Search results
Results from the WOW.Com Content Network
Audio system measurements are used to quantify audio system performance. These measurements are made for several purposes. Designers take measurements to specify the performance of a piece of equipment. Maintenance engineers make them to ensure equipment is still working to specification, or to ensure that the cumulative defects of an audio ...
In audio test, there are a small number of performance benchmarks that are most important when evaluating a device-under-test (DUT). We call them “The Big Six” measurements. These are: • Level • Frequency Response • Total Harmonic Distortion plus Noise (THD+N) • Phase • Crosstalk • Signal ‑ to ‑ Noise Ratio (SNR)
"The Big Six” audio measurements are: level, frequency tesponse, THD+N (total harmonic distortion plus noise), phase, crosstalk, signal-to-noise ratio.
Here is the explanation from Audio Precision: The stimulus is a strong low-frequency interfering signal (f1) combined with a weaker high frequency signal of interest (f2). f1 is usually 60 Hz and f2 is usually 7 kHz, at a ratio of f1_f2=4:1. The stimulus signal is the sum of the two sine waves.
Audio Measurement Techniques Anechoic Measurements. The ideal way to measure loudspeaker performance is in an anechoic chamber or a room without reflections. In order to accurately measure bass frequencies down to 20Hz, such a chamber needs to have non reflecting surfaces down to 20Hz.
We call them “The Big Six” measurements. These are: • Level • Frequency Response • Total Harmonic Distortion plus Noise (THD+N) • Phase • Crosstalk • Signal‑to‑Noise Ratio (SNR) Granted, different audio devices require different approaches for test and measurement procedures.
A number of (good) manufactures include measurements from Audio Precision although some are from the older “2700” series system. So learning how the Audio Precision measurements work in this article, will help you understand those specifications too.
This website is a clearinghouse for audio measurement related information with an emphasis on live audio measurements. The goal is to provide useful information regarding how to measure, verify and optimize a sound system, test audio gear to verify proper functionality and to explain the principles of sound system design and optimization as I ...
This article discusses methods of making six basic audio measurements using a home theater receiver and an Audio Precision analyzer as an example. Part 1 discusses testing requirements for different audio devices, basic setup considerations and making level measurements.
This section provides step-by-step instructions to make the Big Six measurements using an Audio Precision analyzer and our home theater receiver DUT. The instructions are written assuming the use of a SYS-2722 audio analyzer.