Entries by Devin Vaillancourt

100 Things #92: Continuous Log Sweep with Time Selective Response Analysis

Did you know that SoundCheck was the first audio test system to implement the continuous log sweep stimulus, way back in 2001. Also known as a frequency log sweep, or Farina sweep, this stimulus is used with time selective response (TSR) analysis. TSR analysis allows reflections to be windowed out, making it great for loudspeaker […]

100 Things #91: Measurement of Intermodulation Distortion

Intermodulation Distortion measurements are a great alternative to harmonic distortion for measuring narrowband devices such as hearing aids and communication devices. In such devices, harmonic distortion measurements tend to underestimate the distortion as the higher-order harmonics fall outside the pass band of the device. In this short video, Steve Temme demonstrates and explains the two […]

100 Things #90: Curve Smoothing

Curve smoothing in SoundCheck allows for non-destructive processing of data, resulting in smooth and easy to visually understand curves. Curve smoothing can lessen the effects of reflections in the test space, reduce noise, or make curves less jagged for publishing data. The smoothing post processing step in SoundCheck features an array of different, to facilitate […]

100 Things #89: Apply Equalization To A Test Stimulus

Did you know you can equalize a stimulus in SoundCheck to remove the influence of hardware and components from your measurements? All of SoundCheck’s stimulus options can have EQ applied, include Stweep, waveforms, noise, and more. An EQ can also adjust a stimulus to focus on different frequencies, like boosting low or high frequencies for […]

100 Things #88: SoundCheck Support Audio Over IP

SoundCheck supports testing audio over IP using Dante. Dante allows a connection between testing computers and devices over long distances, up to 100 meters. Audio over IP also supports large channel counts, which is perfect for multichannel testing across multiple rooms in a facility. SoundCheck flexible hardware compatibility means networked audio devices can be configured […]

100 Things #87: Make Non-Coherent Distortion Measurements

Did you know that you’ve been able to make distortion measurements in SoundCheck with real-world signals such as speech and music since 2006? This is a valuable technique for testing modern devices with on-board DSP that filters out signals such as sine waves and noise. Non-coherent distortion measurements offer excellent correlation with perception and are […]

100 Things #86: Listen’s Latest Generation Audio Interfaces

Traditional sound cards have drawbacks for audio testing, such as physical controls that can easily be altered, cabling errors, and the need for manual calibration. Two interfaces in our next generation of audio testing hardware: AudioConnect 2, and AmpConnect 621, fix these common problems. Both interfaces feature high resolution audio inputs and outputs, TEDS compatibility, […]

100 Things #85: Integrate Soundcheck Data With Your Database

Using SoundCheck as part of your test setup and database is easy. SoundCheck’s data can be saved directly to Microsoft Access or an SQL database, all from within a sequence. This includes curves, values, results, and waveforms. SoundCheck’s autosave sequence steps can automatically gather, format, and export sequence data. Plus, with TCP/IP integration, SoundCheck’s data […]

100 Things #83: Open Loop Measurements Of Smart Devices

Open loop testing enables measurement of smart devices, phones, and any device that cannot play a stimulus and record at exactly the same time. Both speakers and embedded microphones on these devices can be measured with SoundCheck, thanks to it’s module test architecture. With SoundCheck, the stimulus and acquisition are separated, so a stimulus file […]