Boston SoundCheck and Electroacoustics Training – April 11-13, 2018

We are holding a 3 day training event on April 11-13 in Waltham, MA (Boston area). This event will feature a 1-day course on electroacoustics testing, presented by Marty Alexander of Alexander Acoustics, followed by a 2 day SoundCheck training class.

Electroacoustics – April 11th
In the Electroacoustics class, you will learn about the theory behind your audio measurements. The content will cover:

  • Hearing and  psychoacoustics
  • Basics of acoustical measurements
  • Basic quantities and how to describe them
  • Sound sources, room acoustics and radiation
  • Acoustic Instrumentation
  • Loudspeaker measurements
  • Microphone measurements
  • Headphone/Earphone Measurements
  • Communication System Measurements, e.g. telephones, mobile phones, speakerphones

Course presenter: Marty Alexander – Alexander Acoustics, LLC.
Cost: $495 ($350 with valid SoundCheck support contract)



SoundCheck – April 12th-13th
This hands-on class covers all the major features of SoundCheck version 16, including writing sequences, test signals, analysis, distortion measurements and more. The class is a combination of presentations interspersed with hands-on exercises to ensure that you are comfortable with all the concepts and methods taught before you leave the classroom. Although no previous SoundCheck experience is assumed, the course still offers plenty to users familiar with writing basic sequences.  Content includes:

  • Overview of SoundCheck software
    • Software Options
  • Hardware
    • Configuring audio interfaces and external equipment
    • Listen Certified Sound Cards
  • Calibration
    • Calibration of different DUT types (telephones, speakers, etc.)
  • Virtual instruments
    • Spectrum Analyzer, RTA, Multi-meter, Signal Generator, Oscilloscope
    • Virtual Instruments – hands-on
  • Online forum, bug and wish lists
  • SoundCheck Steps & Sequences
    • Philosophy & Architecture
    • Creating and editing SoundCheck Test Sequences and Steps
    • Using the Sequence Wizard
    • Stimulus & Acquisition Step details
    • Basic analysis
    • Display
    • Data Management Hands-on
    • Limits
    • Sequence Development – hands-on
    • Printing
    • Serial numbers
    • Autosave and recall
    • Messages – user prompts, calling external devices
    • Post-processing
    • Sequence Development (part 2) – hands-on
    • Statistics
    • Sequence loops and jumps
    • Advanced sequence development

Course presenters: Steve Tatarunis, Mark Latshaw – Listen, Inc.
Cost: $950 ($665 with valid SoundCheck support contract)

Location / Dates / Time
Hilton Garden Inn, 450 Totten Pond Rd, Waltham, MA 02451
April 11-13, 2018. Coffee / snacks / sign-in starts at 8:00 AM and the training course runs from 8:30 AM to 5:00 PM each day.



Seminar: Smarter Measurements for Smarter Speakers

Smarter speakers require smarter test methods!

smart_speakersLearn how to test smart speakers, robots, voice-controlled automotive audio and other IoT devices in our practical half-day seminar taught by industry experts Dan Knighten, and Marc Marroquin of Listen, Inc.

Although acoustic testing of smart speakers and other voice-activated devices presents challenges such as injecting and extracting response signals, time delays, and triggering the system using voice commands, it is still possible to measure the same parameters as traditional loudspeakers, In addition we can also measure microphone array performance, speakerphone performance and more.

We demonstrate how to do this, focusing on:

  • 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

There is no charge for this one-day seminar and lunch will be provided. Space is limited, so please RSVP today.


Locations and Dates:

Cupertino (San Jose area): Wednesday February 14th, 2018 – 9.00am – 1.30pm. Hilton Garden Inn, Cupertino. 10741 N Wolfe Rd, Cupertino, CA 95014

Culver City (Los Angeles area): Friday February 16th, 2018 – 9.00am – 1.30pm. DoubleTree by Hilton Hotel Los Angeles – Westside. 6161 W Centinela Ave, Culver City, CA 90230

Agenda (9am-1.30pm)

  • Introduction
  • Open Loop Testing
    • What is ‘open loop’ testing?
    • Can you really measure frequency response and harmonic distortion in an open loop?
    • Using Frequency Shifting to time align asynchronous stimuli and response
    • Working with cloud based services
  • Testing with Real World Signals
    • How to use real voice and / or non test tones to evaluate acoustic performance
    • Analysis techniques used for evaluating non test tone stimuli
  • Voice Recognition
    • Key Word spotting / Wake Up word testing
    • Room effects, environmental distractors, and SNR…how they affect voice recognition performance
    • Measuring directionality
  • Telephony
    • What voice quality metrics are important for speakerphones?
    • Challenges of testing speakerphones in different environments
  • Networking lunch


Reserve your space