Extending sharpness calculation for an alternative loudness metric input.

Human Echolocation in Static Situations: Auditory Models of Detection Thresholds for Distance, Pitch, Loudness and Timbre

We investigated, by using auditory models, how three perceptual parameters, loudness, pitch and sharpness, determine human echolocation. We used acoustic recordings from two previous studies, both from stationary situations, and their resulting perceptual data as input to our analysis. An initial analysis was on the room acoustics of the recordings. The parameters of interest were sound pressur...

Study of Noise Loudness and Sharpness Effects on Cognitive Performance on Male Students of Tehran University of Medical Sciences

Introduction: The noise could affect some aspects of human health, including the cognitive performance. In addition to sound pressure level and exposure time, the psychoacoustic features of noise may cause destructive effects on humans. A few recent studies have been conducted on effect of sound quality on cognitive performance. This study aims to find the noise loudness and sharpness levels as...

Sharpness metric for no-reference image visual quality assessment

This paper presents a novel sharpness metric for color images. The proposed metric can be used for no-reference assessment of image visual quality. The metric basically relies on local power of wavelet transform high-frequency coefficients. It also takes into account a possibility of the presence of macrophotography and portrait photography effects in an image where the image part (usually cent...

Just Noticealbe Difference of Sound Quality Metrics of Refrigerator Noise

A prediction model for the sound quality of refrigerator noise was proposed by investigating subjective and objective attributes of the noise [Jeon et al. (2007) Appl. Acoust.]. In the present study, the just noticeable difference (JND) of each sound quality metric loudness, sharpness, roughness and fluctuation strength which constitute the prediction model was investigated. Loudness of recorde...

Implementing sharpness using specific loudness calculated from the "Procedure for the Computation of Loudness of Steady Sounds"