What is speaker ?
Speaker is an electronics device that converts inputs electronic signal into sound .They are widely used in almost every electronics equipment . mobile ,laptop,ear-phone,tv,radios are the common example of speaker use . In high defination musical DJ system the sound signal must be amplified by using suitable amplifier with appropriate power source .
How does speaker works ?
When particle move back and forth continuously then it produce sound and we here it after the certain frequency of signal . LoudSpeaker works similar way . The outer part of the LoudSpeaker is made in such a way that it moves back and forth according to the applied signal producing audable sound and we hear it as explain in animation below .