The playback is suitable over stereo speakers. ![]() ![]() Near-coincident technique: mixed stereophony - This technique combines the principles of both A-B and X-Y (coincident pair) techniques.M/S technique: Mid/Side stereophony - A bidirectional microphone facing sideways and another microphone at an angle of 90°are kept facing the sound source.This results in capturing time-of-arrival stereo information as well as some level (amplitude) difference information. A-B technique: time-of-arrival stereophony- Here two parallel microphones which are not direction specific are kept some distance apart.X-Y technique: intensity stereophony - In this technique two directional microphones are at the same place, typically pointing at an angle between 90° and 135° to each other.There are following methods of recording in stereo. It is expensive and it requires skill to record stereo sound. The signals have a specific level and phase relationship to each other so that when played back through a suitable reproduction system, there will be an apparent image of the original sound source. These sound systems have two or more independent audio signal channels. The stereo effect is achieved by careful placement of microphone receiving different sound pressure levels accordingly even the loudspeakers need to have the capability to produce the stereo and they also need to be positioned carefully. Stereo recording is done with two or more special microphones. It is cheaper and easier to record in mono sound. Hand held recorders record sound in mono. The sound played for instance by each instrument in a band will not be heard distinctly though it will have full fidelity. Everyone hears the very same signal and at the same sound level. The signal contains no level, arrival time or phase information that would replicate or simulate directional cues. For headphones and multiple loudspeakers the paths are mixed into a single signal path and transmitted. Mono sound recording is done mostly with one microphone and only one loudspeaker is required to listen to the sound. Today no monaural standards exist for 8-track tape and compact disc and all films are released in stereophonic sound. Similarly movies were released in both versions because some theaters were not equipped with stereo speakers systems. In the 1960s albums were released as both monaural LPs and stereo LPs because people still had their old mono players and the radio station were mostly AM. With the advent of magnetic tapes the usage of stereo sound became easier. In November 1940 Walt Disney's Fantasia became the first commercial motion picture with stereophonic sound. Until the 1940s mono sound recording was popular and most of the recording was done in mono even though the two-channel audio system was demonstrated by Clément Ader in as early as 1881. ![]() Stereo sound is preferred for listening to music, in theaters, radio stations dedicated to music, FM broadcasting and Digital Audio Broadcasting (DAB). Mono sound is preferred in radiotelephone communications, telephone networks, and radio stations dedicated to talk shows and conversations, public address system, hearing aids. Movies, Television, Music players, FM radio stations Public address system, radio talk shows, hearing aid, telephone and mobile communication, some AM radio stations ![]() It's important to know the relative position of the objects and events.Īudio signals are routed through a single channelĪudio signals are routed through 2 or more channels to simulate depth/direction perception, like in the real world. Requires technical knowledge and skill to record, apart from equipment. More expensive for recording and reproductionĮasy to record, requires only basic equipment Less expensive for recording and reproduction Stereophonic sound or, more commonly, stereo, is a method of sound reproduction that creates an illusion of multi-directional audible perspective. Monaural or monophonic sound reproduction is intended to be heard as if it were a single channel of sound perceived as coming from one position. Comparison chart Mono versus Stereo comparison chart
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