Events
Upcoming Events
ALTI Expo 22
Come and see us at ALTI Expo 2022 in Las Vegas, June 5-6. We’ll be exhibiting SoundCheck 20, the latest release of our popular audio measurement software, as well as AmpConnect 621, our new multichannel hardware interface. Company founder and president, Steve Temme will present a paper on our new enhanced Perceptual Rub & Buzz algorithm, and Sales Manager Les Quindipan will introduce the new features of Soundcheck 20, as well as participate in the speaker builders workshop event.
AES 2022 International Automotive Audio Conference
We’ll be attending and exhibiting at the AES International Automotive Conference in Detroit, June 8-10. Stop by and visit our booth to learn more about the latest version of SoundCheck, including a host of new features designed for multichannel and communications testing, as well as the new enhanced perceptual Rub & Buzz algorithm. Listen founder and president, Steve Temme, will be presenting a paper on June 8th (paper session 1, 10.30 am) detailing this new algorithm, and will also participate in a panel discussion on Max SPL measurement in cars at 4.00pm on June 9th.
The Future of Audio Measurements – SoundHub Denmark
Weds May 25th, 8.30-12.30
Presenters: Steve Temme, Listen Inc.; Michael Trolle, VibrAkustik
Join us at SoundHub in Struer for a great day of presentations and discussion on the latest in audio measurement. The presentations will cover a variety of audio test topics including the end of line testing for improved efficiency and yield, measurement in real-world conditions, free-field measurements without a test chamber and more. There will also be consultation time when we are happy to answer your questions or discuss any aspect of audio test. This event is highly relevant for anyone needing to test audio products, both in R&D and production.
Schedule
8.30-9.00: Check-in, coffee & Welcome by VibrAkustik & Sound Hub Denmark (Michael Trolle and Rie Kold Pripsø)
9.00-9.30: Perceptual distortion measurements
9.30-10.00: Accurate measurement of headphones and hearing assistance devices under real world conditions
10.00-10.30: Coffee and discussion time
10.30-11.00: New features in SoundCheck version 20
11.00-11.30: Free-field speaker measurements without an anechoic chamber
11.30-12.30: Consultation time: Bring us your audio devices and your measurement challenges and we’ll discuss your measurement options and demonstrate how your devices can be measured
Note: there will be live demonstrations on all topics, and a display of hardware for a complete measurement chain including fixtures, measurement microphones and sensors, audio interfaces and turntable.
Detailed Content Information
Perceptual Distortion Measurements: Perceptual distortion measurements enable production line yield to be increased by rejecting only devices with audible Rub & Buzz defects rather than any distortion defects, and Listen’s new enhanced Perceptual Rub & Buzz (ePRB) algorithm is the first to perform even better than the human ear! Through proprietary noise reduction technology and advanced perceptual algorithms, its performance in a noisy factory environment is comparable to the performance of a trained listener under normal listening conditions. Learn more about the science behind this algorithm, see the results, and learn how to implement it in your end-of-line tests.
Accurate Headphone Measurements in Real World Conditions: In this demo-focused session, we will demonstrate how to accurately measure Headphones and Hearing Assistance Devices under real world conditions with real world signals such as speech and music. For example, we will demonstrate, in real time, how to adjust the headphone fit for a proper seal on the head and torso simulator and measure headphone ANC with real background noise with our Multi Signal Real Time Analyzer
New Features in SoundCheck: The newly released SoundCheck 20 is at the forefront of audio measurement with new features for multichannel and communications, increasing its capabilities for audio measurement of smart speakers, infotainment systems, headphones and hearables, and other voice-activated and multichannel devices. In this 30 minute session, we will demonstrate the new features and explain how they are used for testing a variety of audio products and applications.
Free-field Speaker Measurements without an anechoic chamber: Can’t afford or get time in an anechoic chamber? That’s not a problem if you have SoundCheck! In this practical session, we will demonstrate a method first developed by Listen president Steve Temme back in 1993, known as the ‘splice’ technique. This measurement technique is easy to configure and enables you to make highly accurate free-field measurements in an ordinary room, avoiding the expense of an anechoic chamber and enabling measurements in your home or office.
