Audio By Design
Mary C. Gruszka is a systems design engineer, project manager, consultant and writer based in the New York metro area. She can be reached via
TV Technology.
Audio Breakthroughs with TEF Analysis
by Mary C. Gruszka, 01.27.2010
Before the TEF analyzer came along, one would need a shelf full of different and expensive instrumentation More...
AV Fingerprinting Helps Detect Lip-Sync Errors
by Mary C. Gruszka, 11.23.2009
Fingerprinting or correlation techniques involve comparing two signals, a reference source known to have no lip-sync error, and a second signal somewhere down the signal chain. More...
Updating Lip Sync Issues
by Mary C. Gruszka, 10.15.2009
If some friends invite you over to check out their favorite TV program on their new wide-screen flat-panel display, you may not want to mention how bad the lip sync is off. More...
Audio Consoles—The New and the Old
by Mary C. Gruszka, 07.22.2009
Are audio consoles obsolete in the age of digital audio workstations and computer audio editing programs? Not by a long shot. More...
Embedded Audio in a High-Def Video Signal
by Mary C. Gruszka, 06.22.2009
This month we'll wind up our series on the structure of AES audio with a discussion of embedded audio in a SMPTE 292M high-definition signal. More...
Embedded Audio for SD Component Video
by Mary C. Gruszka, 04.10.2009
As the AES3 digital audio standard allows for word lengths up to 24-bits as well as a variety of sampling rates, SMPTE 272M provides the means for embedding these signals. More...
Breaking Down Embedded Audio Part 1
by Mary C. Gruszka, 01.26.2009
It's said that nature abhors a void, so it didn't take long for other types of data to fill this space, digital audio being the most common. More...
Serial Multichannel Audio Digital Interface
by Mary C. Gruszka, 10.15.2008
So why not multiplex a bunch of AES3 channels together to make it easier to wire among studios, control rooms, and central equipment rooms for digital audio consoles and routing switchers, and between stage boxes and mixing More...
The Function of Channel Status
by Mary C. Gruszka, 08.20.2008
The channel status bits provide a wealth of information about its associated audio channel, which can be used by an AES receiver/decoder for subsequent processing. More...
Decoding Timeslots For AES3, Part 4
by Mary C. Gruszka, 06.25.2008
There are a few more parts of the AES3 bitstream that still need to be discussed—the timeslots for the digital audio signal, as well as the user and channel status bits. More...
Deconstructing Digital Audio Subframes, Part 3
by Mary C. Gruszka, 04.14.2008
The AES3 digital audio signal is composed of frames, with each frame containing a digital sample from each of two audio channels. More...
Unlocking the Mystery Of AES3 Digital Audio, Part 2
by Mary C. Gruszka, 04.02.2008
When bits are transmitted in sequence, there has to be a way for a receiver to recognize the value of each bit, know where each digital word (audio sample) starts and ends, and where to find and how to interpret any other types More...
Demystifying AES3 Digital Audio
by Mary C. Gruszka, 02.20.2008
We casually speak of digital audio, often referring to it as AES audio, perhaps AES3 (for the number of the AES standard), or by an older term AES/EBU. But what exactly is this AES3 signal? More...
The Sound of Love in ‘One Six Right’
by Mary C. Gruszka, 12.19.2007
“You can make a love story about anything, and in this case it’s a long piece of pavement in the middle of the San Fernando Valley in southern California that has the name ‘One Six Right.’ And for me the way to do that was to More...