.gson.JsonObject;
   import com.google.gson.JsonParser;
   import java.io.*;
   import java.net.HttpURLConnection;
   import java.net.URL;
   import java.util.Base64;
   
   public class Main {
       public static void main(String[] args) {
           Main example = new Main();
           example.createVoice();
       }
   
       public void createVoice() {
           // 新加坡和北京地域的API Key不同。获取API Key：https://www.alibabacloud.com/help/zh/model-studio/get-api-key
           // 若没有配置环境变量，请用百炼API Key将下行替换为：String apiKey = "sk-xxx"
           String apiKey = System.getenv("DASHSCOPE_API_KEY");
   
           // 创建JSON请求体字符串
           String jsonBody = "{\n" +
                   "    \"model\": \"voice-enrollment\",\n" +
                   "    \"input\": {\n" +
                   "        \"action\": \"create_voice\",\n" +
                   "        \"target_model\": \"cosyvoice-v3.5-plus\",\n" +
                   "        \"voice_prompt\": \"A composed middle-aged male announcer with a deep, rich and magnetic voice, a steady speaking speed and clear articulation, is suitable for news broadcasting or documentary commentary.\",\n" +
                   "        \"preview_text\": \"Dear listeners, hello everyone. Welcome to the evening news.\",\n" +
                   "        \"prefix\": \"announcer\"\n" +
                   "    },\n" +
                   "    \"parameters\": {\n" +
                   "        \"sample_rate\": 24000,\n" +
                   "        \"response_format\": \"wav\"\n" +
                   "    }\n" +
                   "}";
   
           HttpURLConnection connection = null;
           try {
               // 以下为新加坡地域url，若使用北京地域的模型，需将url替换为：https://dashscope.aliyuncs.com/api/v1/services/audio/tts/customization
               URL url = new URL("https://dashscope-intl.aliyuncs.com/api/v1/services/audio/tts/customization");
               connection = (HttpURLConnection) url.openConnection();
   
               // 设置请求方法和头部
               connection.setRequestMethod("POST");
               connection.setRequestProperty("Authorization", "Bearer " + apiKey);
               connection.setRequestProperty("Content-Type", "application/json");
               connection.setDoOutput(true);
               connection.setDoInput(true);
   
               // 发送请求体
               try (OutputStream os = connection.getOutputStream()) {
                   byte[] input = jsonBody.getBytes("UTF-8");
                   os.write(input, 0, input.length);
                   os.flush();
               }
   
               // 获取响应
               int responseCode = connection.getResponseCode();
               if (responseCode == HttpURLConnection.HTTP_OK) {
                   // 读取响应内容
                   StringBuilder response = new StringBuilder();
                   try (BufferedReader br = new BufferedReader(
                           new InputStreamReader(connection.getInputStream(), "UTF-8"))) {
                       String responseLine;
                       while ((responseLine = br.readLine()) != null) {
                           response.append(responseLine.trim());
                       }
                   }
   
                   // 解析JSON响应
                   JsonObject jsonResponse = JsonParser.parseString(response.toString()).getAsJsonObject();
                   JsonObject outputObj = jsonResponse.getAsJsonObject("output");
                   JsonObject previewAudioObj = outputObj.getAsJsonObject("preview_audio");
   
                   // 获取音色名称
                   String voiceId = outputObj.get("voice_id").getAsString();
                   System.out.println("音色ID: " + voiceId);
   
                   // 获取Base64编码的音频数据
                   String base64Audio = previewAudioObj.get("data").getAsString();
   
                   // 解码Base64音频数据
                   byte[] audioBytes = Base64.getDecoder().decode(base64Audio);
   
                   // 保存音频到本地文件
                   String filename = voiceId + "_preview.wav";
                   saveAudioToFile(audioBytes, filename);
   
                   System.out.println("音频已保存到本地文件: " + filename);
   
               } else {
                   // 读取错误响应
                   StringBuilder errorResponse = new StringBuilder();
                   try (BufferedReader br = new BufferedReader(
                           new InputStreamReader(connection.getErrorStream(), "UTF-8"))) {
                       String responseLine;
                       while ((responseLine = br.readLine()) != null) {
                           errorResponse.append(responseLine.trim());
                       }
                   }
   
                   System.out.println("请求失败，状态码: " + responseCode);
                   System.out.println("错误响应: " + errorResponse.toString());
               }
   
           } catch (Exception e) {
               System.err.println("请求发生错误: " + e.getMessage());
               e.printStackTrace();
           } finally {
               if (connection != null) {
                   connection.disconnect();
               }
           }
       }
   
       private void saveAudioToFile(byte[] audioBytes, String filename) {
           try {
               File file = new File(filename);
               try (FileOutputStream fos = new FileOutputStream(file)) {
                   fos.write(audioBytes);
               }
               System.out.println("音频已保存到: " + file.getAbsolutePath());
           } catch (IOException e) {
               System.err.println("保存音频文件时发生错误: " + e.getMessage());
               e.printStackTrace();
           }
       }
   }

