Entries by Zarina

A New THD+N Algorithm for Measuring Today’s High Resolution Audio Systems

In this paper, a mathematical definition of Total Harmonic Distortion + Noise suitable for testing high-resolution digital audio systems is presented. This formal definition of the “distortion analyzer” mentioned in AES17 defines THD+N as the RMS error of fitting a sinusoid to a noisy and distorted sequence of measurements. We present the key theoretical result […]

Evaluation of audio test methods and measurements for end-of-line loudspeaker quality control

In order to minimize costly warranty repairs, loudspeaker OEMS impose tight specifications and a “total quality” requirement on their part suppliers. At the same time, they also require low prices. This makes it important for driver manufacturers and contract manufacturers to work with their OEM customers to define reasonable specifications and tolerances. They must understand […]

An Interview with Steve Temme

Author: Shannon Becker.  Reprinted from the March 2018 issue of Audio Xpress. Shannon Becker interviews Steve Temme about how he founded Listen, Inc. and grew it from a start-up into an audio measurement leader. Full Article

Practical Measurement of Bluetooth and Lightning Headphones

Author: Daniel Knighten.  Reprinted from the July 2017 issue of Voice Coil. In this article, Dan Knighten discusses how to overcome the challenges of measuring headphones with wireless and digital interfaces such as Bluetooth, Lightning and USB-C to make the same measurements as on conventional wired headphones. Full Article  

Smarter Measurements for Smart Speakers

Author: Daniel Knighten (Listen, Inc) and Glenn Hess (Indy Acoustic Research).  Reprinted from the March 2018 issue of Audio Xpress. In this article, we describe techniques to characterize the frequency response, output level, and distortion of the device under test to enable direct comparisons between Internet of Things (IoT) smart speakers and conventional speakers. Full […]

In-Vehicle Distortion Measurement

Authors: Zarina Bhimani, Steve F. Temme (Listen, Inc.), Patrick Dennis (Nissan Motor Co.).  Reprinted from the 2017 Loudspeaker Industry Sourcebook. Steve Temme and Patrick Dennis discuss their research exploring test methods that will help determine audible distortion and enable manufacturers to test sound equipment after it is installed Full Article    

New Software Manager: Rick Spada

Listen is excited to announce the appointment of Rick Spada to the position of Senior Software Manager. Rick holds both Bachelors and Masters degrees, and  has over 30 years’ experience in software development. Prior to joining Listen, Inc. he has worked in control systems and robotics, programmed software, and managed software development teams, most recently […]

Korea Headphone Seminar

Over 150 people attended the Listen, Inc./G.R.A.S. headphone seminar in Seoul on Tuesday March 6th, where Steve Temme, Peter Wulf-Andersen, Dr. Sean Olive and Prof. Lee spoke to a packed room about headphone measurement, perception and design and tuning. It was a great event and exciting to meet so many of Korea’s top audio design […]