Technical Resources
With over 100 combined years of audio measurement experience, our team has created a wealth of technical papers, sequences, articles and other useful information to assist you with your audio test needs. Please browse the collection below, or filter by type of resource.
Audio Basics: Phase Response
What is phase response? Why is it useful in audio testing? Phase response is one of the most fundamental measurements used to describe the behavior and linear performance of a transducer, such as a loudspeaker. It describes the phase relationship between a transducer’s input signal and its acoustic output as a function of frequency. This […]
USB Headset Measurement
How do you measure USB headsets? In this short video, we demonstrate how to measure USB headsets using SoundCheck. You’ll see how to configure digital input and output channels, set up the headset in the hardware editor, and perform measurements including left and right earphone frequency response, THD, sensitivity, and microphone performance. This method can […]
USB Headset Input/Output Test Sequence
The purpose of these sequences is to test the left and right earphone outputs as well as the microphone input of a USB headset. Because SoundCheck supports both analog and digital interfaces, the headset simply plugs into a computer USB port and configures as a digital channel to be tested like a conventional device. For […]
Overcoming Challenges of Measuring Distortion Audibility in Automotive Audio Systems
Standardized measurement of in-car audio systems remains an ongoing challenge, particularly regarding microphone configuration and placement, test signals, and correlation with perception. Current recommendations from the AES Technical Committee on Automotive Audio (TC-AA) advocate spatial averaging using multi-microphone arrays to improve repeatability. While this method reduces the influence of reflections and standing waves to improve […]
Tonal Noise (Send Path) Sequence
This sequence measures single-frequency interference (tonal noise) in the send path of a communication device to ensure compliance with the Microsoft Teams Audio Test Specification (Section 6.6). A calibrated mouth simulator plays an IEEE Male speech stimulus at 94 dBSPL followed by a period of silence, which is recorded through the device under test. The […]
Tonal Noise (Receive Path) Sequence
This sequence measures single-frequency interference (tonal noise) in the receive path of a communication device to ensure compliance with the Microsoft Teams Audio Test Specification (Section 6.13). The sequence plays and records a test signal containing digital silence directly through the device under test to detect potential narrow-band impairments caused by internal electrical, fan, or […]
Audio Basics: Frequency Response
We’re excited to announce the launch of a brand new instructional series Audio Basics. In this series we walk you through the key measurements used to characterize audio transducers, explaining what they are, what they tell us about performance and why they matter. We’ll also look at how each parameter is measured, and how the […]
Practical Automotive Measurements Seminar
Last week, industry expert and Listen President Steve Temme presented the latest recommendations for automotive audio measurement and the evolving methods used to evaluate modern in-car infotainment systems at Harman’s North American Headquarters in Novi, Michigan. Recorded ahead of the AES Automotive Conference, the presentation discusses the work of the AES Technical Committee on Automotive […]
