When One Intelligence Is No Longer Enough

We were building a local voice assistant.

Not a cloud chatbot, but a real system running on Linux: a microphone capturing audio in real time, an offline transcription engine processing speech, and an asynchronous architecture that had to remain stable while everything happened at once. The goal sounded simple and turned out to be anything but — listen, understand and respond without relying on the internet, with low latency and without the system locking up.

The problem emerged right there, at the technical core of the project.

Audio flowed continuously through the ALSA driver while the transcription engine consumed CPU in heavy bursts. Whenever processing stretched a few milliseconds too far, the async loop lagged behind and the microphone began throwing input overflow errors. The symptoms were obvious: incomplete transcriptions, odd glitches, or a frozen system with no clear........

© The Times of Israel (Blogs)