Joint DOA and Multi-Pitch Estimation Via Block Sparse Dictionary Learning
Kronvall, Ted; Adalbjörnsson, Stefan Ingi; Jakobsson, Andreas (2014). Joint DOA and Multi-Pitch Estimation Via Block Sparse Dictionary Learning European Signal Processing Conference. 22nd European Signal Processing Conference - EUSIPCO 2014. Lissabon, Portugal: EURASIP
Conference Proceeding/Paper
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Published
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English
Authors:
Kronvall, Ted
;
Adalbjörnsson, Stefan Ingi
;
Jakobsson, Andreas
Department:
Mathematical Statistics
Statistical Signal Processing Group
Biomedical Modelling and Computation
Research Group:
Statistical Signal Processing Group
Biomedical Modelling and Computation
Abstract:
In this paper, we introduce a novel sparse method for joint estimation of the direction of arrivals (DOAs) and pitches of a set of multi-pitch signals impinging on a sensor array. Extending on earlier approaches, we formulate a novel dictionary learning framework from which an estimate is formed without making assumptions on the model orders. The proposed method alternatively uses a block sparse approach to estimate the pitches, using an alternating direction method of multipliers framework, and alternatively a nonlinear least squares approach to estimate the DOAs. The preferable performance of the proposed algorithm, as compared to earlier methods, is shown using numerical examples.
Keywords:
multi-pitch estimation ;
group sparsity ;
block sparsity ;
dictionary learning ;
ADMM ;
direction-of-arrival
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