Table 3: Overview of the average CPU load, memory usage, and minimum network bandwidth of the server when the audio is not preprocessed on the sensornode side.

FFT input length CPU load Memory usage Network bandwidth
(s) (%) (MiB) (Bytes/s)

0.125 98 2.5 96000
0.25 95 2.6 96000
0.5 92 2.6 96000
1 90 2.7 96000