December 2011
Intermediate to advanced
485 pages
15h 47m
English
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An Introduction to Digital Audio and Audio Devices
Sound waves are analog by nature, and as we know, analog signals aren't easily stored or manipulated by a computer system that stores and processes information digitally. Other devices, such as CD, DVD, and Blu-Ray players, also operate with digital audio.
Digital audio information is mainly derived from an analog audio wave by a process known as Pulse Code Modulation (PCM). PCM works by sampling or taking a measurement of the analog audio wave at fixed intervals. The number of measurements taken per second is known as the sample rate. Audio on a CD is sampled at 44.1 kHz. Other sources, such as HD video, may use 48 kHz, which means there are 48000 measurements of the audio wave performed per ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.