Loudnessis

Loudnessis is a term used in some psychoacoustic discussions to describe a proposed scalar measure of perceived loudness that is intended to be robust to spectral content and playback system within a defined context. The concept aims to capture the viewer’s or listener’s experience of loudness on a single continuum rather than relying solely on physical sound pressure level or frequency-weighted metrics.

In concept, loudnessis would combine elements of traditional loudness scaling with normalization approaches designed to align judgments across frequency bands. Proponents describe it as a dimensionless quantity that maps changes in subjective loudness to proportional index changes, potentially offering more intuitive comparisons than conventional measures like SPL or spectral weighting alone. It is important to note that loudnessis is not an established standard but rather a topic of theoretical discussion and experimental exploration in some circles.

Measurement would depend on psychoacoustic methods, such as magnitude estimation or paired-comparison tasks, to derive a perceptual scale. Because the concept presumes a standardized listening context, loudnessis values would be sensitive to reference equipment, room acoustics, and listener demographics. As a result, there is no official specification or widely adopted methodology, and practical implementation remains experimental.

Critics argue that existing measures of loudness, including LUFS, Sones, and other perceptual weighting schemes, already approximate perceived loudness under many conditions. They caution that loudnessis could oversimplify or introduce context dependency if not carefully defined. Related topics include loudness, LUFS, Sones, and psychoacoustic scaling.