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Acoustical Measurement of Sound System Equipment according to IEC 60268-21

KLIPPEL LIVE is an informative new webinar series as we continue to educate and support loudspeaker designers and manufacturers around the globe. To kick this off, we start with a 15 part series about using the IEC 60268-21 acoustical measurement standard, perfect for anyone working with speakers, headphone and other audio devices. 


This includes practical information regarding:

  • Quickly and accurately measuring in normal, non-anechoic rooms

  • Comprehensive distortion testing

  • Linking physical and perceptual evaluation 

Along the way, we give tips and discuss how to:

  • Interpret measurement results
  • Avoid pitfalls  

At the end of each live webinar, we will answer questions submitted by you, the viewer.


Detailed module comparison chart for IEC Standard 60268-21.

Upcoming Webinar


Part 6: Selecting Measurements with High Diagnostic Value

The next webinar will address the properties of different types of static and dynamic signal distortions and how to measure them


Date: Wednesday, 27th May 2020

Start at 5:00 pm (Central European Time)


» Registration 

Section Agenda

  1. Signal distortion – a useful concept for sound reproduction
  2. Properties of linear, nonlinear and other distortion
  3. Comprehensive evaluation of the large signal performance
  4. Interpretation of the measured symptoms and linking with the physical causes
  5. Overview on new tests defined in IEC 60268-21
  6. Questions and discussion

Webinar Overview

DateSessionRegistration Replay WebinarHandout中文版讲义
April 22th, 20201. Modern Audio Equipment Needs Output Based Testing                                    closedLink Session 1


课程 1
April 29th, 20202. Standard Acoustical Tests Performed in Normal Rooms closedLinkSession 2


课程 2
May   6th, 20203. Drawing Meaningful Conclusions from 3D Output Measurement closedLinkSession 3


课程 3
May 13th, 2020

4. Simulated Standard Condition at an Evaluation Point 

closedLinkSession 4
May 20th, 20205. Maximum SPL – Giving this Value Meaning closedLinkSession 5
May 27th, 20206. Selecting Measurements with High Diagnostic Value LinkComing soon
Coming soon7. Amplitude Compression – Less Output at Higher Amplitudes Coming soonComing soon
Coming soon

8. Harmonic Distortion Measurements – Best Practice 

Coming soonComing soon
Coming soon9. Intermodulation Distortion – Music is More than a Single Tone Coming soonComing soon
Coming soon10. Impulsive distortion - Rub&Buzz, Abnormal Behavior, Defects Coming soonComing soon
Coming soon11. Benchmarking of Audio Products Under Standard ConditionsComing soonComing soon
Coming soon12. Auralization of Signal Distortion – Perceptual Evaluation Coming soonComing soon
Coming soon13. Setting Meaningful Tolerances for Signal Distortion Coming soonComing soon
Coming soon14. Rating the Maximum SPL Value for a Product Coming soonComing soon
Coming soon15. Smart Speaker Testing with Wireless Audio Input Coming soonComing soon