News & Events
Please use the filters in the right sidebar to narrow content by type of news.
Listen offers ETSI Standard background noise generation system
Listen, Inc. has launched the ETSI standard background noise generation module, a SoundCheck test sequence which calibrates a 4.1 speaker array to conform with the ETSI ES 202 396-1 Standard. This provides an equalized, calibrated playback solution to stress devices in a standardized and repeatable way. The sequence includes a library of real-world binaural recordings from the ETSI standard: cafeteria, pub, crossroad, vehicle, single voice distractor, and office noises. Custom or user-defined binaural recordings can also be used. With a purchase price of just $5,000 for the test sequence, this offers an extremely economical alternative to a conventional $20,000+ stand-alone background noise generation system.
Furthermore, it offers the advantage that the ETSI standard library is fully integrated with, and managed by, the SoundCheck test system. This means that the calibrated background noise levels can be fully controlled and adjusted as part of a pre-programmed test sequence, significantly reducing test development time as well as simplifying the physical setup.
This has many applications, for example evaluating ANC, noise suppression, SNR optimization of microphone arrays, beamforming directionality studies, and more. It is particularly useful for voice recognition testing as the test sequence may include loops to incrementally increase the volume or change the noise and repeat the test until the voice is no longer accurately recognized.
Most significant is the inclusion of a new frequency trigger. This allows frequency-based triggering of acquisition from an external source using a pilot tone at the beginning of a test sweep. This allows for improved accuracy over previous level-based triggering when capturing responses from a device where you don’t have direct access to the microphone or speaker, especially in noisy environments. This technique optimizes open loop test methods for smart speakers and other voice-controlled devices such as smart phones, robots, automotive audio, smart thermostats, hearables and more. You can view a short video explaining this feature here:
We also have a free measurement sequence using the frequency trigger that can be downloaded from our website so that you can test it out right away! View Sequence.
SoundCheck now also fully integrates with the Mentor A2B interface for testing automotive audio connected via the Analog Devices A2B digital bus. The Mentor Analyzer, which handles the transmission of signal in to and out of the bus, is viewed as an ASIO interface by SoundCheck, enabling SoundCheck to read/write to the device and therefore analyze any transducer connected to the A2B bus. A custom VI permits control of the Mentor A2B interface configuration via SoundCheck. This means that it can be controlled from within a SoundCheck sequence, for example loading configurations and starting/stopping ASIO streams. This makes it an ideal R&D or production line test solution for automotive audio, or for anyone testing transducers connected via A2B bus. More.
Also available (additional cost) with this new release are two optional sequences – background noise simulation to the ETSI ES 202 396-1 standard, and the TIA-920B dual-bandwidth telephone test standard.
The background noise simulation sequence (part number 3121) is a cost-effective alternative to dedicated background noise generation systems. It calibrates a 4.1 speaker array to conform with the ETSI ES 202 396-1 Standard, providing an equalized, calibrated playback solution to stress devices in a standardized and repeatable way. The sequence includes a library of real world binaural recordings from the standard, and custom or user-defined binaural recordings may also be used. Applications of this sequence include evaluating ANC, noise suppression, voice recognition testing, SNR optimization of microphones, beamforming directionality studies of microphone arrays and more. More.
The TIA-920B sequence (part number 3111) tests to the TIA-920B dual-bandwidth standard that applies to both narrowband (NB) and wideband (WB) devices. It also allows a choice between Free Field (FF) and Diffuse Field (DF) as the Listener Reference Point (LRP). The current release measures digital communications devices with handset features, according to TIA-920.110-B and speakerphones, according to TIA-920.120-B. Support for headset measurements, according to TIA-920.130-B will be added in a future release. More.
We are excited to announce that SoundCheck fully integrates with the Mentor A2B interface for testing automotive audio connected via the Analog Devices A2B digital bus. The Mentor Analyzer, which handles the transmission of signal in to and out of the bus, is viewed as an ASIO interface by SoundCheck, enabling SoundCheck to read/write to the device and therefore analyze any transducer connected to the A2B bus. A custom VI permits control of the Mentor A2B interface configuration via SoundCheck. This means that it can be controlled from within a SoundCheck sequence, for example loading configurations and starting/stopping ASIO streams. This makes it an ideal R&D or production line test solution for automotive audio, or for anyone testing transducers connected via A2B bus.
Watch a video demonstration of an automotive audio test using the Mentor A2B interface:
Please see our knowledgebase article for download links and installation instructions.
Contact your Listen sales engineer for more information.
Listen welcomes on board our new DSP Engineer, Rahul Shakya. Rahul holds a Bachelor’s degree in Engineering and Mathematics from Trinity College, Hartford, and an MSc and a PhD in Electrical Sciences and Computer Engineering from Brown University. Rahul brings strong Audio DSP skills to his role at Listen, with several years’ experience as a graduate and post-doctoral researcher at Brown University where he worked on a diverse range of and DSP, Speech and audio processing research topics.
In this short 10 minute video, sales engineer Les Quindipan gives a brief overview and demonstration of the new features and functionality of SoundCheck 16.
Listen has expanded its support team with the addition of Cam Ruffle-Deignan. Cam has recently graduated with a BSME from the University of Vermont where he spent his time doing applied polymer research, playing intramural sports, and working in a student-run prototyping lab. He has a keen interest in audio products, having interned for Listen last summer, and looks forward to continue developing his audio test skills. Cam will assist Steve, Mark and Mark in providing front line support to our customers, as well as developing training materials, test sequences and support documentation. When he is not in the office, Cam enjoys going for canoe trips, hiking north-eastern mountain ranges, and tinkering with his 3D printer.
Listen has strengthened its infrastructure with the appointment of Eric Johnson to the role of Operations Director. In addition to internal administrative functions such as HR and facilities management, Eric manages the entire operations team including product supply and finance to ensure that all customer requirements are met efficiently and effectively. Eric has spent his career optimizing business operations for growing technology companies, most recently at Sophelle where he held the position of VP and COO. Eric holds a Bachelor’s in Chemistry from Lawrence University and a Master’s in Information Resources Management from Syracuse University. Outside of work, Eric enjoys photography, listening to music, homebrewing, and cooking for his wife, Jo Anne.
Listen is excited to announce the appointment of Rick Spada to the position of Senior Software Manager. Rick holds both Bachelors and Masters degrees, and has over 30 years’ experience in software development. Prior to joining Listen, Inc. he has worked in control systems and robotics, programmed software, and managed software development teams, most recently at Yesware and MathWorks, Inc. Rick is a lifelong resident of Massachusetts and in his spare time enjoys cooking for his family (wife Peg, son Dominic, and dog Olive) and fishing with his son on Cape Cod.