> would use so much data You shouldn't assume that and actually do the math. GSM-HR (an early 90s codec that is fast to encode and designed to be low-power) co

> would use so much data You shouldn't assume that and actually do the math. GSM-HR (an early 90s codec that is fast to encode and designed to be low-power) combined with a trial noise gate will only require[1] uploading <100 kB/hr. > Only a plugged in laptop/desktop Audio compression existed before MP3/AAC. GSM-HR only uses 5.6 kbit/s, and was designed to be encoded on early (GSM) cellphone embedded CPUs/DSPs. Modern devices have several orders of magnitude more CPU/power/bandwidth available. > all the time It's only necessary to record when voice is actually present. A trivial noise-gate[2] will cut the recording time down to only a few percent of the time at most. Obviously a better filter should be possible. [1] https://news.ycombinator.com/item?id=16346416 https://news.ycombinator.com/item?id=16346416 [2] https://en.wikipedia.org/wiki/Noise_gate https://en.wikipedia.org/wiki/Noise_gate