Events
Upcoming Events
Advanced Microphone Measurement Seminar / 麦克风测试进阶篇网络研讨会
April 14, 2021. 9.30am (China time)
In this 120 minute online seminar, S&V Samford presents Listen’s Technical Support Manager, Steve Tatarunis, discussing some of the more advanced aspects of microphone testing including:
- 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, phase, self-noise, signal to noise, distortion, active/passive noise rejection
- 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
There is no charge for this seminar, but registration is required.
中国时间2021年4月14日 星期三上午9.30点
在这个120分钟的在线研讨会中，声振环保仪器有限公司以及Listen,Inc.技术支持经理Steve Tatarunis，会与大家探讨麦克风测量进阶的知识, 包括：
- SoundCheck中的对比测试法、均衡音源和传递函数程序，包括如何校准这些测量。 这是“基础麦克风测试网络研讨会”涵盖的内容的扩展，并包括有关程序、校准以及每种方法取舍的详细信息。
- 进阶测量，包括极坐标图、相位、底噪、信噪比、失真，主动/被动噪声抑制
- 对语音激活设备（例如智能扬声器，汽车音频等）的开环麦克风测试
- 语音激活设备的开环麦克风测试（例如智能扬声器，汽车音频等）。
- 用于测量麦克风阵列和MEMS的进阶硬件和测试配置
是次研讨会不收取任何费用，但需要提前注册。
无需消声室的20-20kHz自由场测量 / 20-20kHz Free Field Measurements Without an Anechoic Chamber
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。
Remote Training
Due to the current COVID-19 situation, we are not offering in-person group training classes. These will be resumed when regulations allow and there is the demand for it.
In the meantime, we offer customized online training for groups of people from the same company, and can offer flexibility in timing, session length and schedule. Please contact your sales engineer for more information.
Additionally, we will shortly be announcing some scheduled online training classes and these will be posted here as soon as information is available.
Don’t forget to check out our collection of Working from Home with SoundCheck videos on our Youtube channel. Our support team has created this series of videos that demonstrate features of SoundCheck that can easily be explored offline without full access to your lab.
If you are a new user, our series of on-demand training videos is a good place to start. These cover much of the content from day 1 of our basic 2 day training.
Past Events
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。
Online Training: Advanced Analysis
Sept 15 at 9.00am US East Coast time (3pm Central European Time, 2pm UK time) and 2.00pm US East Coast time (11am US West Coast time)
In this 2 hour training, we will be taking a deeper dive into some of the more advanced features of the analysis editor. This will be useful for anyone with a basic understanding of SoundCheck setup, calibration and sequence writing who is looking to add value to their measurements by optimizing their test procedures. We will be taking a closer look at how to configure various analysis algorithms, and the impacts of the chosen settings on measurement confidence and speed. This training offers value to both R&D and production users. We will cover:
- Understanding and configuring the distortion options in SoundCheck’s Harmonictrak algorithm, including how to select the best option for your application
- Configuring the Loose Particles algorithm to detect transients in waveforms to catch manufacturing defects that may not be highlighted using frequency based analysis
- Using SoundCheck’s measurement confidence option to adjust the stimulus to obtain the best trade off between speed and accuracy
- How to analyze ‘real world’ test signals (e.g. multitone, noise, music, speech) for measuring devices that do not perform well with sine wave signals (e.g. telecoms, those including DSP)
This training is free to support contract holders and $79 for others.
Online Seminar: Microphone Measurement Basics
Sept 17, 2020. 9.00am and 2.00pm US East Coast time (6.00 am and 11.00 am West Coast time)
Microphone test in Anechoic chamber (photo courtesy of Shure, Inc. Used with permission.)
In this 60 minute online seminar, Listen’s Technical Support Manager, Steve Tatarunis discusses Microphone 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 microphones.
In this online session, Steve Tatarunis will cover the basics of microphone testing, including:
- Common microphone types and how they work
- Microphone specifications
- How to measure microphones using the two standard methods available in SoundCheck
- Substitution method
- Equalized speaker method
- R&D and production test environments
- Important measurements such as frequency response, sensitivity, etc.
There is no charge for this seminar, but registration is required. Please sign up below. Note that you will be sent login details the day before. The same login details will offer access at both times, so you can choose to attend the one most convenient to you.
Microphone Measurement Basics
Sept 16, 2020. 10am China time
In this 60 minute online seminar, S&V Samford presents Listen, Inc. Technical Support Manager, Steve Tatarunis discussing Microphone 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 microphones.
In this online session, Steve Tatarunis will cover the basics of microphone testing, including:
- Common microphone types and how they work
- Microphone specifications
- How to measure microphones using the two standard methods available in SoundCheck
- Substitution method
- Equalized speaker method
- R&D and production test environments
- Important measurements such as frequency response, sensitivity, etc.
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.
麦克风测试基础篇网络研讨会
中国时间2020年9月16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以及Listen，Inc.技术支持经理Steve Tatarunis，会与大家探讨麦克风测量的基础知识。
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麦克风。
在这次在线研讨会中，Steve Tatarunis将涵盖麦克风测试的基础知识，包括：
- 常见的麦克风类型及其工作原理
- 麦克风的规格
- 如何使用SoundCheck的两种标准方法测量麦克风
- 对比测试法
- 标准均衡音源测试法
- 研发和产线测试的环境
- 重要的测试如频率响应、灵敏度等.
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。
Online Training: Basic Sequence Writing (European Schedule)
Sept 23 at 3pm Central European Time, 2pm UK time, 9am US (East Coast) time [Note: rescheduled from original date of Sept 8th]
The ability to quickly generate test sequences is one of the most powerful SoundCheck skills you can acquire. We are bringing a 2 hour basic sequence writing course to the comfort of your own home with our new online training at a convenient time for our European customers.
This 2 hour course is a condensed version of the basics of sequence writing from our popular 2 day training class. We will start from the beginning, explaining how to determine the test parameters and hardware that will meet your specific test requirements. We will look at best practices for creating a sequence, and finally we will assemble a sequence from scratch. This course is ideal for novice SoundCheck users, or those who have been using SoundCheck with sequences that others have written and who are ready to start developing their own. This training is free to support contract holders and US $79 for others.
