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Learn about the latest in headphone test systems and methods from design to EOL Test. Industry experts Steve Temme (Listen, Inc.) and Peter Wulf-Andersen (G.R.A.S.), as well as guest speaker Chris Struck will discuss test equipment (ear couplers, test fixtures, test software and hardware) and demonstrate practical test setups for both R&D and QC headphone testing. It will cover in-ear monitors, Bluetooth, lightning/USB, noise-cancelling and high resolution headphones, in addition to conventional analog headphones. You can even measure your own headphone using our equipment in the hands-on session. Please see the full agenda below.
There is no charge for this one-day seminar and lunch will be provided. Space is limited, so please RSVP today.
Locations and Dates:
Seattle: Monday Feb 27th, Embassy Suites Bellevue
Silicon Valley: Wednesday March 1st, Embassy Suites Santa Clara
Los Angeles: Friday March 3rd, Embassy Suites Glendale
Agenda (9am-4pm) – UPDATED
- Overview of Headphone Test Systems and tools
- Traditional tools vs. modern consumer demands
- Introduction to head and ear related terminology and definitions.
- Historical perspective and background for the tools and standards used today.
- Limitations vs. Possibilities in term of the measurement capabilities. How does that relate to the modern challenges with Bluetooth and ANC related testing tasks?
- Tools for Next Generation Headphone Testing
- Solutions to some the challenges addressed above.
- Examples based on products and measurements.
- What about frequencies above 20kHz? Science or marketing? Measurement Consistency – Development vs. Production
- Progress in measurements from Head and Torso Simulator (KEMAR) to Production Test Fixture (45CC – flat plate). How the different components affect the measurements:
- Software and hardware for headphone testing including typical headphone measurements and test setups
- Traditional tools vs. modern consumer demands
- Practical examples of headphone measurements on.
- Analog Headphones
- Bluetooth Headsets
- ANC Headphones
- Lightning/USB Connected Headphones (using triggered recordings)
- Hi-Res Headphones
- In-ear monitors
- Measurements including:
- Frequency Response relative to a target response
- Left/Right tracking
- Noise attenuation
- Distortion including Non-Coherent Distortion
- Standards including Max SPL EN-50332 & IEC-60268-7
- Headphone Design (Guest Speaker Chris Struck, CJS Labs)
- Desired headphone response
- Headphone measurement standards
- Hands-on testing: Bring your own device and test it using one of our measurement setups
A new 4 page brochure outlines Listen’s capabilities in loudspeaker and microspeaker testing. SoundCheck offers simple, fast and accurate testing of any loudspeaker – no matter what the form factor, functionality, connector or additional features. It measures a full range of driver parameters via traditional analog or digital, wireless/Bluetooth, Toslink, HDMI or USB connections, as well as microphone performance, surround sound and more.
Measurements that SoundCheck can make include:
- Frequency response
- Phase & polarity
- Distortion: harmonic, IM, multitone & non-coherent
- Rub & Buzz (inc. Perceptual Rub & Buzz)
- Directivity (including polar plots)
- Max SPL
- Power rating tests
- Simulated free field measurements
- Thiele-Small parameters
- Time-frequency analysis
A new 4 page brochure outlines Listen’s capabilities in automotive audio testing. SoundCheck offers simple, fast and accurate testing of vehicle audio quality, from individual speaker components to complete in-vehicle infotainment and telematics systems. With interfaces to connect via Bluetooth, Lightning, USB and with individual MEMs devices, as well as analog connections, SoundCheck can handle the complexity and demands of testing in today’s vehicles. The measurements that SoundCheck can make include:
- Speaker/system response
- Speaker/panel buzz, squeak and rattle
- Bluetooth audio performance
- Head unit and amplifier response & THD+N
- Microphone/microphone array response
- Active noise cancellation effectiveness
- Spatial reproduction accuracy
For a limited time we are offering deep discounts on a system upgrade/support contract package to enable you to get up to date with the latest version of SoundCheck. The upgrade offer is a simple flat rate: $3,950 for owners of SoundCheck 9 or 10, $3,250 for owners of version 11, $2,500 for owners of versions 12 through 13, and $1,395 for owners of version 14. All the modules on your present system will be included.
SoundCheckTM 15 expands the testing capability of SoundCheck with additional external control, calibration, audio mixing and hardware integration, and introduces the first in our redesigned virtual instruments, the multimeter. New features include:
- Simpler, yet more powerful external control of SoundCheck with new TCP/IP control.
