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

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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
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asmhatre
2026-10-26 02:00:28 +00:00
co-authored by Claude Sonnet 5.5
parent ff58ff0189
commit 279be7eb9f
36 changed files with 1576 additions and 0 deletions
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audio/output/06-speech.txt
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# OpenAiAudioSpeechModel -- MOCK server
speech.call(String) with every default:
request json : {"input":"Three action items.","model":"gpt-4o-mini-tts","voice":"alloy","response_format":"mp3","speed":1.0}
response : 20310 bytes
with TextToSpeechPrompt and options:
request json : {"input":"Rahul: fix the login timeout bug.","model":"gpt-4o-mini-tts","voice":"coral","instructions":"Calm, like a project manager reading notes.","response_format":"wav","speed":1.1}
response : 35244 bytes, starts with RIFF
input of 5000 characters -> BadRequestException: 400: mock: the maximum length of input is 4096 characters, got 5000