All items tagged with HATS (15)

Discover the Best Car Audio Experiences with audioXpress June 2025

May 12, 2025 by audioXpress Staff

Discover the Best Car Audio Experiences with audioXpress June 2025

The June issue of audioXpress focuses on Automotive Audio and features an in-depth report by Roger Shively and J. Martins, plus articles from Jacob Soendergaard and Jesse Gratke (HEAD acoustics), Paul Beckmann and John Whitecar (DSP Concepts), Alexander Goldin (Alango Technologies), and Steve Temme (Listen). On other topics, Eric Carmichel describes an occluded ear simulator (OES) test solution, and Simon Ashton (AudioSmile) offers the technical details of his Little British Monitor (LBM).

Inside the Audio Lab: How Apple Developed Its Hearing Health Experience

October 28, 2024 by audioXpress Staff

Inside the Audio Lab: How Apple Developed Its Hearing Health Experience

Apple owns multiple R&D centers spread across the globe, some of which include state-of-the-art anechoic chambers and advanced acoustic simulation rooms. Apple’s state-of-the-art Audio Lab in Cupertino, California, is the hub for the design, measurement, tuning, and validation of all of Apple’s products with speakers or microphones. It’s also the center for Apple's multiyear, cross-team collaboration that enabled the new hearing health features on AirPods Pro 2.

Electrostatic Loudspeakers and Two Cutting-Edge High-End Tweeters in Voice Coil June 2023

May 31, 2023 by audioXpress Staff

Electrostatic Loudspeakers and Two Cutting-Edge High-End Tweeters in Voice Coil June 2023

Voice Coil June 2023 features an extensive patent review in James Croft's Acoustic Patents column. The topic is a 2014 patent awarded to Nokia, offering an opportunity to revisit the history of electrostatic loudspeakers, with insights from Tim Mellow, one of the two listed inventors. In Test Bench, Vance Dickason focuses on the D8404-552000 Ellipticor cloth diaphragm dome midrange from Scan-Speak, and characterizes the SB Acoustics TW29BNWG beryllium dome and waveguide from the brand's prestigious Satori line.

Practical Test & Measurement: The Benefits of Using Structure-Borne Sound in Headset Signal Processing

January 18, 2023 by Hans W. Gierlich

Practical Test & Measurement: The Benefits of Using Structure-Borne Sound in Headset Signal Processing

This article looks at the practical test and measurement of bone conduction technology, as used in product development for headsets and in-ear devices. It showcases new possibilities for manufacturers to better evaluate device performance, since no appropriate test equipment and methods were commercially available until now. The approach, complements a Head-and-Torso Simulator (HATS) with an actuator capable of generating structure-borne sound in the artificial ear. This way, a realistic simulation of the human structure-borne voice signal for in-ear headsets is possible.. This article was originally published in audioXpress, January 2023.

HEAD acoustics Increases Audio Measurement and Analysis Flexibility with ACQUA 5.0.100 Software

January 17, 2022 by Joao Martins

HEAD acoustics Increases Audio Measurement and Analysis Flexibility with ACQUA 5.0.100 Software

ACQUA 5.0.100 is the first iteration of the new generation of the well-established measurement and analysis software ACQUA from HEAD acoustics. ACQUA's significantly reworked software structure provides even greater flexibility for voice and audio quality evaluation, while paving the way for future expansions. Designed for the requirements in applications as diverse as communication systems, Bluetooth, ANC headphones, or smart speakers, ACQUA now supports faster hardware configuration, perceived loudness analysis, and MDAQS audio quality evaluation.

HBK Electroacoustics Conference 2021 - September 28-29

August 30, 2021 by Special Content

HBK Electroacoustics Conference 2021 - September 28-29

The Electroacoustics Conference offers presentations from HBK experts and industry professionals highlighting the work that has been done to develop new tools, products and methods to evaluate future products. Two days of knowledge about DSP, Physics and Human Perception, Simulation, DIY ElectroAcoustic Programming and Test Services, Electroacoustic Applications, Ear Simulators, HATS Technologies and Non-Contact Transducers and more.

High-Frequency Head and Torso Simulator (HATS) – Why?

April 2, 2020 by Special Content

High-Frequency Head and Torso Simulator (HATS) – Why?

The world of communication and entertainment is evolving and consumer expectations for audio quality continue to increase, and with it the requirements for improved test equipment that can accurately predict the perception of human hearing and speech. A head and torso simulator (HATS) is an objective measurement instrument with built-in, human-like ear and mouth simulators that provides a realistic reproduction of the acoustic properties of an average adult human.

Accurate High-Frequency Headphone Testing Right on Your Desk

March 1, 2020 by Special Content

Accurate High-Frequency Headphone Testing Right on Your Desk

Building on the success of the High-frequency Head and Torso Simulator Type 5128 – and by popular demand – Brüel & Kjær has released a new tabletop HATS version, Type 5128-B to support customers looking to test headphones right on their desk or in small anechoic chambers. Tabletop HATS is a torso-less head that is supported on a foot. Its adjustable neck makes it suitable for testing all types of headphones, and it can be used free standing on a desk, fitted on a tripod or on a turntable using a tripod mounting adapter. The head geometry complies with ITU-T Rec. P.58, IEC 60318-7 and ANSI S3.36-1985.

Brüel & Kjær Recommendations for Smart Speaker Testing

February 3, 2020 by audioXpress Staff

Brüel & Kjær Recommendations for Smart Speaker Testing

Brüel & Kjær Sound & Vibration Measurement is promoting a set of recommendations for smart speaker testing, putting focus on the importance of realistic testing when developing and incorporating voice recognition functionalities into consumer products. The Danish sound and vibration specialist recommends the use of its high-frequency HATS Type 5218 and Mouth Simulator Type 4227 systems with human voice characteristics for realistic speech and sound testing of voice-operated devices.

Electroacoustic Measurements of Headphones

September 11, 2019 by Christopher J. Struck

Electroacoustic Measurements of Headphones

Christopher J. Struck (CJS Labs) discusses all options available for headphone testing and calibration. The article discusses what should be included in a complete headphone test system, considerations on electrical impedance, considerations on repeatability of the results, free and diffuse field corrected responses, left-right tracking, and the use of two-tone distortion measurements. Reference reading material. This article was originally published in Voice Coil, July 2019.

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