Our new SoundCheck® brochure is now available in Chinese. This short 12 page brochure is a top-level overview of the SoundCheck audio test system and associated hardware.
or complete the form below to request a hard copy.
Our new SoundCheck® brochure is now available. This short 12 page brochure is a top-level overview of the SoundCheck audio test system and associated hardware.
or complete the form below to request a hard copy.
Audio test and measurement specialist, Listen, Inc. has strengthened its engineering team with the appointment of Al Flint as Engineering Manager.
Al has spent the majority of his professional career in the audio industry, designing award-winning products and managing product development teams. Al’s career began at Sony Professional Products, where his designs included mic preamps and equalizers for the MXP-3000 mixing console. He then spent many years at Lexicon, where his technical contributions can be found in several effects processors. When Lexicon entered the consumer marketplace with digital surround sound processors, Al not only made design contributions to these products, but also established the development team and helped round out the Lexicon product line with multi-channel amplifiers and DVD players. After their acquisition by Harman, Al led a highly skilled team that designed Mark Levinson products, including several critically acclaimed amplifiers. After spending four years in the solar industry, where he managed development of high-power inverters, Al is returning to his audio roots and passion, and is excited about leading the development of cutting-edge audio and electroacoustic test and measurement products at Listen, Inc.
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Test Sequences
The New BTC-4148 enables Bluetooth devices to be accurately tested in SoundCheck® by offering full control over the Bluetooth connection.
Accurately measuring Bluetooth devices is challenging. The Bluetooth protocol is a dynamic and adaptive system that provides devices with many options and parameters that are normally negotiated and set in an invisible manner. Using typical PC Bluetooth interface devices as an audio bridge in test applications is not ideal as the compression codec, sample rate etc. cannot be controlled and the engineer is left guessing as to what values are actually used.
The BTC4148 overcomes this by offering full control over all Bluetooth protocol settings and explicit control over all the CODEC, sample rate transmitter power etc. This enables devices to be specifically tested under the conditions that they need to operate.
Presented by Brian Fallon, SoundCheck Product Manager
This recorded webinar is an overview of testing basic headphone parameters in SoundCheck. Topics include over the ear versus in-ear, ear simulator correction curves, digital headphones, and noise cancelling headphones.
During the loudspeaker manufacturing process, particles may become trapped inside the loudspeaker, resulting in a distinctive defect that is easily heard but difficult to measure. To give a clearer view of the problem, Time-Frequency maps are shown for some defective loudspeakers. Based on this analysis, a reliable testing procedure using a swept-sine stimulus, high-pass filter, and RMS-envelope analysis is presented. Further possible enhancements and applications of the method are listed.
Authors: Pascal Brunet, Evan Chakroff and Steve Temme
Presented at the 115th AES Convention, New York, 2003
