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AES International Conference on Automotive Audio – Munich – September 11-13, 2019

Listen is a gold sponsor and exhibitor at the AES International Conference on Automotive Audio in Munich, Germany on September 11-13.

Listen founder and president, Steve Temme, will be presenting a tutorial on ‘Testing Voice-Controlled and Smartphone Integrated Infotainment Systems’ at 2pm on Sept 12th. In this tutorial he will discuss the challenges of implementing audio tests in cars when the signal path is often via a smartphone and/or the car’s own voice-controlled system, and demonstrate how modern test systems can use techniques such as frequency shift and resampling to enable accurate measurement of car audio characteristics ranging from simple frequency and distortion measurements to voice control and communications in the presence of background noise.

On display at the the booth will be various options for testing automotive audio including the SoundCheck test system, Listen’s own audio test hardware, and 3rd party hardware such as 6 microphone arrays and head and torso simulators. On the booth, Listen will also be demonstrating how SoundCheck fully integrates with, and controls, the Mentor A2B interface to enabled rapid automated testing of systems and components that use the A2B bus.

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ISEAT- Shenzhen, China – Nov 4-5, 2017

iseat_logoWe will be exhibiting at ISEAT in Shenzhen on Nov 4-5, 2107. On display will be our SoundCheck audio test system and associated hardware for testing a range of audio devices including speakers, microspeakers, headphones, microphones, smartphones, tablets and more.

Listen president, Steve Temme, will also be presenting a technical paper written with Viktor Dobos of Harman Automotive on production line loudspeaker measurements. In this paper, he addresses the different measurements that can be made at the end of a production line, and which ones offer comprehensive product QC while maintaining high speed and throughput.

ISEAT web site

AES Europe – Berlin May 20-23, 2017

AES LogoSteve Temme will be presenting a paper at AES Europe with Viktor Dobos of Harman entitled “Evaluation and recommendation of different audio test methods and measurements for end-of-the-line automotive speaker quality control”. In this paper they will discuss the loudspeaker characteristics that can be measured, and common measurement challenges and how to overcome them and how to avoid them, both on a loudspeaker production line as well as during installation into an automotive vehicle. Several different audio test methods and measurements for end-of-the-line automotive speaker quality control will be evaluated, and the most relevant ones identified. Speed, statistics, and full traceability are also discussed.

AES Show Web Site

AES, Los Angeles, CA, Sept 29- Oct 1, 2016

AES LogoWe will be exhibiting at the 141st AES which will be held at the Los Angeles Convention Center, LA, CA on Sept 29-Oct 1, 2016.

At our booth (#717) we will be demonstrating SoundCheck 15, our latest release, as well as our lineup of audio test hardware. We will be demonstrating a comprehensive Bluetooth headphone test using SoundCheck with the BTC4148 Bluetooth interface and the Brüel and Kjær Head and Torso Simulator.

Steve Temme, along with Patrick Dennis of Nissan, will be presenting a technical paper entitled “In-Vehicle Audio System Distortion Audibility versus Level and Its Impact on Perceived Sound Quality” This paper will take place Friday Sept 30th at 3.15pm in the “P15 Perception” paper session. In this paper, the authors consider the level of distortion as in-vehicle audio system output level increases, and evaluate the level at which distortion audible is audible. Both subjective and objective measurements of sound quality are made, and the correlation between perceived sound quality and objective distortion measurements is discussed.

AES Show Web Site

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CanJam SoCal March 19-20, 2016

canjam_socal_logoListen, Inc. will be exhibiting alongside Brüel and Kjær at CanJam SoCal on March 19-20, 2016. This specialist headphone and personal audio expo is produced by Head-Fi.org, the world’s largest website for headphone and personal audio enthusiasts. Listen will be demonstrating objective headphone testing using the industry standard headphone test and measurement system, SoundCheck, alongside hardware from Listen and a head and torso simulator from Brüel and Kjær. Please stop by the booth if you are visiting!

CanJam Website

 

ALMA Symposium & Expo, Las Vegas NV, Jan 3-4 2016

ALMA AISE logoAt AISE, the ALMA International Symposium and Expo (Jan 3-4 at the Tuscany, Las Vegas), Listen demonstrated its range of audio measurement hardware and software, including the new SoundCheck 14.1 for Mac, the first commercial audio measurement system that runs natively on Mac OS. Also on show was the company’s entire hardware lineup including the AmpConnect ISC all-in-one audio interface, along with test microphones, microphone power supplies, audio amplifiers, and various interfaces for testing Bluetooth, MEMS and other audio devices.

Steve Temme presented a paper entitled “Headphone Response: Target Equalization Trade-offs and Limitations” which discussed the effects of headphone response and equalization with respect to the influence on perceived sound quality (co-written with Chris Struck of CJS Labs).

He also presented a tutorial on the challenges of measuring high resolution audio. In this presentation he discussed the correlation of hearing and measurement at high frequencies, and the challenges of measuring out to, and beyond 20kHz. He also discussed the trade-offs in performance, such as audible intermodulation distortion. Steve also participated in the panel discussion on high-res audio.

Les Quindipan, a recent addition to the Listen team, presented a session on How to Measure Bluetooth Speakers and Headphones. In this demonstration, Bluetooth speakers and headphones were tested using a Listen SoundCheck system with the Portland Tool & Die BTC-4148 Bluetooth interface. Frequency response and distortion measurements were compared on the same speaker with both Bluetooth and wired stimuli, and he demonstrated how the BTC-4148 is paired and controlled via message steps in SoundCheck for simple test development and implementation. Sequences were also created and modified for other Bluetooth-specific test applications such as headphones and headsets.

ALMA Symposium and Expo Web Site

 

Steve Temme presenting at AISE

Panel Discussion on Hi-Res Audio

Panel Discussion on Hi-Res Audio

 

 

 

 

 

 

 

 

Photos courtesy AudioXPress

AES, New York, NY, Oct 29-Nov 1 2015

AES LogoWe will be exhibiting at the 139th AES which will be held at the Javits Center, New York, NY on Oct 29-Nov 1, 2015.

At our booth (#242) we will be demonstrating the latest release of the SoundCheck software, version 14,  and the new SoundCheck 14.1 for Mac, as well as showcasing our entire audio test hardware lineup including the new AudioConnect audio interface and BTC-4148 bluetooth interface. We will be demonstrating how you can test virtually any type of audio or audio electronic device with the SoundCheck test system, and showing off some of the latest features of our software.

Steve Temme will also be co-presenting a paper entitled ‘Headphone Response: Target Equalization Trade-offs and Limitations’ with Christopher Struck of CJS Labs. This paper is first up in the P4-1 session (Transducers, Part 1) at 2.30pm on October 29th. In this paper, the effects of headphone response and equalization are examined with respect to the influence on perceived sound quality. Free field, diffuse field, and hybrid real sound field targets are shown and objective response data for a number of commercially available headphones are studied and compared. Irregular responses are examined to determine the source of response anomalies, whether these can successfully be equalized and what the limitations are. The goal is to develop a robust process for evaluating and appropriately equalizing headphone responses to a psychoacoustically valid target and to understand the constraints.

AES Show Web Site

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