641 search results - page 87 / 129 » Spectral Audio Signal Processing |
ICASSP
2010
IEEE
13 years 9 months ago
2010
IEEE
Nonnegative matrix factorization (NMF) is a widely-used tool for obtaining low-rank approximations of nonnegative data such as digital images, audio signals, textual data, financ...
ICASSP
2011
IEEE
13 years 17 days ago
2011
IEEE
We propose a new statistical model, named Hierarchical Topic Trajectory Model (HTTM), for acquiring a dynamically changing topic model that represents the relationship between vid...
ICASSP
2011
IEEE
13 years 17 days ago
2011
IEEE
Gaussian mixture models (GMMs) are commonly used to model the spectral distribution of speech signals for text-independent speaker verification. Mean vectors of the GMM, used in c...
AVSS
2007
IEEE
14 years 3 months ago
2007
IEEE
This paper describes an audio-based video surveillance system which automatically detects anomalous audio events in a public square, such as screams or gunshots, and localizes the...
ICASSP
2011
IEEE
13 years 17 days ago
2011
IEEE
Non-negative Matrix Factorization (NMF) has found use in single channel separation of audio signals, as it gives a parts-based decomposition of audio spectrograms where the parts ...