Tag Archive for: TEDS

100 Things #54: TEDS Microphone Support for Fast Calibration

TEDS microphone support (with appropriate hardware) in SoundCheck makes your audio measurement system setup and calibration fast and simple. Listen’s portable and budget-friendly AudioConnect 2  audio test interface, and the AmpConnect 621 multi-channel, high resolution test interface both support TEDS.

SoundCheck Supports TEDS Microphones for Fast Calibration

Learn more about Listen’s hardware with TEDS Microphone Support

Check out the new features video for Listen’s AudioConnect 2 and AmpConnect 621, which both support TEDS microphones.


Video Script: TEDS Microphones Support in SoundCheck for Fast Calibration

A TEDS, or Transducer Electronic Data Sheet, compatible microphone, is a measurement microphone with a programmed data chip. The data chip stores a wide variety of calibration data including the microphone’s serial number, sensitivity, and date calibrated information. This makes setup and calibration with a TEDS microphone fast and easy, particularly in a multichannel system.

Did you know that SoundCheck includes direct support for TEDs microphones with supported hardware? This capability is available in SoundCheck 18 and later. When this is combined with Listen’s AmpConnect 621 multi-channel, high resolution test interface, setup and calibration could not be easier. Let’s take a look.

Here’s my SoundCheck Calibration Window with 6 separate measurement microphones with 6 signal paths and calibration files. This 6 mic array might be used for in-vehicle audio testing, for example. When a TEDS compatible test interface like Listen’s AmpConnect 621 is detected, the “Read TEDS” button in the Calibration window is available. When depressed, SoundCheck can retrieve the microphone’s serial number, mic sensitivity and calibration date directly from a TEDS mic. The process can be repeated for each connected TEDS mic. Setup could not be easier.

Now we want to hear from you. Do you use TEDS microphones for audio measurements? Let us know in the comments.  For more information, visit ListenInc.com.





SoundCheck 18 Released: New Features for Large-scale Integration and Multi-channel / Voice-activated Device Testing

SoundCheck 18, the latest release of Listen, Inc.’s flagship audio test and measurement system, contains many new features focused on automation and simplicity. Some of these are specifically designed for large-scale integration in factory environments, while others are designed to accelerate R&D testing, particularly where multiple channels are required and/or voice-activated devices are being tested.

Test configuration data, such as limits, test levels, and test signals, can now be passed into SoundCheck from external programs using TCP/IP commands. By externally storing parameters, a single sequence can be used for multiple products, simplifying the number of sequences that a large organi­zation needs to maintain, and reducing test configuration time. This functionality is also useful for applications where a sequence needs to be run many times with different parameters, for example, testing voice recognition with a range of voices or test levels, or where SoundCheck tests are run as part of a larger automated test framework controlled using Python, C#, Visual Basic, LabVIEW, etc.

Setup time is reduced with true plug’n’play hardware configuration. Listen and Portland Tool & Die interfaces are simply connected via the USB cable, and the software automatically creates input and output signal paths and populates parameters such as sampling rate and calibration values. Furthermore, when substituting devices of the same type, SoundCheck will re-use the configuration pre­viously set up, either manually or during a sequence, so that signal paths and sequence configurations do not need to be updated. This offers significant time-savings when deploying a sequence over multiple stations accelerating set-up time for large-scale operations. New TEDS Support (with compatible Listen hardware) enables automatic identification, configuration and calibration of TEDS microphones and accelerometers, also saving time on initial hardware setup or whenever hardware is changed.

The development and optimization of test sequences has been simplified with improvements to gain control selection. Similarly, sampling rate management has been streamlined with automatic latency rate adjustment for devices where latency varies with sampling rate, and the ability to set sampling rate in the stimulus editor. Sampling rate when using WAV files is also now automatically adjusted, making it simpler to make measurement with wave file signals such as speech or music.

For MEMS microphone tests, the Portland Tool & Die MEMS interfaces can now be controlled from within SoundCheck for faster setup as well as greater measurement reliability as the device settings can be built into the test sequence. Se­quences using the R&D grade DCC-1448 interface will also work seamlessly with the production-grade PQC-1448, making it much simpler to transition sequences from the R&D lab to the produc­tion line.

Additional new features include WASAPI driver support for improved multichannel capabilities, and enhanced digital I/O control for easy conversion of sequences between hardware options.

Watch the New Features Video