Add audio module: meeting minutes with Spring AI speech-to-text, structured output and text-to-speech

OpenAiAudioTranscriptionModel -> ChatClient.entity(Minutes.class) -> OpenAiAudioSpeechModel, WAV chunking at a silence under the 25 MB upload limit, SDK retry behaviour, the 4096-character speech limit and a cost model. Audio endpoints are a local mock and the chat model a stub; no real model was called. Spring Boot 4.1.2, Spring AI 2.0.2, Java 25. Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01CifR2BE7PBvRy5hT8TS9oz
2026-10-26 02:00:28 +00:00
parent ff58ff0189
commit 279be7eb9f
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+# Spring AI 2.0.2 audio classes and defaults (read from the jars)
+
+speech-to-text interface : org.springframework.ai.audio.transcription.TranscriptionModel
+speech-to-text OpenAI    : org.springframework.ai.openai.OpenAiAudioTranscriptionModel
+text-to-speech interface : org.springframework.ai.audio.tts.TextToSpeechModel
+text-to-speech OpenAI    : org.springframework.ai.openai.OpenAiAudioSpeechModel
+
+transcription DEFAULT_TRANSCRIPTION_MODEL = whisper-1
+transcription DEFAULT_RESPONSE_FORMAT     = text
+speech        DEFAULT_SPEECH_MODEL        = gpt-4o-mini-tts
+speech        DEFAULT_VOICE               = alloy
+speech        DEFAULT_RESPONSE_FORMAT     = mp3
+speech        DEFAULT_SPEED               = 1.0
+both          DEFAULT_TIMEOUT             = PT1M
+both          DEFAULT_MAX_RETRIES         = 3