Tag Archive for: seminar

Advanced Microphone Test Part 1

Listen’s Support Manager, Steve Tatarunis, discusses some of the more advanced aspects of microphone test. This is an expansion of material covered in the Basic Microphone Testing webinar. This seminar is of interest to anyone testing microphone characteristics, both in an R&D and production line environment. This is part one of two in our advanced microphone measurement seminar series, with part two also available on our website. The tests featured in this seminar can be used both at component level, whether selecting microphones for devices or component QC, or these tests can be performed on finished products like smartphones, smart speakers, and more.

Seminar topics include:

  • Demo of microphone test methods substitution, equalized source, and transfer function in SoundCheck
    • How to calibrate for these measurements
    • What are the trade-offs?
  • Advanced microphone test measurements
    • Polar plot
    • Self noise and signal to noise
    • Open loop
    • Active/passive noise rejection

Presenters: Steve Tatarunis
Duration: 63 Mins

Advanced microphone test resources

SoundCheck comes with many pre-written sequences including the sequences demonstrated in this seminar including the microphone test sequences for measuring microphone self noise, microphone substitution, frequency response and sensitivity, and open loop. Additionally, we offer the sequences featured in this seminar microphone polar plot measurements with the new MDT-4000 turntable and open loop microphone test in our sequence library for download. Along with the sequences featured in this seminar, our sequence library is full of additional pre-written sequences for basic microphone measurement.

More about advanced microphone tests

Check out our main page on Microphones, which includes links to test sequences, relevant products and more.

Basic Microphone Measurement Seminar

Technical Support Manager, Steve Tatarunis discusses and demonstrates basic microphone measurement, and how to measure characteristics that matter. Three different basic microphone test methods are explained including substitution, equalized source, and two-channel transfer function. Testing microphones in SoundCheck yields a full array of important results, since SoundCheck can be used to test microphone specifications including frequency response, sensitivity, impedance, directivity/polar pattern, polarity, dynamic range, signal to noise/self-noise, polarization/bias. Finally, two basic microphone measurement techniques are demonstrated: equalized source, and microphone substitution.

 

Seminar topics include:

  • 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.

Presenters: Steve Tatarunis
Duration: 34 Mins

Basic microphone measurement resources

Our sequence library is full of pre-written sequences for basic microphone measurement. Additionally, SoundCheck comes with many pre-written sequences including the sequences demonstrated in this seminar. To take these sequences to the next level, we offer more complex testing scenarios like microphone polar plot measurements with the new MDT-4000 turntable.

More about basic microphone measurement

Check out our main page on Microphones, which includes links to test sequences, relevant products and more.