Dolby noise-reduction system
Quick Summary
The Dolby noise-reduction system is a trademarked electronic device used to eliminate noise from recorded or broadcast sound. It works by responding to changing amplitudes in various frequency regions of an audio signal. During quieter passages, the system boosts the signal to increase the difference between the desired sound and unwanted background noise. When played back, normal levels are restored, and the background noise falls below the threshold of audibility. The term "Dolbyize" means to reduce noise using a Dolby device. This technology is particularly important for optical stereo sound tracks due to their narrow track width.123
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motion-picture technologyMixing…of noise reduction such as Dolby Type A. The Dolby system works by responding to changing amplitudes in various regions of the frequency spectrum of an audio signal. The quieter passages are boosted to increase the spread between the signal (desired sound) and the unwanted ground noise. When played back,…
Read More…of noise reduction such as Dolby Type A. The Dolby system works by responding to changing amplitudes in various regions of the frequency spectrum of an audio signal. The quieter passages are boosted to increase the spread between the signal (desired sound) and the unwanted ground noise. When played back,…
Read More- motion-picture technologySound reproduction
…area (SVA), popularly known as Dolby, though in fact made by several manufacturers, employs a split optical pickup for two sets of wires for the left and right channels. Three stage speakers (left, right, and center) are mounted behind the screen, and an array of speakers is spread along the…
Read More…area (SVA), popularly known as Dolby, though in fact made by several manufacturers, employs a split optical pickup for two sets of wires for the left and right channels. Three stage speakers (left, right, and center) are mounted behind the screen, and an array of speakers is spread along the…
Read More