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
36 changed files with 1576 additions and 0 deletions
@@ -0,0 +1,14 @@
+# A 16-minute recording, 30,278,444 bytes -- MOCK server
+
+1) the whole file in one request (mock limit 26,214,400 bytes):
+   exception: com.openai.errors.UnexpectedStatusCodeException
+   message  : 413: mock: Maximum content size limit (26214400) exceeded (30278929 bytes read)
+
+2) MinutesService.transcribe: budget 24,000,000 bytes per chunk, silence of at least 2.0 s, RMS below 500
+   chunk 0:     0.0 s ->   733.5 s   23,472,022 bytes  cut: mid-silence
+   chunk 1:   733.5 s ->   946.2 s    6,806,466 bytes  cut: end of file
+   requests the mock saw: 2
+   - file=part-00-meeting.wav bytes=23,472,022 prompt=(none)
+   - file=part-01-meeting.wav bytes=6,806,466 prompt="...the on call rotation changes next month."
+   script lines recovered: 30 of 30, in order: true
+   [inaudible] markers: 0