- Redesigned multimeter to offer additional functionality as well as ease of use.
- Improved plot legend with a toggle to make legend visible or invisible, and placement at the top or the right of the graph.
- Faster setup with new auto-mode in Hardware Editor and automatically selected status.dat.
- Improvements in Bluetooth interface control including faster response, better abort handling and the ability to detect when a connection has failed.
- Improved audio mixer enables controls of any audio input or output via steps in SoundCheck.
- Supports accelerometer calibration and force measurement for measurement of linear motors such as those used in haptic devices.
Call your sales engineer today to receive a quote for upgrading all your SoundCheck systems. These discounted rates are only available until December 16th, 2016, so order today!
|Upgrade from Version||Upgrade List Price||Promotional Upgrade Price||Discount|
If you are using a version prior to version 9, please contact your sales engineer for a personalized quotation at discounted pricing.
You can also reduce your future upgrade costs by purchasing an annual support contract for an additional $950. With this, you will receive SoundCheck 16 when it is released at no extra charge, as well as priority support service. If you have multiple systems with different purchase dates, we are happy to work with you to get them all upgraded to the latest version and onto the same annual support contract cycle.
Please note that these prices are applicable to the US only. Users outside the US should contact Listen or their local representative for pricing information.
Please fax your purchase order to 617-556-4145 or email it to firstname.lastname@example.org, or contact us on this email address if you would like to pay by credit card, have any questions, or need additional paperwork to support your order.
In this short 10 minute video, sales engineer Les Quindipan gives a brief overview of the new features and functionality, and demonstrates them in the software.
Listen’s revolutionary audio test amplifier, SC Amp, has been awarded US Patent # 9,386,387. This patent covers Listen’s unique high accuracy single channel impedance measurement method, which used a unique feedback circuit to offer dual channel accuracy using just a single channel. This enables full electrical and audio tests to be carried out simultaneously and with high accuracy using just 2 channels.
Specifically designed for the audio test market, SC Amp also incorporates several other features unique to the needs of audio test and measurement, such as low distortion (THD <0.025%) and a low noise floor (>100dB). Fixed gain eliminates calibration errors as there is no gain knob to be accidentally knocked or tweaked when it is in use. It supports the application of a DC voltage offset to the AC signal for testing transducers under adverse conditions, and features overload/output protection to prevent damage in case of shorting or overload.
Many unnecessary features found in regular audio amplifiers have been eliminated to keep production line operation simple and error-proof. Although it is designed to integrate seamlessly with Listen’s SoundCheck audio test and measurement software, it will also work well with other brands of test system.
Listen president, Steve Temme commented, ‘We are thrilled that the innovative design of this product has been recognized with this patent, and we are confident that this method will be quickly recognized by the marketplace.’
Listen, Inc., is excited to announce the release of SoundCheck Version 15. This release expands the testing capability of SoundCheck with additional external control, calibration, audio mixing and hardware integration, and introduces the first in our redesigned virtual instruments, the multimeter.
The redesigned multimeter now offers two views, a compact ‘meter’ view, or an expanded detailed ‘settings’ view. In ‘meter’ view, a clear, simple level meter is displayed, which changes color to warn of overload or near overload values. Averaging type, weighting type and bandwidth are also shown. In expanded view, 4 different tabs for measurement, averaging, filters and limit setting are visible, and options such as linear/log scale, filtering and weighting options, etc. can be selected. Enhancements to the multimeter’s capabilities include the ability to measure DC voltage in addition to AC voltage so that SoundCheck can be used with a DC coupled interface for making audio electronic measurements, high and low pass filters for removing electrical noise and low frequency background noise, and automatic scaling to adjusts the range of the display based on the signal.
New TCP/IP control functionality makes external control of SoundCheck simpler, yet more powerful, a valuable feature for anyone who needs to control SoundCheck from an external program, for example as part of an overall test plan or factory automation. It allows communication with SoundCheck via any programming language, on any operating system, either locally or through a network, so that a single computer can control multiple SoundCheck systems. It also features a more powerful and expandable command format for interacting with SoundCheck.
Other enhancements include accelerometer calibration and force measurement to enable testing of linear motors such as those used in haptic devices, an improved plot legend with choice of placement, faster setup with a new ‘auto-mode’ in the hardware editor, better control of Bluetooth interfaces and an improved audio mixer.