Question

categorise sound into three categories based on frequencies?​

Answer 1

Answer:

Explanation:

Sounds are initially partitioned into three categories: people, nature, and manmade. Note that Figure 6 is limited in depth by the number of sounds used in the top level soundscape experiment (60). Thus the music category, for example, contains only piano and singing sounds. However, the depth of any branch could be expanded by applying the same experimental method to a restricted set of sounds; for example, to 60 different music sounds.

Answer 2

Answer:

Human beings can normally hear sounds with a frequency between about 20 Hz and 20,000 Hz. Sounds with frequencies below 20 hertz are called infrasound. Infrasound is too low-pitched for humans to hear. Sounds with frequencies above 20,000 hertz are called ultrasound.