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研讨会：新的增强型散落粒子算法 / Enhanced Loose Particle Algorithm Launch Event

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2023年6月1日  上午10点（中国时间） |  June 1st 2023. 10am (China Time)

 

请参加Listen最新算法–增强型散落粒子（eLP）的发布研讨会。这种新的算法大大改善了生产线的瞬态失真测量，它提供了高精确度，易于与人类感知相关联，并将瞬态失真假象与谐波失真分开识别，便于故障排除。它也是识别音频设备中嘎嘎作响的按钮，以及汽车嗡嗡声、吱吱声和嘎嘎声（BSR）测量的理想选择。这种新的算法是基于原始研究，并使用了以前没有用于失真测量的技术。请参加这个简短的在线研讨会，由Steve Temme先生进行演示，并详细解释这个算法的工作原理。

 

Join us for a launch seminar for Listen’s latest algorithm, enhanced Loose Particles (eLP). This new algorithm significantly improves production line transient distortion measurement. It offers high accuracy, easy correlation to human perception, and identifies transient distortion artifacts separately from harmonic distortion for easy troubleshooting. It’s also ideal for identifying rattling buttons in audio devices, and automotive Buzz, Squeak and Rattle (BSR) measurements. This new algorithm is based on original research, and uses techniques not previously used for distortion measurement. Join us in this short online seminar for a demonstration by Steve Temme, and a detailed explanation of how this algorithm works.

报名 / Register

ISEAT 2022,October 29-30 2022, Shenzhen, China.

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Listen President, Steve Temme, will be presenting a paper entitled ‘Enhanced perceptual rub & buzz measurement for loudspeaker production test’.  Due to Covid-19 regulations, this paper will be presented by video.

ISEAT Web Site

 

Production Testing Seminar China / 产線测试网络研讨会

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loudspeaker production lineMay 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。

This event has passed. Watch the video.

 

 

 

Basic Loudspeaker Measurement Seminar (China) / 扬声器测试基础篇

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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.

 

蓝牙音频测试 / Bluetooth Testing Seminar

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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。

 

无需消声室的20-20kHz自由场测量 / 20-20kHz Free Field Measurements Without an Anechoic Chamber

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2021年3月17日，上午10点（中国时区）

在本在线研讨会上， Steve Temme将解释如何在无需消声室的情況下，使用模拟自由场测量，在整个可听频率范围内提供准确的自由场测量。这样能让通常要在消声室中进行的测量可以在常规实验室甚至家中进行，这是对于当前在家工作的许多人来说是一项非常宝贵功能。

此测量方法自2001年以来已在SoundCheck中使用，它可以测量低频下的近场响应和高频下的时间窗口远场测量，并将它们拼接在一起以提供整个频率范围内的响应。

 

在这次研讨会中，我们将解释该方法背后的声学和数学原理，并通过预先编写的（免费的）SoundCheck测试序列演示测试程序，并说明结果与消声室内的测量结果之间的关系。

该研讨会不收取任何费用，但需要预先注册。

This event has passed. Watch the recording.

Headphone Measurement Basics

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耳机测试基础篇网络研讨会

Aug 5, 2020 at 10.00am (China time)

中国时间2020年8月5日星期三上午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授权Listen公司的创始人兼总裁Steve Temme先生，与大家探讨耳机测试的基础知识。

Listen公司的SoundCheck电声测试系统广泛用于全球领先的原始设备制造商及其合约制造商的成千上万条生产线。虽然它可以用于测试各种各样的设备，包括扬声器、微型扬声器、耳机、耳麦、智能设备、手机等等，但本次研讨会将着重讨论耳机。

在这次在线研讨会中，Steve Temme先生将涵盖耳机测试的基础知识，包括：

  • 耳机的工作原理
  • 如何测试耳机（包括不同种类的耳机和声学耳模拟器）
  • 研发和产线测试的环境
  • 重要的测试如校正的频率响应、左右声道平衡度、失真等等。

 

In this 60 minute online seminar, S&V Samford presents Listen, Inc. founder and president, Steve Temme, discussing Headphone Measurement Basics.

