All past online 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:

https://content.listeninc.com/advanced_headphone_seminar

 

 

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
  • 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.

Register Now

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.