DC Servos and Digitally-Controlled Microphone Preamplifiers
DC Servos and Digitally-Controlled Microphone Preamplifiers (509k)by Gary Hebert, CTO That CorporationAES Convention Paper 9198, 137th Convention, October 2014Microphone preamplifiers for professional audio applications require a very wide range of gain and low noise in order to provide a high-quality interface…
A Survey of Broadcast Television Perceived Relative Audio Levels
A Survey of Broadcast Television Perceived Relative Audio Levels (475k)By Matt Easley, Chris Hanna, Scott Skinner, Matt Barnhill, THAT CorporationAES Convention Paper 7896, 127th Convention, October, 2009Perceived television volume levels can vary dramatically as audio changes both within a given broadcast…
The 48 Volt Phantom Menace Returns
The 48 Volt Phantom Menace Returns (1,480k)By Rosalfonso Bortoni and Wayne Kirkwood, THAT CorporationAES Convention Paper 7909, 127th Convention, October, 2009In 2001, Hebert and Thomas presented a paper at the 110th AES Convention which described the “phantom menace” phenomenon wherein microphone…
Demystifying Analog Circuits in Professional Audio Applications
Demystifying Analog Circuits in Professional Audio Applications (286k)By Fred Floru, Principle Engineer, THAT CorporationAES Convention Paper 6455, 118th Convention, May, 2005The purpose of this paper is to look at a few popular analog circuits that have a direct impact on the…
A Flexible Compander IC for Wireless Microphone Applications
A Flexible Compander IC for Wireless Microphone Applications (281k)By Gary K. Hebert, THAT CorporationAES Convention Paper 6337, 118th Convention, May, 2005A new IC for implementing companding noise reduction in professional wireless microphone applications is described. Unlike existing devices designed primarily for…
New Balanced-Input IC Achieves Very High Dynamic Range In Real-World Systems
New Balanced-Input IC Achieves Very High Dynamic Range In Real-World Systems (381k)By Bill Whitlock, Jensen Transformers and Fred Floru, THAT CorporationAES Convention Paper 6261, 117th Convention, October, 2004A new integrated circuit (IC) is described that uses a patented topology to achieve…