History of Multichannel Audio from Mag Stripe to Dolby Digital Surround Sound Past, Present, and Future
Surround Sound Past, Present, and Future A history of multichannel audio from mag stripe to Dolby Digital Surround Sound Past, Present, and Future ilm sound, television audio, reserved for the occasional dramatic and music playback formats effect—ethereal voices in religious used to be distinctly different epics, for example. Some formats F products of industries often switched this channel off by means workingF in isolation. In recent years, of trigger tones when it wasn’t however, this has changed. The needed because the track on the popularity of surround sound in the film was particularly narrow, and thus home has brought these industries very hissy. A history of and their sound formats closer Although film stereo lost favor in together. And now digital multichan- the 1960s and early 1970s due to high multichannel audio nel technology is fostering an even costs of the magnetic formats and a from mag stripe more consistent approach to sound slump in the film business, sound reproduction, easing the burden on mixers continued to experiment with to Dolby Digital both consumer and producer while the effects channel. Formats such as providing unparalleled fidelity not just six-track 70 mm magnetic (see to the tonality of live sound, but also sidebar) provided consistent signal-to- to its spatiality. noise ratios on all channels, so mixers could use the effects channel to Origins of surround sound envelop the audience in continuous low-level ambient sounds. The effects The first commercially successful channel came to convey greater sonic multichannel sound formats were realism overall, not just the occasional developed in the early 1950s for the dramatic effect.
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