What is the actual frequency bandwidth of human speech? I know there is variation for gender, age and so, but what is the general range... I seem to find different ranges.
Like here: https://web.archive.org/web/20180523105329/http://recognize-speech.com:80/preprocessing
Is the range defined between 100Hz and 8kHz
Telephones are made to work in the ranges 300Hz to 3400Hz, according to Wikipedia: https://en.wikipedia.org/wiki/Voice_frequency
The hearing is in range