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About Stuart Yaniger

Stuart Yaniger has been designing and building audio equipment for nearly half a century, and currently runs a technology consulting agency in western New York. His professional research interests have spanned theoretical physics, electronics, chemistry, spectroscopy, aerospace, biology, and sensory science. One day, he will figure out what he would like to be when he grows up.

All items written by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 6) - Measurement Examples

May 17, 2017 by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 6) - Measurement Examples

Stuart Yaniger continues to examine ways to create a low-cost system for lab-grade audio electronics measurements. In this article, a few measurement examples are used to illustrate the power and the versatility of sound-card-based measurements. To illustrate the usefulness of measurements in the design process, Yaniger also explores the effects of load on power supply noise for a common IC regulator circuit. This article was originally published in audioXpress, November 2015.

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 5) - The User

May 10, 2017 by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 5) - The User

In this article series, Stuart Yaniger examines ways to create a low-cost system for lab-grade audio electronics measurements. The first four articles in the series looked at the hardware and software bits of the sound-card based measurement system. The last remaining piece is the user and the need to choose the right measurement parameters. This article was originally published in audioXpress, October 2015.

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 4)

May 3, 2017 by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 4)

In this article series, Stuart Yaniger examines ways to create a low-cost system for lab-grade audio electronics measurements. The pieces of a powerful modern measurement system comprise a sound card, software, and a signal conditioning interface and, of course, the right computer. In this fourth article in the series, the author looks at selecting the right interface. This article was originally published in audioXpress, September 2015.

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 3)

April 26, 2017 by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 3)

In this article series, Stuart Yaniger examines ways to create a low-cost system for lab-grade audio electronics measurements. The pieces of a powerful modern measurement system comprise a sound card, software, and a signal conditioning interface and, of course, the right computer. That’s where Yaniger delves in this third part, also sharing some of his first findings on available software. This article was originally published in audioXpress, August 2015.

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 2)

April 19, 2017 by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements (Part 2)

In this article series, Stuart Yaniger looks at some of the available options and methods to create a low-cost system (emphasis on “low-cost”) for lab-grade audio electronics measurements and provides some examples. In this second part, Yaniger starts by examining sound card requirements and the criteria to decide what features to look for in a sound card targeted for audio measurement. This article was originally published in audioXpress, July 2015.

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements

April 13, 2017 by Stuart Yaniger

Practical Test & Measurement: Sound Cards for Data Acquisition in Audio Measurements

Part 1 of an article series that looks at some of the available options and methods to create a low-cost system (emphasis on “low-cost”) for lab-grade audio electronics measurements. Focusing on solutions within easy reach of budget-conscience hobbyists, the goal is to demonstrate how you can generate useful data, similar to the graphs and charts in the audio review magazines, but without the expense. A great test and measurement article series by Stuart Yaniger, which started to be originally published in audioXpress, June 2015.

Fresh From The Bench: Audio Precision APx1701 Transducer Interface

April 5, 2017 by Stuart Yaniger

Fresh From The Bench: Audio Precision APx1701 Transducer Interface

audioXpress March 2017 featured a thorough review by Stuart Yaniger of Audio Precision’s new APx1701 Transducer Interface. This compact solution, when combined with an APx500-series analyzer, creates a test center suitable for measuring speakers, headphones, and microphones, as well as electronics. As Stuart Yaniger finds out, the combination of the APx1701, an APx515 and APx500 software, provides an extremely comprehensive and convenient multi-functional measurement test center.

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Fresh From the Bench: Measurement Microphones from PCB Piezotronics

March 7, 2017 by Stuart Yaniger

Fresh From the Bench: Measurement Microphones from PCB Piezotronics

Stuart Yaniger reviews a complete series of professional-grade measurement microphones from PCB Piezotronics, specifically, the 378A04 free-field microphone, the 378B02 free-field microphone, the 378A21 diffuse-field microphone, and the 130E20 array microphone. This article was originally published in audioXpress, December 2016.

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R&D Stories: QSC’s FAST Platform

October 5, 2016 by Stuart Yaniger

R&D Stories: QSC’s FAST Platform

November 2013 was the first issue of the redesigned audioXpress in its current form, featuring several new sections, including the first of its R&D Stories series, focusing on engineering and product development - independently of the audio application field. This article by Stuart Yaniger on QSC’s Flexible Amplifier Summing Technology (FAST) was a reference for many to follow.

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The ImPasse Preamplifier

February 6, 2016 by Stuart Yaniger

The ImPasse Preamplifier

Stuart Yaniger wrote a great article for audioXpress in February 2009, The ImPasse Preamplifier, describing a tube preamp to drive a pair of Nelson Pass’ First Watt F4’s (or other low-to-unity-gain power amplifiers) in balanced mono. Yaniger’s preamp is truly an elegant design with very, very low distortion, using a 6SN7 to drive a 6922 in balanced mode. There are LED’s, NE2H neon lamps and depletion MOSFETs in the design.

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