By Ezra -
I had practically perform this experiment with voice recorder measuring scale and timer .
Requirement : Timer , Distance calculator tape , Recorder
(Mobile, human or any other recorder ),
Silence area were there is no other voice can disrupt .
Human voice
There are three types of Human voices :
1 Low voice / Code voice - Low voice is a voice which can be heard in a very less distance . It travels very less distance . Because energy used is very low . It cannot be heard after certain distance . This voice can be used for 1–3 listener at one time without obstruction of other voice .
Low voice may be limit between 0–1 m (100 cm)
Travelling speed 1m /sec
Low voice cannot get heard to the listener in slight voice of another person or other object (Vehicles , Cars etc )
2 Medium voice / Talking voice - Medium voice is a voice which can be heard to certain distance . It travels more distance . Because energy used moderate . It can be used for 1–25 listener at one time without obstruction of other voice.
Medium voice limit between 0–8.5 m (850 cm )
Travelling speed 8.5 m/ sec
Medium voice can be heard or may not be heard if other voice of person or other object is there (Vehicles , Cars etc)
3 Loud voice / Noisy voice - Loud voice is a voice which can be heard upto large distance . It travels far distance . Because energy used is very high .It can be used for 0–50 or even more listener without obstruction of other voice.
Travelling speed 330 m /sec
Distance increase voice - Voice travelling speed decrease
Time taken to speak Letter and words :
If you speak A it takes 0.22 sec
ABC takes -1 sec
Adam - 0.71–0.81 sec
Adam Eve - 1.10 - 1.20 sec
A-Z Alphabet takes - 9–10 sec
1–30 number takes - 13–14 sec
1–50 number takes - 22–23 sec
My Name is Ezra takes - 4.0–4.5 sec
The human voice has no speed metric other than words (or syllables) per second (or minute). The speed of sound, on the other hand is measured quite accurately with a variety of technologies. It is around 330 m/s in dry air at 1 atm pressure and 20 degrees C.
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