Showing posts from April, 2014

Hi - Fi and Stereo

High fidelity is the attempt to reproduce by electronic and electromechanical devices (and without distortion) the full rang…

Recording of CD (Compact Disc)

CD Recording:  For recording, first a master disc is prepared. The laser beam acts as a stylus, which is modulated by digita…

Need of DC and AC Biasing

Need of DC and AC Biasing: We have studied Hysteresis curve for magnetic materials which shows that the curve (characterist…

Loud Speakers Types

Loud Speakers : A loud Speaker is a device which is actuated by electrical energy and radiates acoustic energy. The selecti…

Microphones Types

Microphones: A Microphone is a device that converts the sound energy into electrical energy. Conversion of sound energy into…

Frequency Response and Equalization

Frequency Response and Equalization: In audio systems i.e. AF amplifiers, microphones, loud speakers, various types of recor…

Properties of Sound

Properties of Sound: Some of the important properties/characteristics of sound are as given below: Intensity: While propaga…

Nature of Sound

Nature of Sound: Sound is a longitudinal wave motion. It has compressions and rarefraction in medium of travel. Air acts as…

Audio and Video Systems

Audio Systems: An audio system is a system which involves an audio signal. In other words, Audio Systems “process” sound. T…

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