This is a high fidelity external USB Soundcard or USB Headphones project that can be built for your PC or Mac. It is based on the latest PCM2706 IC which functions as a high quality, crystal clear 16-BIT Stereo DAC. It is a single chip digital-to-analog converter that offers two DA output stereo channels, digital SPDIF output and requires very few external components.
This document presents an introduction to the general concepts and performance of three-dimensional audio technology. Several audio technology categories are defined with the purpose of creating a common understanding of better-than-stereo audio playback methods.
Gamma correction matters if you have any interest in displaying an image accurately on a computer screen. Gamma correction controls the overall brightness of an image. Images which are not properly corrected can look either bleached out, or too dark. Trying to reproduce colors accurately also requires some knowledge of gamma. Varying the amount of gamma correction changes not only the brightness, but also the ratios of red to green to blue.
Stand ten feet from your monitor and examine the figure. If the smooth patch is darker or lighter than the background then you need to calibrate monitor gamma. Many computer monitors come from the factory preset for an office working environment which may not be ideal for viewing and editing photographic images. For color accuracy and consistency work in a darkened environment.
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Introductory information on various aspects of computer sound interfaces and related links.
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