Entries by Zarina

Triggered Record Using WAV File and 6 Mic Array

This sequence allows you to measure a playback system without analog inputs using a 6 microphone array. Specifically, the sequence is designed to measure an in-car audio system. A stimulus WAV file is created in SoundCheck and transferred to the device under test (DUT) where it is played back and the response captured by SoundCheck […]

New Support Engineer: Cam Ruffle-Deignan

Listen has expanded its support team with the addition of Cam Ruffle-Deignan. Cam has recently graduated with a BSME from the University of Vermont where he spent his time doing applied polymer research, playing intramural sports, and working in a student-run prototyping lab. He has a keen interest in audio products, having interned for Listen […]

New Operations Director: Eric Johnson

Listen has strengthened its infrastructure with the appointment of Eric Johnson to the role of Operations Director. In addition to internal administrative functions such as HR and facilities management, Eric manages the entire operations team including product supply and finance to ensure that all customer requirements are met efficiently and effectively. Eric has spent his […]

Seminar: Smarter Measurements for Smarter Speakers – Chicago and Boston

Smarter speakers require smarter test methods! Learn how to test smart speakers, robots, voice-controlled automotive audio and other IoT devices in our practical half-day seminar taught by industry experts Steve Temme, and Marc Marroquin of Listen, Inc. Although acoustic testing of smart speakers and other voice-activated devices presents challenges such as injecting and extracting response […]

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