> I also recently discovered that something like 12% of CPU on my 2020 macbook air is used whenever I'm in a room with anything greater than perfect silence, by

> I also recently discovered that something like 12% of CPU on my 2020 macbook air is used whenever I'm in a room with anything greater than perfect silence, by 'coreaudiod', because it apparently is constantly listening to the microphone built in near the keyboard and spending cpu cycles trying to filter out background noise. Apparently running the signal desktop app in the background is enough to keep coreaudiod constantly wasting battery. Are you sure it's the Signal desktop app? My initial hunch was while reading was that maybe it's your machine constantly listening for a "Hey Siri". There are some reports of the same issue (and a possible solution) here: https://apple.stackexchange.com/questions/24913/why-is-the-coreaudiod-daemon-using-5-or-more-cpu https://apple.stackexchange.com/questions/24913/why-is-the-c... Though none of them mention Signal in particular.