Production Testing Seminar China / 产線测试网络研讨会
May 18th 2022. 10am (China Time) / 2022年5月18日上午10点（中国时间）
In this short seminar, Les Quindipan explores the use of SoundCheck for end-of-line production testing. He discusses typical test configurations and the type of measurements that can be made, how to set pass/fail limits and how to optimize tests for high throughput.
He will also explain how SoundCheck is easily scaled for high volume production testing, with such features as external control via another program and auto-saving data to databases, and how SoundCheck’s capabilities are easily expanded through the use of custom steps to control all types of devices and test fixtures.
This seminar will be of interest to anyone considering a production line implementation of SoundCheck, or curious as to how to transition R&D measurements to fast and effective end-of-line test.
There is no charge for this seminar, but registration is required.
在这个简短的研讨会中，Les Quindipan将 与我们探讨如何使用 SoundCheck 进行生产线末端测试。 他会讨论典型的测试配置和可以进行的测量类型、如何设置通过/失败限制以及如何优化测试以实现高吞吐量。
他还会探讨SoundCheck 如何轻松扩展以进行大批量生产测试，具有通过另一个程序进行外部控制和自动将数据保存到数据库等功能，以及如何通过使用自定义步骤轻松扩展 SoundCheck 的功能来控制所有类型的 设备和测试夹具。
任何考虑在生产线中使用 SoundCheck 的人士，或想知道如何将研发测量转换为快速有效的生产线末端测试的人士都会对此研讨会感兴趣。
本次研讨会不收取任何费用，但需要预先登记。
Register for Seminar / 登记参加研讨会
Enhanced Perceptual Rub & Buzz Event – Asia Edition
March 24, 2022. 10:00am China time
Listen continues to lead the way in perceptual distortion measurements with our new Enhanced Perceptual Rub & Buzz algorithm. This new product, based on years of original research, offers unrivaled repeatability, reliability and correlation to human hearing, making it an unbeatable solution for end-of-line perceptual audio test.
Our launch event will include live demonstrations, results, technical explanations and more. Be the first to know. Sign up below.
Listen 凭着新的增强型感知摩擦音算法(Enhanced Perceptual Rub & Buzz algorithm)继续引领著感知失真測量。這種基於多年原始研究的新產品提供了無與倫比的可重複性、可靠性和与人类听觉的相关性，使它成為生產線末端感知音頻測試的無與倫比的解決方案。
我們的發布活動將包括現場演示、結果、技術解釋等。 成為第一個知道最新資訊的人。 请在下面登记。
Virtual Instruments Seminar
April 12th, 2022. 9.00am and 2.00pm Eastern US time (6.00am and 11.00am West Coast time)
Virtual instruments, included in SoundCheck, are a cost-effective and portable software-based alternative to hardware instrumentation, ideal for making quick measurements or viewing device behavior in real time. In this educational seminar, Les Quindipan walks through a demonstration of the virtual instruments in SoundCheck, showing off some of their lesser-known capabilities. These include the signal generator, multimeter, oscilloscope/spectrum analyzer, real time analyzer, frequency counter and distortion analyzer. The strip chart recorder, which expands the capability of these instruments to record measurements over a period of time, will also be discussed.
Note: We will be repeating this seminar in conjunction with our exclusive distributor in China, S&V Samford. A sign-up link will be available shortly.
SoundCheck Online Basic Training, April 2022
Registration is now open for our Online SoundCheck Basic Training class from April 19th-28th.
The course will again consist of 6 x 2-hour sessions over a 2 week time period, and will cover all the same content as our standard in-person basic training course. Each session is led by a live trainer and will include instruction, demos, quizzes, breakout sessions and discussion. Hands-on exercises will be provided to be completed between sessions and reviewed in subsequent classes
We are restricting attendance to 30 attendees to better facilitate breakout sessions, so sign up early to secure your spot. Registration closes on April 8th, and a 5% early booking discount will apply to all registrations received by March 18th.
Dates: April 19th, 20th, 21st, 26th, 27th 28th.
Time: 6 x 2hr sessions from 11.00am-1.00pm Eastern US Time (8.00am-10.00am Western US Time)
Attendees must attend all 6 sessions to complete the course.
Cost: $295 ($195 for support contract holders). Additional discounts for multiple people from the same company signing up together (2-3 people: 10%; 4 people: 15%; 5+ people: 25%). Additional 5% early bird discount when signing up prior to March 18th.
