Sound quality, as is evaluated in test and measurement, is the attempt to objectively qualify the quality of sound as it relates to human hearing standards. Sound quality is important in assessing the quality of a product. This is particularly true of products where the noise of the product helps define its performance or perceived performance such as vehicles, mobile phones, audio equipment, etc.
Sound quality often involves measuring sound and applying various psychoacoustic metrics to the signal. The most common measurement of sound quality is loudness. Loudness attempts to determine what a person means by ‘loud’, accounting for nonlinearities and masking. Sharpness measures a parameter similar to loudness, but attempts to measure how pleasant a sound is. Fluctuation Strength characterizes low frequency amplitude modulation. Roughness (sometimes referred to as harshness) addresses higher frequency modulation, for example, a “buzzing” sound. Annoyance, which is unitless and is a combination of loudness, sharpness, fluctuation strength, and roughness, attempts to provide a comprehensive measure of a person’s perception of the sound being experienced.
Data Physics products contain powerful graphics, data management and export capabilities, providing users with a previously unavailable tool by which a product’s sound quality may be measured and enhanced. Explore SignalCalc Dynamic Signal Analyzers for analyzers capable of advanced sound quality.