When the source of a sound is moving, the speed of sound waves emitted from the source is not affected by the motion of the source itself. However, the perceived frequency of the sound may change due to the Doppler effect, if the source is moving towards or away from the listener.
For the sound from a source not to be shift in frequency , the radial velocity of the source to the observer must be zero : that is the source must not be moving towards or away from the observer
You would then hear some sound sooner than others.
Sound power level (in decibels) is calculated by determining the sound pressure level (in decibels) at a reference distance from the source of the sound. The sound power level is based on the sound pressure level and the distance from the source, using the inverse square law to account for the spreading of sound waves in three dimensions.
Sound power or sound intensity I is a sound energy quantity.Sound pressure p is a sound field quantity.Sound intensity is sound pressure squared. I = p².See related link.
The comparative is more punctual; the superlative is most punctual.
punctual? =0/
punctual
Punctual is an adjective.
The suffix of "punctual" is "-al".
Bob is my most punctual student.I am a punctual person; I am always on time.
He made it a point to always be punctual. You must be punctual to an interview or you are starting off on a bad foot.
A siren makes a sound and that's why it must be a sound source.
Punctuality (noun); punctually (adverb)
Late, lateness
do you know someone who is alwys punctual
The source of energy for sound waves are vibrations.