Mary C. Gruszka
Latest articles by Mary C. Gruszka

Synchronizing Audio and Video
By Mary C. Gruszka published
The problem is that not everyone perceives lip sync errors in the same way.

Mobile Apps Making Field Measurements Easier
By Mary C. Gruszka published
It's truly amazing the extent of available measurement tools that literally fit in the palm of a hand.

The Importance of Speech Intelligibility
By Mary C. Gruszka published
Speech intelligibility isn’t just a concern for sound reinforcement or emergency evacuation systems.

AV Fingerprinting Helps Detect Lip-Sync Errors
By Mary C. Gruszka published
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.

Audio Breakthroughs with TEF Analysis
By Mary C. Gruszka published
Before the TEF analyzer came along, one would need a shelf full of different and expensive instrumentation

Exploring the Properties of Acoustical Materials
By Mary C. Gruszka published
When you think of an acoustical material, what comes to mind? Maybe some kind of dark gray foam glued to a wall? Perhaps orange shag carpeting?

Low-Frequency Sound And Room Acoustics
By Mary C. Gruszka published
Sound has dimension, and it's sometimes easy to forget just how big sound can be.

AES42: Updating the Standard for Digital Microphones
By Mary C. Gruszka published
At its core, the standard defines digital phantom power (DPP) for a microphone with built-in digital circuitry.

Ensuring Correct AV Sync
By Mary C. Gruszka published
Many processors, such as embedders or encoders, have internal delays, obviating the need for external ones.
CBS News Rolls Out New HD Room
By Mary C. Gruszka published
The new control room was designed to take in many more simultaneous feeds than before, accepting feeds arriving on fiber as data circuits or via satellite.
5.1 Audio for HD: YES Case Study, Part I
By Mary C. Gruszka published
When designing and building an HD facility, the video part can be relatively simple compared to audio.
Searching for a Surround Sound Audio Console
By Mary C. Gruszka published
With NAB2007 fast approaching, here are some tips to help in your search for a surround sound mixing system.
Who the Cap Fits
By Mary C. Gruszka published
Creating a next-generation EAS system involves not only technology but operational workflows, cross-agency cooperation, and not a small amount of politics. Nevertheless, the process has begun.
Demystifying AES3 Digital Audio
By Mary C. Gruszka published
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?

Decoding Timeslots For AES3, Part 4
By Mary C. Gruszka published
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.
Measuring the ASI Bitstream
By Mary C. Gruszka published
The importance of monitoring throughout the MPEG signal chain
TV Signals Used for Geo-Positioning
By Mary C. Gruszka published
Rosum technology uses TV RF as alternative to GPS
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