Instructors: Mark Latshaw and Pranav Swaroop
Course Outline
Session 1: Hardware & Calibration – configuring audio interfaces and external equipment; certified audio interfaces; Calibration of different DUT types (telephones, speakers, etc.)
Session 2: Memory list, Data management, Virtual Instruments (Spectrum Analyzer, RTA, Multi-meter, Signal Generator, Oscilloscope), Sequence Editor Basics
Session 3: Sequence Writing Part 1 – introduction to the sequence wizard; stimulus; acquisition; basic analysis; limits
Session 4: Sequence Writing Part 2 – Displays; Autosave; Recall; Printing
Session 5: Sequence Writing Part 3 – Messages & sequence logic; external control; sequence & step parameters
Session 6: Advanced Sequence Development – Post Processing; Statistics
Registration is now CLOSED as we are past the date by which we can send out necessary equipment for use during the training. Late sign-ups will only be accepted from users who have an up-to-date, reasonably fully-functioned SoundCheck system available to use for the training. Please contact your sales engineer for advice and to request a sign-up link.
New Product Launch Event: Enhanced Perceptual Rub & Buzz (ePRB)
March 16, 2022. 1:00pm EST (10:00am West Coast)
Listen continues to lead the way in perceptual distortion measurements with our new Enhanced Perceptual Rub & Buzz algorithm. This new product, based on years of original research, offers unrivaled repeatability, reliability and correlation to human hearing, making it an unbeatable solution for end-of-line perceptual audio test.
Our launch event will include live demonstrations, results, technical explanations and more. Be the first to know. Sign up below.
Past Events
Basic Loudspeaker Measurement Seminar
Sept 30th, 2021. 9.00am and 2.00pm Eastern US time (6.00am and 11.00am West Coast time)
Join Les Quindipan and Anastassia Tolpygo on Sept 30th for a seminar on basic loudspeaker testing. This introductory seminar is aimed at anyone new to audio measurement, specifically loudspeaker testing. It will begin with an introduction to the basic design of a loudspeaker, including how a typical loudspeaker works. Various loudspeaker measurements will be explained, such as frequency response, distortion, sensitivity, phase/polarity and impedance, and how they might offer indications as to potential defects in a speaker. Typical test configurations for both R&D and end-of-line production test will be shown. A complete speaker test will be demonstrated, using SoundCheck and our free Loudspeaker complete test sequence. This will include setting up software and hardware, calibrating and configuring the test (e.g. setting pass/fail limits) and a discussion of the results. There is no charge for this seminar, but registration is required.
Note: We will be repeating this seminar in conjunction with our exclusive distributor in China, S&V Samford, on Oct 13th. Register for the China seminar if this timing suits you better or you prefer the slides translated into Chinese.
This event has already taken place. Check out our Youtube Channel for the recording.
Basic Loudspeaker Measurement Seminar (China) / 扬声器测试基础篇
Oct 13th, 2021. 10.00am China Time / 2021 年 10 月 13 日上午 10 点（中国时间）
Join Les Quindipan and Anastassia Tolpygo on Oct 13th for a seminar on basic loudspeaker testing. This introductory seminar is aimed at anyone new to audio measurement, specifically loudspeaker testing. It will begin with an introduction to the basic design of a loudspeaker, including how a typical loudspeaker works. Various loudspeaker measurements will be explained, such as frequency response, distortion, sensitivity, phase/polarity and impedance, and how they might offer indications as to potential defects in a speaker. Typical test configurations for both R&D and end-of-line production test will be shown. A complete speaker test will be demonstrated, using SoundCheck and our free Loudspeaker complete test sequence. This will include setting up software and hardware, calibrating and configuring the test (e.g. setting pass/fail limits) and a discussion of the results. There is no charge for this seminar, but registration is required.
于10 月 13 日加入Les Quindipan 和 Anastassia Tolpygo主持的有关基础扬声器测试的研讨会吧。
此研讨会目的是向任何不熟悉音频测量的人介绍一下音频测量, 特别是扬声器测试。在研讨会中,首先会介绍扬声器的基本设计, 包括典型扬声器的工作原理。并将解释各种扬声器测量，例如频率响应、失真、灵敏度、相位/极性和阻抗, 以及扬声器测试如何提供有关扬声器潜在缺陷的指示。研讨会将展示用于研发和下线生产测试的典型测试配置。
在研讨会中将演示完整的扬声器测试。使用 SoundCheck 和我们免费的扬声器完整测试程序。这将包括设置软件和硬件、校准和配置测试（例如设置通过/失败限制）以及对结果的讨论。本次研讨会不收取任何费用，但需要预先报名。
This event has already taken place. Check out our Youtube Channel for the recording.
