In a previous entry, the velocity of a sound-emitting source ( vs ) and a moving receptor of sound ( vr ) were related to the frequency of the sound emitted by the source ( fs ) and the frequency at which the receptor interpreted the emitted sound ( fr ) as follows: ( frContinue reading “SOUND: Calculating the Speed of an Approaching Target”
Tag Archives: doppler effect
SOUND: Intensity, Loudness, and the Decibel System
The intensity ( I ) of a sound is quantitatively different than how sound is perceived by the ear. The perception of sound is referred to as ” loudness “. When a sound’s intensity increases by 10 decibels ( B ), the ear perceives this increase as a ” doubling ” in loudness. Logarithmic mathematicsContinue reading “SOUND: Intensity, Loudness, and the Decibel System”
SOUND: The Doppler Effect
Sound is a quantification of the rate at which pressure waves pass through a “ springy “ gas medium such as air. A complete wave cycle is inclusive of regions of high and low pressure created by a vibrating source of sound. If we consider a circumstance in which a stationary source of sound isContinue reading “SOUND: The Doppler Effect”
RENAISSANCE PHYSICS 