v4.6 -1 (#459)

packages/service/core/ai/audio/speech.ts

@@ -0,0 +1,26 @@
+import { Text2SpeechProps } from '@fastgpt/global/core/ai/speech/api';
+import { getAIApi } from '../config';
+import { defaultAudioSpeechModels } from '../../../../global/core/ai/model';
+import { Text2SpeechVoiceEnum } from '@fastgpt/global/core/ai/speech/constant';
+
+export async function text2Speech({
+  model = defaultAudioSpeechModels[0].model,
+  voice = Text2SpeechVoiceEnum.alloy,
+  input,
+  speed = 1
+}: Text2SpeechProps) {
+  const ai = getAIApi();
+  const mp3 = await ai.audio.speech.create({
+    model,
+    voice,
+    input,
+    response_format: 'mp3',
+    speed
+  });
+  const buffer = Buffer.from(await mp3.arrayBuffer());
+  return {
+    model,
+    voice,
+    tts: buffer
+  };
+}