New Bluetooth Interface

BTC-4148 Bluettoth Interface

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.

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Headphone Testing – an Overview

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.

Watch Webinar

 

Loose Particle Detection

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

Full Paper