Hearthlen：説話時文字即時顯示

The Words Appear While You Talk

The ThinkPad microphone was already on. A two-second recording peaked at 4976, and the listener's first frames peaked at 2852.

Savindu Thathsara, savithathsara.me. This is a Hearthlen note from the laptop.

The card is the Intel HDA device, codec ALC257. The internal mic boost is at 30 dB, the top of that control. What was missing was the picture. The voice session now opens the Hearthlen chat, and while you are still talking the words land in a "You" line and in the box at the bottom. A spoken "how are you" from this desk became caption 'How are you?' and then heard='How are you?' in 373 ms. At 10:37 the window showed that line, under "Hi, Savindu.", with the reply beneath it.

Room noise can make the transcriber repeat one short phrase. A line that does that is thrown away, and a phrase only starts once it is louder than the noise floor measured at startup, which was 833 this time.

The session those words belong to opens from Win+V.

Savindu Thathsara builds practical AI and automation in London. This series is the public log of an offline AI operating system he is writing and learning at the same time.