Listen, Inc’s SoundCheck electroacoustic test system is used by the world’s leading OEMs and their contract manufacturers on thousands of production lines worldwide. Although it can be used for testing a wide range of devices including speakers, microspeakers, headphones, headsets, smart devices, cellphones and more, this seminar will focus on headphones.

In this online session, Steve Temme will cover the basics of headphone testing, including:

  • How a headphone works
  • How to measure headphones (including considerations for different types of headphones, and acoustic ear simulators)
  • R&D and production test environments
  • Important measurements such as corrected frequency response, left/right tracking, distortion etc.

View Recording

Viewers in China WATCH HERE

 

 

 

ISEAT- Shenzhen, China – Nov 9-10, 2019

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We will be participating in China’s leading electroacoustics event, ISEAT on November 9-10 with our exclusive China distributor, S&V Samford.

Steve Temme will be presenting a paper on ‘The Challenges of Testing Voice Controlled Audio Systems’. In this paper, he highlights the common factors in testing smart speakers, hearables, and automotive infotainment systems, such as open loop testing, measuring speech recognition, and testing in the presence of background noise, and explains how to correctly measure such devices.

On display will be our SoundCheck audio test system and associated hardware for testing a range of audio devices including smart speakers, headphones & smart hearables, automotive audio, microspeakers, microphones, smartphones, tablets and more.

 

Paper Abstract:

Smart devices that are voice-controlled such as smart speakers, hearables vehicle infotainment systems are notoriously complex to test. They have numerous connections from wired to wireless and contain much signal processing, both on the record and on the playback side. This means that their characteristics change according to ‘real world’ conditions of the environment that they are used in, such as background noise, playback levels, and room acoustics. Furthermore, their multifunctional nature means that there are many aspects of the device that may need to be tested, ranging from voice recognition to music playback and operation as a hands-free telephone, and in the case of hearables, hearing assistance. Due to their complex non-linear use cases, these devices often need to be tested at different levels and different environmental conditions. This paper focuses on tools and techniques to accurately measure the audio performance of such devices under the many various real-world conditions they are used in.

ISEAT web site

Seminars in China: Smart Speakers and Automotive Audio

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The Challenges of Testing Speech Controlled Audio Systems

Your devices got smarter. Did your test system?

Learn how to implement open loop tests for both playback and recording in a range of devices including smart speakers, automotive audio, robots, IoT devices and more in this practical seminar.

Open loop testing (testing devices where inputs and outputs are independent) enables many types of smart devices and their components to be tested in various formats and situations including:

  • Smart speakers, smart watches and other smart devices
  • Microphone arrays
  • Speech recognition systems with microphones
  • In-vehicle audio systems
  • Audio devices/systems with no physical inputs or outputs
  • Testing in noisy environments

We explain how to measure the same parameters as traditional loudspeakers, discussing such challenges as injecting and extracting response signals, time delays, and triggering the system using voice commands. We also demonstrate how to measure microphone array performance, speakerphone performance and more. Course content includes:

  • Stimulating and capturing responses from a device where you don’t have direct access to the microphone or speaker (open loop testing).
  • Delays, asynchronous stimulus / acquisition, and working with the ‘cloud’
  • Testing with real world signals such as speech and music, and how to analyze results from these test stimuli
  • Voice Recognition – key word spotting, wake word testing, directionality, and the effect of background noise on voice recognition performance
  • Telephony – testing smart speakers for hands-free calling

Speakers /主讲人: Steve Temme, Listen, Inc. and Peter Wulf Andersen, GRAS.

Date & Locations /时间与地点:

2019年1月15日(Tuesday) – Taipei台北
2019年1月16日(Wednesday) – Shenzhen深圳
2019年1月18日(Friday) – Suzhou苏州

More information and registration

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

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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