Experimental results report that: (i) the proposed method outperforms the most recent and relevant state-of-the-art wheezing classification method by approximately 8% in accuracy (ii) unlike state-of-the-art methods based on classifiers, the proposed method uses an unsupervised approach that does not require any training.Īsthma chronic obstructive pulmonary disease constraint low-rank monophonic non-negative matrix factorization polyphonic spectral pattern spectrogram wheezing. The second contribution automatically analyzes the harmonic structure of the energy distribution associated with the estimated wheezing spectrogram to classify the type of wheezing. In music, monophony is the simplest of musical textures, consisting of a melody (or 'tune'), typically sung by a single singer or played by a single instrument player (e.g., a flute player) without accompanying harmony or chords. Unlike most of the classification algorithms in which interference caused by normal respiratory sounds is not addressed in depth, our first contribution proposes a novel Constrained Low-Rank Non-negative Matrix Factorization (CL-RNMF) approach, never applied to classification of wheezing as far as the authors' knowledge, which incorporates several constraints (sparseness and smoothness) and a low-rank configuration to extract the wheezing spectral content, minimizing the acoustic interference from normal respiratory sounds. A monophonic texture refers to music with a single melodic line (no harmony or counterpoint) sounding the same thing at the same timewhether played or sung, performed on a single instrument or by a voice or voices and instruments playing in unison. Signs that display texts constituting a complete translation (or transliteration) of each other are homophonic signs 2. From a physician's point of view, monophonic and polyphonic wheezing classification is still a challenging topic in biomedical signal processing since both types of wheezes are sinusoidal in nature. Beside above, what are the 4 types of musical texture In musical terms, particularly in the fields of music history and music analysis, some common terms for different types of texture are: Monophonic. Transferring the notions ‘monophonic,’ ‘homophonic’ and ‘polyphonic’ to language on signs, the author distinguishes equivalent categories: 1. It refers to a piece of music with one layer and no accompaniments. Monophonic Texture Monophonic is the most basic and simplest. The appearance of wheezing sounds is widely considered by physicians as a key indicator to detect early pulmonary disorders or even the severity associated with respiratory diseases, as occurs in the case of asthma and chronic obstructive pulmonary disease. Monophonic Polyphonic Homophonic Hetrophonic As you learn these new terms you will listen to music with a better understanding of how the music is put together.
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