Basic Soundcheck Training Online – Oct/Nov 2021
SoundCheck Basic Training is in an all-new online format for 2021. We have taken the material from our popular 2-day Basic SoundCheck training course and re-formatted it into 6 x 2 hr online sessions. Each session, led by a live trainer, will include instruction, demos, quizzes, breakout sessions and discussion. Hands-on exercises will be provided to be completed between sessions and reviewed in subsequent classes.
Dates: Oct 25th, 26th, 27th and Nov 1st, 2nd, 3rd
Time: 6 x 2hr sessions from 11.00am-1.00pm Eastern US Time (8.00am-10.00am Western US Time)
Attendees must attend all 6 sessions to complete the course.
Cost: $295 ($195 for support contract holders). Additional discounts for multiple people from the same company signing up together (2-3 people: 10%; 4 people: 15%; 5+ people: 25%).
Instructors: Mark Latshaw and Cam Ruffle-Deignan
Course Outline
Session 1: Hardware & Calibration – configuring audio interfaces and external equipment; certified audio interfaces; Calibration of different DUT types (telephones, speakers, etc.)
Session 2: Memory list, Data management, Virtual Instruments (Spectrum Analyzer, RTA, Multi-meter, Signal Generator, Oscilloscope), Sequence Editor Basics
Session 3: Sequence Writing Part 1 – introduction to the sequence wizard; stimulus; acquisition; basic analysis; limits
Session 4: Sequence Writing Part 2 – Displays; Autosave; Recall; Printing
Session 5: Sequence Writing Part 3 – Messages & sequence logic; external control; sequence & step parameters
Session 6: Advanced Sequence Development – Post Processing; Statistics
Thank you to all who attended. Please contact support@listeninc.com if you have any follow-up questions.
蓝牙音频测试 / Bluetooth Testing Seminar
June 3rd 2021. 10am (China Time)
This seminar has now passed, but you can watch the video.
In this 1hr online seminar, S&V Samford presents Les Quindipan of Listen, Inc. and Kristopher Hett of Portland Tool & Die demonstrating how to test Bluetooth devices.
Kris Hett will introduce the Portland Tool & Die Bluetooth interfaces that are used to connect the device under test to the measurement system. He will discuss the technical specifications, and explain the differences between these and other types of Bluetooth interfaces. Les Quindipan will then demonstrate how these have been fully integrated into SoundCheck for simple plug and play operation, and how they can be used in test sequences. He will also highlight some of the algorithms included in SoundCheck that overcome Bluetooth-induced time delays, thus enabling these devices to be tested in a similar way to their wired counterparts. A complete test on a Bluetooth speaker and a Bluetooth Headset will be demonstrated.
There is no charge for this seminar, but registration is required.
2021年6月3日，上午10点（中国时间）
在这1小时的在线研讨会中，声振环保仪器有限公司, Listen,Inc. 的Les Quindipan以及Portland Tool＆Die的Kristopher Hett，会向大家演示如何测试蓝牙设备。
届时Kris Hett会介绍Portland Tool＆Die蓝牙接口，该接口用于连接戴测试至测量系统。他将会讨论技术规范，并解释这些和其他类型的蓝牙接口之间的区别。
Les Quindipan将演示如何将它们完全集成到SoundCheck中以进行简单即插即用的操作，以及如何将它们用于测试程序中。他还会重点介绍SoundCheck的一些算法，这些算法可以克服蓝牙引起的时间延迟，从而使这些设备能够使用与有线等同类产品类似的方式进行测试。除此之外还会演示蓝牙扬声器和蓝牙耳机的完整测试。
该研讨会不收取任何费用，但需要注册。
20-20kHz Free Field Measurements Without an Anechoic Chamber
This event has now passed, but you can view the video recording here.
In this online seminar, Steve Temme explains how to use simulated free field measurements to provide accurate free-field measurements across the entire audible frequency range without an anechoic chamber. This enables measurements that would usually be made in an anechoic chamber to be made in a regular lab or even home office – a valuable capability when so many are currently working from home.
