Quadraphonic (or quadrophonic, also called quadrasonic or by the neologism quadio[1] [formed by analogy with "stereo"]) sound – equivalent to what is now called 4.0 surround sound – uses …

2024年5月7日 · The popular history of quadraphonics (4-channel sound from LP records, tapes, and radio broadcasts) chronicles a spectacular failure. The major record labels, led by …

2024年6月12日 · Quadraphonic sound, often referred to as quad, promised a revolution in the way listeners experienced audio by adding two additional channels to the traditional two …

2024年6月28日 · While stereo has remained the dominant audio format for decades, quadraphonic sound offers a more spatially rich and enveloping listening experience. …

2019年7月8日 · In stereo quadraphonic systems (SQ), four sound channels were converted down to two channels and then back to four through an SQ decoder. To experience the immersive …

Quadraphonic sound is a format for encoding stereophonic audio using four channels; usually, front left and right, and rear left and right. Quadraphonic sound, or multi-channel diversion, …

2018年11月1日 · Quadraphonic sound was one of the earliest surround sound technologies that emerged in the 1970s. It was technically known as ‘4.0 surround’ in audiophile speak. The …

2023年11月26日 · In audio technology history, the quadraphonic sound system was an innovative yet short-lived phenomenon. Conceived in the early 1970s, it aimed to revolutionize the …

SQ Quadraphonic ("Stereo Quadraphonic") [1] was a matrix 4-channel quadraphonic sound system for vinyl LP records. It was introduced by CBS Records (known in the United States …

A four-speaker surround sound system introduced in the 1970s that never caught on, primarily because of the recording technologies available at that time. Quadraphonic sound used two …