# Why Is It Said That Wavelength, Frequency, And Pitch Are Important Characteristics Of Sound Wave?

**I**magine Yourself In A Sea. You See Different Kind Of Waves There-BigOnes, Small Ones, Huge Ones, And Sometimes, Scary Ones Too. The Highest Point Of Each Wave Is Called The Crest. Suppose You Are Floating On A Wave Crest, And Can See The Crest Of Another Waves In Front.

**T**hen, You Are Looking At The Wavelength Of Those Waves. In Other Words, Wavelength Is The Distance Between Two Identical Points In Two Back-To-Back Waves. In This Case, It Is The Distance Between Two Crests.Similarly, There Are Also Something Known As Trough, Which Are The Lowest Part Of Wave.

**T**he Frequency Of A Wave, On The Other Hand, refers To The Numbers Of Waves Produced By A Source Each Second. It Could Also Denote The Number Of Waves That Pass A Certain Point Each Second. The Unit Of The Frequency Is Hertz(Hz). KiloHertz, MegaHertz And GigaHertz Are Used When The Waves Have High Frequencies, Both Frequency And Wavelength Are Related To The Pitch Of A Sound, Meaning They Determine How High Or Low Sound Is Going To Be. The Greater The Frequency, The Shorter Is The Wavelength And, Higher The Pitch.

**A** general form of a sinusoidal wave is y(x,t)=Asin(kx−ωt+ϕ), where A is the amplitude of the wave, ω(Omega) is the wave’s angular frequency, k is the wavenumber, and ϕ(Phi) is the phase of the sine wave given in radians.

Curious Fact: A **Wavelength** Is The Length Of The Shortest Repeating Part Of A “Sine Wave“. All Waves Can Be Formed By Adding Up Sine Waves. That Is, Every Wave Is A Total Of Sine Waves, Which May Be Identified By Fourier Analysis.