Add a whistle detector using the webaudio api and https://github.com/shubhamjain/whistlerr and http://coffeecoder.net/blog/building-a-whistle-detector/. In response to a whistle use text to speech to read out the times.
Add a whistle detector using the webaudio api and https://github.com/shubhamjain/whistlerr and http://coffeecoder.net/blog/building-a-whistle-detector/. In response to a whistle use text to speech to read out the times.