ondaps

Office noise detection and prevention system

Prerequisites

• Google AIY VoiceKit https://aiyprojects.withgoogle.com/voice/ https://www.pollin.de/p/google-aiy-voice-kit-fuer-raspberry-pi-3-b-810883
• Raspberry Pi
• MicroSD card

Step by Step

• flash image to SD card. The image can be found on https://aiyprojects.withgoogle.com/voice-v1/#assembly-guide-1-get-the-voice-kit-sd-image

• sudo nmap -sP 10.0.10.0/22 | awk '/^Nmap/{ip=$NF}/B8:27:EB/{print ip}'

• As a base script we found a code sample to monitor the microphone input volume on https://ubuntuforums.org/showthread.php?t=500337&s=e6f196e35bd62002850c10a0af874e80&p=6505818#post6505818

Setup as systemd service

• you'll need to set up pulseaudio as a systemwide service -> https://possiblelossofprecision.net/?p=1956
• the user pi needs to have access to audio and gpio
• sudo usermod -a -G audio,pulse,pulse-access,gpio pi

Alternative

• If you don't want to use the Google Voice Kit raspi image, you can alternatively download and flash e.g. the Raspbian stretch and manually install the necessary dependencies
• Raspbian stretch: https://downloads.raspberrypi.org/raspbian_full_latest
• Log on to Raspbian and issue this to install pulseaudio 'sudo apt-get install pulseaudio'