This is a project I recently created for Hackaday's Sci Fi contest and thought folks on HN might be interested in checking it out too. The device is made to replicate the verbal morality statute monitor (AKA swear detector) from the future world envisioned by
the movie Demolition Man. You can see a video of it in action here (there is some swearing though): https://www.youtube.com/watch?v=jjJ738ke4bU
The hardware is a Rasbperry Pi connected to a USB microphone (PS3 eye camera), thermal printer, a small speaker & amp, and some switches & LEDs. For speech recognition I'm using the excellent PocketSphinx project, however I'm using their subversion trunk which
has a new keyword spotting algorithm that's coming in the next major release. I'm really happy with how the swear detection works, and that it can run in real time without any issues on the Raspberry Pi. The detection isn't perfect, there are false positives, but still makes for a fun project.
The hardware is a Rasbperry Pi connected to a USB microphone (PS3 eye camera), thermal printer, a small speaker & amp, and some switches & LEDs. For speech recognition I'm using the excellent PocketSphinx project, however I'm using their subversion trunk which has a new keyword spotting algorithm that's coming in the next major release. I'm really happy with how the swear detection works, and that it can run in real time without any issues on the Raspberry Pi. The detection isn't perfect, there are false positives, but still makes for a fun project.