Question

the loudness of normal speech of human is _________ ​

Answer 1

Answer:

Sound is measured in decibels (dB). A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB. Noise above 70 dB over a prolonged period of time may start to damage your hearing. Loud noise above 120 dB can cause immediate harm to your ears.

Answer 2

Answer:

This correlates well with the figure of 50-70 dB for a normal conversation in Table 1. Figure 2. Pitch and Intensity Profiles for Male and Female Speakers.