This measurement method, which has been available in SoundCheck since 2001, measures the near-field response at low frequencies and the time-windowed far-field measurement at higher frequencies, and splices them together to provide the response over the entire frequency range.
In this seminar we will explain the acoustics and mathematics behind this method, demonstrate the test procedure with the pre-written (and available free of charge) SoundCheck test sequence, and show how the results correlate to measurements made in an anechoic chamber.
There is no charge for this seminar, but registration is required.
Advanced Microphone Measurement Seminar
In this pair of 60 minute online seminars, Listen’s Support Manager, Steve Tatarunis, discusses some of the more advanced aspects of microphone testing including:
Part 1: Presented on Feb 18, 2021. View Recording.
- Substitution, Equalized Source and Transfer Function sequences in SoundCheck, including how to calibrate for these measurements. This is an expansion of material covered in the ‘basic microphone testing webinar’ and include more details about the sequences and calibration and the trade-offs of each method.
- Advanced measurements including polar plot, self-noise, signal to noise, distortion, active/passive noise rejection
Part 2: Presented on Mar18, 2021. View Recording.
- Phase
- Open loop microphone testing for voice activated devices such as smart speakers, automotive audio etc.
- Advanced hardware and test configurations for measuring microphone arrays and MEMS devices
Advanced Headphone Measurement Seminar
November 19, 2020. 9 am and 2pm Eastern time.
Low cost production headphone test system
In this 60 minute online seminar, Listen, Inc.’s founder and president, Steve Temme discusses Advanced Headphone Measurements.
He will discuss recent developments in headphone technology and how to measure accordingly, including:
- Measurement Standards e.g. IEC 60268-7
- Measuring USB and Bluetooth headsets including True Wireless Stereo (TWS) headphones/headsets
- Measuring headphone and headset microphones (including Send performance)
- Measuring Active Noise Cancellation (ANC)
- Voice activation and Open Loop measurements
- Distortion measurement methods including Non-coherent Distortion
- Measurement considerations for AR & Hi-Res
There is no charge for this seminar, but registration is required.
This event has now passed, but you can watch the recording on Youtube:
Advanced Headphone Measurement
October 22, 2020. 10am China time
Low cost production headphone test system
In this 60 minute online seminar, S&V Samford presents Listen, Inc. founder and president, Steve Temme discussing Advanced Headphone Measurements.
Listen, Inc’s SoundCheck electroacoustic test system has always been a popular system for testing headphones, and is used on hundreds of production lines in China as well as R&D labs worldwide. In this online seminar, we will discuss recent developments in headphone technology and how to measure accordingly, including:
- Measurement Standards e.g. IEC 60268-7
- Measuring USB and Bluetooth headsets including True Wireless Stereo (TWS) headphones/headsets
- Measuring headphone and headset microphones (including Send performance)
- Measuring Active Noise Cancellation (ANC)
- Voice activation and Open Loop measurements
- Distortion measurement methods including Non-coherent Distortion
- Measurement considerations for AR & Hi-Res
The presentation will be in English, but slides will be in English and Chinese.
There is no charge for this seminar, but registration is required. Please sign up below.
耳机测量进阶篇网络研讨会
中国时间2020年10月22日 星期四上午10点
在这个60分钟的在线研讨会中，声振环保仪器有限公司以及Listen，Inc.创始人兼总裁Steve Temme，会与大家探讨进阶耳机量测。
Listen公司的SoundCheck电声测试系统一直是测试耳机的流行系统已在中国数百条生产线以及全球的研发实验室中使用。在此在线研讨会上，我们将讨论耳机技术的最新发展以及如何进行相应的测量，包括：
- 测量标准，例如IEC 60268-7
- 测量USB和Bluetooth耳机，包括True Wireless Stereo（TWS）耳机/耳麦
- 测量耳机和头戴式麦克风（包括发送性能）
- 测量主动降噪 (ANC)
- 语音激活和开环测量
- 失真测量方法，包括非相干失真
- 扩增实境耳机(AR)和HI-Res耳机的测量注意事项
这次研讨会将会以英文进行，演示文稿将以中英文显示。
不收取任何费用，但是需要提前注册。请在下面注册。
