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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/09-end-to-end.txt
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# Recording -> transcript -> Minutes -> audio (MOCK audio server, STUB chat model)
1) transcribe: 30,278,444 bytes -> 2 request(s) -> 1701 characters
2) summarise : transcript of 292 words reached the chat model as the user message: true
2 action items: [ActionItem[owner=Rahul, task=Fix the login timeout bug, due=before the release], ActionItem[owner=Priya, task=Send the revised budget to finance, due=Friday]]
3) read back : 1 clip(s), 221910 bytes, spoken text: Falcon weekly sync. 1 decision. Ship version 2.4 on the fourteenth of November. 2 action items. Rahul: Fix the login timeout bug, due before the release. Priya: Send the revised budget to finance, due Friday.
speech request: {"input":"Falcon weekly sync. 1 decision. Ship version 2.4 on the fourteenth of November. 2 action items. Rahul: Fix the login timeout bug, due before the release. Priya: Send the revised budget to finance, due Friday.","model":"gpt-4o-mini-tts","voice":"coral","response_format":"wav","speed":1.0}