2. 使用上一步生成的专属音色进行语音合成。

   这里参考了非流式调用示例代码，将voice参数替换为声音设计生成的专属音色进行语音合成。

   关键原则：声音设计时使用的模型 (target_model) 必须与后续进行语音合成时使用的模型 (model) 保持一致，否则会导致合成失败。

   Python

   # coding=utf-8
   
   import dashscope
   from dashscope.audio.tts_v2 import *
   import os
   
   # 新加坡地域和北京地域的API Key不同。获取API Key：https://www.alibabacloud.com/help/zh/model-studio/get-api-key
   # 若没有配置环境变量，请用百炼API Key将下行替换为：dashscope.api_key = "sk-xxx"
   dashscope.api_key = os.environ.get('DASHSCOPE_API_KEY')
   
   # 以下为新加坡地域url，若使用北京地域的模型，需将url替换为：wss://dashscope.aliyuncs.com/api-ws/v1/inference
   dashscope.base_websocket_api_url='wss://dashscope-intl.aliyuncs.com/api-ws/v1/inference'
   
   # 声音设计、语音合成要使用相同的模型
   model = "cosyvoice-v3.5-plus"
   # 将voice参数替换为声音设计生成的专属音色
   voice = "your_voice"
   
   # 实例化SpeechSynthesizer，并在构造方法中传入模型（model）、音色（voice）等请求参数
   synthesizer = SpeechSynthesizer(model=model, voice=voice)
   # 发送待合成文本，获取二进制音频
   audio = synthesizer.call("今天天气怎么样？")
   # 首次发送文本时需建立 WebSocket 连接，因此首包延迟会包含连接建立的耗时
   print('[Metric] requestId为：{}，首包延迟为：{}毫秒'.format(
       synthesizer.get_last_request_id(),
       synthesizer.get_first_package_delay()))
   
   # 将音频保存至本地
   with open('output.mp3', 'wb') as f:
       f.write(audio)

   Java

   import com.alibaba.dashscope.audio.ttsv2.SpeechSynthesisParam;
   import com.alibaba.dashscope.audio.ttsv2.SpeechSynthesizer;
   import com.alibaba.dashscope.utils.Constants;
   
   import java.io.File;
   import java.io.FileOutputStream;
   import java.io.IOException;
   import java.nio.ByteBuffer;
   
   public class Main {
       // 声音设计、语音合成要使用相同的模型
       private static String model = "cosyvoice-v3.5-plus";
       // 将voice参数替换为声音设计生成的专属音色
       private static String voice = "your_voice_id";
   
       public static void streamAudioDataToSpeaker() {
           // 请求参数
           SpeechSynthesisParam param =
                   SpeechSynthesisParam.builder()
                           // 新加坡地域和北京地域的API Key不同。获取API Key：https://www.alibabacloud.com/help/zh/model-studio/get-api-key
                           // 若没有配置环境变量，请用百炼API Key将下行替换为：.apiKey("sk-xxx")
                           .apiKey(System.getenv("DASHSCOPE_API_KEY"))
                           .model(model) // 模型
                           .voice(voice) // 音色
                           .build();
   
           // 同步模式：禁用回调（第二个参数为null）
           SpeechSynthesizer synthesizer = new SpeechSynthesizer(param, null);
           ByteBuffer audio = null;
           try {
               // 阻塞直至音频返回
               audio = synthesizer.call("今天天气怎么样？");
           } catch (Exception e) {
               throw new RuntimeException(e);
           } finally {
               // 任务结束关闭websocket连接
               synthesizer.getDuplexApi().close(1000, "bye");
           }
           if (audio != null) {
               // 将音频数据保存到本地文件“output.mp3”中
               File file = new File("output.mp3");
               // 首次发送文本时需建立 WebSocket 连接，因此首包延迟会包含连接建立的耗时
               System.out.println(
                       "[Metric] requestId为："
                               + synthesizer.getLastRequestId()
                               + "首包延迟（毫秒）为："
                               + synthesizer.getFirstPackageDelay());
               try (FileOutputStream fos = new FileOutputStream(file)) {
                   fos.write(audio.array());
               } catch (IOException e) {
                   throw new RuntimeException(e);
               }
           }
       }
   
       public static void main(String[] args) {
           // 以下为新加坡地域url，若使用北京地域的模型，需将url替换为：wss://dashscope.aliyuncs.com/api-ws/v1/inference
           Constants.baseWebsocketApiUrl = "wss://dashscope-intl.aliyuncs.com/api-ws/v1/inference";
           streamAudioDataToSpeaker();
           System.exit(0);
       }
   }