In-depth technical writing on AI, ML, distributed systems, and modern engineering.
The two-step upload → send flow, MIME type requirements (audio/ogg; codecs=opus), delivery status callbacks, and the silent success trap: AP…
WAV → OGG/OPUS: the full annotated command. Bitrate choices for voice (48k VBR Opus). Detecting actual format with the file command vs trust…
Test each step independently: TTS, conversion, upload, send. Meta delivery status as ground truth. Decoding common error codes (131053 and o…
Create in /tmp with random names, always unlink in finally blocks, PHP register_shutdown_function for emergency cleanup, and monitoring /tmp…
Stripping WhatsApp markdown (/u flag required), expanding legal abbreviations for natural pronunciation, converting bullet lists to spoken c…
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