QUADRAPHONIC Meaning and
Definition
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Quadraphonic refers to a system of sound reproduction that utilizes four audio channels or speakers to create a three-dimensional audio experience. The term "quadraphonic" is derived from the combination of "quad" (meaning four) and "phonic" (related to sound).
In quadraphonic systems, sounds are divided into four discrete channels: front left, front right, rear left, and rear right. Each channel is assigned specific audio signals, allowing for a greater sense of spaciousness and immersion compared to traditional two-channel stereo systems. This creates a more realistic and enveloping sound field and enhances the listener's perception of direction and movement of sound sources.
Quadraphonic systems can employ various encoding techniques to achieve the separation of audio signals, such as matrix encoding or discrete encoding. Matrix encoding methods combine the four channels into two carrier signals, which are then decoded by a compatible playback system. On the other hand, discrete encoding utilizes four separate channels, delivering individual audio signals to each speaker without any matrixing or decoding process.
Although quadraphonic systems gained popularity in the 1970s, they ultimately faced limited commercial success due to issues with compatibility among different manufacturers and the introduction of other audio formats. However, the concept of quadraphonic sound remains an important part of audio engineering history and has influenced subsequent multichannel sound formats like Dolby Digital and surround sound systems.
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Etymology of QUADRAPHONIC
The word "quadraphonic" is derived from combining two roots: "quadra" meaning "four" and "phonic" meaning "sound" or "voice". "Quadra" is derived from the Latin word "quattuor", meaning "four", and "phonic" is derived from the Greek word "phōnē", meaning "sound" or "voice". When combined, they create "quadraphonic", a term used to describe a sound system or recording technology that involves the use of four separate audio channels.
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