Although a number of dereverberation methods have been reported, dereverberation is still a challenging problem especially when a single microphone is used. To overcome this problem, we proposed a harmonicity based dereverberation method (HERB). HERB can blindly estimate the inverse filter of a room transfer function based on the harmonicity of speech signals and dereverberate the signals. Howe...

The task of robustly detecting distant speech in low SNR environments for automatic speech recognition is examined using a two-stage approach based on two distinguishing features of speech, namely harmonicity and modulation frequency (MF). A modified metric for harmonicity is used as a gating function to a set of parallel classifiers that incorporate MFs computed on different frequency bands. P...

Although a number of dereverberation methods have been reported, dereverberation is still a challenging problem especially when a single microphone is used. To overcome this problem, we proposed a harmonicity based dereverberation method (HERB). HERB can blindly estimate the inverse filter of a room transfer function based on the harmonicity of speech signals and dereverberate the signals. Howe...

Congenital amusia is a neurodevelopmental disorder characterized by impaired pitch processing. Although pitch simultaneities are among the fundamental building blocks of Western tonal music, affective responses to simultaneities such as isolated dyads varying in consonance/dissonance or chords varying in major/minor quality have rarely been studied in amusic individuals. Thirteen amusics and th...

Natural soundscapes often contain multiple sound sources at any given time. Numerous studies have reported that in human observers, the perception and identification of concurrent sounds is paralleled by specific changes in cortical event-related potentials (ERPs). Although these studies provide a window into the cerebral mechanisms governing sound segregation, little is known about the subcort...

The Fixed Energy Sandpile with the deterministic Bak-Tang-Wiesenfeld rule on the two-dimensional torus, is studied in order to characterize existence and growth rate of the basins of periodic avalanches. The link between discrete harmonicity and invariant quantities, or toppling invariants, is shown. For an important subclass, these invariants are proven to be related to discrete harmonic polyn...

Acoustic and musical components of consonance dissonance perception have been recently identified. This study expands the range predictors by three analytical operations. In Experiment 1, we identify underlying structure a number central extracted from an extensive dataset chords using hierarchical cluster analysis. Four feature categories are identified largely confirming existing (roughness, ...

We prove phase-space mixing for solutions to Liouville’s equation integrable systems. Under a natural non-harmonicity condition, we obtain weak convergence of the distribution function with rate ⟨time⟩−1. In one dimension, also study case where this condition fails at certain energy, showing that still holds but slower rate. When and functions have higher regularity, can be faster.