Speech enhancement techniques using spectral subtraction have the drawback of generating residual noise with a musical character, so-called musical noise. We developed a new post-processing method for suppressing this musical residual noise. In this method, the auditory masking threshold is calculated twice, once before the spectral subtraction and once again afterwards. This ensures that all a...

Non-linearity in the human ear can cause audible distortion not present in the original signal. Such distortion is generated within the ear by inter-modulation of a spectral complex, itself containing possible masked components. When psychoacoustic codecs remove these supposedly masked components, the in-ear-generated distortion is also removed, and so our listening experience is modified. In t...

Current models of auditory masking in marine mammals oversimplify hearing in realistic environments. Systematic and progressive experiments using psychoacoustic methods will help us move "out of the ideal and in to the real" to gain a more complete view of potential auditory-masking effects in these animals.

Introduction: The study of noise has always been of interest to occupational health professionals as a harmful physical factor in the workplace. However, the psychological and psychoacoustic aspects of noise in the workplace have been less studied. This study has dealt with different colors of noise and their applications in psychoacoustics. Material and Methods: This review study was conducte...

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...

Increased demanding in the fields of noise pollution, human comfort and health finds its prints development automotive components. The paper presents general problems vibration vehicles. Main sources transfer paths are identified. sound quality – psychoacoustic aspects also described. In second part article, authors an example numerical experimental approach to undercarriage components testing ...

Acoustic metamaterials (AMMs) have become so far a resourceful solution for standard materials’ physical limitations, and their tuneable acoustic properties shown potential noise reduction absorption over materials. At the same time, building’s features’ ergonomics value has been discovered to play key role in indoor well-being. So AMM-based design features, such as windows, should be not only ...

Different methods to design digital filters aimed for equalization of loudspeaker/room responses are considered. Design of inverse filters is based on measured loudspeaker/room impulse responses combined with roomand psychoacoustic knowledge. Frequency dependent smoothing and nonlinear equalization effort is applied, and a new iterative method based on both timeand frequency domain criteria is ...

The IETF recently standardized the Opus codec as RFC6716. Opus targets a wide range of real-time Internet applications by combining a linear prediction coder with a transform coder. We describe the transform coder, with particular attention to the psychoacoustic knowledge built into the format. The result out-performs existing audio codecs that do not operate under real-time constraints.