December, 2013

2013: The Year in Review

We’ve made through another year. It’s December 31, 2013…New Years Eve. It’s the end of the first year of this website and my daily posts. When I started RealHD-Audio.com back in April, I had faint hope [...]

The SRC Wrap Up: Part IV

As I’ve explained over the past three days, converting from one sample rate to another can be accomplished by passing through an analog stage, out of real time using clunky brute force methods and in real [...]

SRC: Software Conversion Part IV

In 1989, I started the Pacific Coast Sound Works in my garage in Chatsworth, California. It was a service company that specialized in recording, editing and mastering audio. I had already purchased Digidesign’s Sound Tools hardware [...]

Sample Rate Conversion Part III

Sample rate conversion can be done a number of different ways depending on the equipment that you have at your disposal. I’ll go through these methods next semester in my Advanced Audio Recording course…so pay close [...]

SRC: The Ups and Downs

You’re probably already familiar with the following PCM sample rates: 44.1, 48, 88.2, 96, 176.4 and 192 kHz. And you might even be aware of the latest addition to the “bigger is always better” sample rate [...]

Sample Rate Conversion: A Primer Part I

Digital systems are not continuously variable. They are comprised of a multitude of individual slices or data points that when systematically presented to a mechanism to reconstruct them, we get the original continuously variable signal back. [...]

Different Masters at 96 & 192 kHz?

The “Father and Son” tune from Cat Stevens’ “Tea For the Tillerman” reveals some additional issues with the new world of high-resolution digital transfers of recordings that were originally made using analog tape. I’ve already pointed [...]

Analog vs. Digital Clipping

Ideally, we want the acoustic energy produced by musicians to be captured, stored and reproduced with complete integrity. One of the definitions of fidelity is “the degree of exactness with which something is copied or reproduced”. [...]

Stepping Over the Line: Clipping

Audio recording is not like real life sound. Engineers are challenged to capture and process acoustic energy…sound waves… with an array of equipment such as microphones, preamplifiers, amplifiers, recorders and more. And unlike our ears, which [...]

Living With Clipping

This morning I stopped at SuperCuts after trying to get my cell phone replaced at the AT&T store. Got to be a clean cut adult during the Holiday season and I was due for a more [...]