Question

What difference will you observe in a sound if its frequency changes  from 1000 Hz to 100Hz ? ​

Answer 1

we find difference in shrillness of sound i.e. pitch decreases with decrease in frequency

Answer 2

1. For example, a sound at 10,000 Hz must have an intensity level of 30 dB to seem as loud as a 20 dB sound at 1000 Hz. Sounds above 120 phons are painful as well as damaging. We do not often utilize our full range of hearing.