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

/在： , /通过：

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

ISEAT- Shenzhen, China – Nov 14-15, 2015

/在： , /通过：

iseat_logoWe will be exhibiting at ISEAT in Shenzhen on Nov 14-15, 2105. 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 with Sean Olive entitled “The correlation between distortion audibility and listener preference in headphones.”

ISEAT web site

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

/在： , /通过：

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

Get a free AES Exhibit Hall pass

 

See Us at AES in LA Oct 2014

/在： , /通过：

AES LogoWe will be exhibiting and presenting a paper at the 137th AES which will be held at the Los Angeles Convention Center, Los Angeles, CA on Oct 9-12, 2014.

At our booth (#1525) we will be demonstrating the latest release of the SoundCheck software, as well as showcasing our entire audio test hardware lineup. 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.

Listen President, Steve Temme will co-present a paper with Dr. Sean Olive of Harman International. The paper, entitled ‘The Correlation Between Distortion Audibility and Listener Preference in Headphones’ attempts to define the relationship between objective testing using various distortion measurement techniques and listener preference. This paper will form part of the P4 – Transducers paper session on Thursday, October 9 from 2:30 – 5:30 pm.

China Tour – June 2014

/在： , /通过：

GRAS Production Line Acoustic Test ChamberListen’s Dan Knighten will be touring major cities in China as part of the 2014 S&V Samford seminar series on ElectroAcoustic Test Solutions for Smartphones/Tablets, Headphones/Earphones & Bluetooth Speakers.

This series of half-day seminars will cover measurement techniques and offer tips and tricks for achieving accurate and repeatable production line measurements

A new production line test system for testing smartphones and tablets, consisting of Listen’s SoundCheck software in conjunction with a the new GRAS production line acoustic test chamber will be presented. There is no charge to attend, but registration is required.

Tour dates:

June 16th Beijing
June 17th Suzhou
June 18th Shanghai
June 19th Shenzhen
June 20th Taipei

See Us at ALMA – Jan 2014

/在： , /通过：

almalogoListen will be exhibiting at the ALMA Winter Symposium at the Tuscany Hotel in Las Vegas on Jan 4-5 2014. The ALMA show, immediately before CES is a small conference focused on the Loudspeaker, headphone and microphone marketplace, with an excellent selection of training, papers and seminars from industry-leading experts. Listen will showcase its complete range of test hardware, demonstrate the soon-to-be-released SoundCheck 13 (see above) and invite you to participate in a headphone listening challenge.
Steve Temme will present a paper entitled ‘Advances in Impedance Measurement of Loudspeakers and Headphones’, which discusses a novel electrical circuit that offers single channel impedance measurements with similar accuracy to complex dual channel measurement methods, which is expected to become popular for high throughput production line measurement. Dan Knighten will present a tutorial entitled ‘A Practical approach to measuring MEMS microphones’. In this presentation, he will include a basic overview of MEMS microphones and their applications followed by practical demonstration of measurements.