Ideal Binary Masking (IdBM) is considered as the primary goal of computational auditory scene analysis. This binary masking criterion provides a time-frequency representation of noisy speech and retains regions where the speech dominates the noise while discarding regions where the noise is dominant. Several studies have shown the benefits of IdBM for normal hearing and hearing-impaired listene...

This paper introduces a class of high-speed wide-band frequency masking recursive digital filters with approximately linear-phase. These filters feature a high maximal sample frequency, low computational complexity, and good numerical properties.

Electrophysiological recordings in primates indicate that visual gamma contains distinct broad- and narrowband components that reflect different neuronal processes. Evidence suggests that cross-orientation masking of luminance-defined gratings should differentially modulate these two components. To test this we measured the effect of cross-orientation masking on the gamma response in 12 human p...

Studio engineers use a variety of techniques to reduce frequency masking between instruments when mixing multitrack musical recordings. This study evaluates the efficacy of three techniques, namely mirrored equalization, frequency spectrum sharing and stereo panning, against their variations to confirm the veracity of accepted practice. Mirrored equalisation involves boosting one instrument and...

In this work we consider adaptive bit allocation for perceptual coding of narrowband audio signals at low rates (down to 8 kb/s). Two different strategies are used to shape the audible noise spectrum. In one approach, the quantization noise spectrum is shaped in parallel with the masking threshold curve. This way the noise is equally audible in different frequency bands. The other approach gene...

This paper describes a polyphonic note detection system incorporating a simple masking technique that can accurately transcribe chords and polyphonic piano music. The system, developed in MATLAB, will take input files in .wav format. The music is segmented by using Note Average Energy (NAE) onset detection. Onsets are used to segment the music into note windows which are then analysed using the...

Previous research using a backward recognition masking paradigm revealed that the perceived duration of a target increased with actual target duration, the time available for processing the target, and the duration of the mask. A model was developed which submits that the percept of target duration increases during the presentation of the target and the following silent interval. The mask termi...

The experiments presented in this paper explore the hypothesis that cochlear gain is reduced, in a frequency-specific manner, over the course of a sound (called a "precursor") which was designed to activate the medial olivo-cochlear reflex (MOCR). Psychophysical tuning curves (PTCs) and off-frequency growth of masking (GOM) functions were measured with two precursors. The on-frequency precursor...

There are 8 cycle/deg ripples or oscillations in performance as a function of location near Mach bands in experiments measuring Mach bands' masking effects on random polarity signal bars. The oscillations with increments are 180 degrees out of phase with those for decrements. The oscillations, much larger than the measurement error, appear to relate to the weighting function of the spatial-freq...

The effects of target tone frequency, presence of a masking stimulus, and subject sex on the auditory ERP were studied with an 'oddball' paradigm. P300 latency became shorter (about 15 msec) as the difference between the standard (1000 Hz) and target tone frequency increased (1500, 2000, 4000 Hz) but became longer (about 10 msec) with the presence of a white noise masking stimulus. Similar resu...