Abstract:
This paper presents a novel computational framework for blind audio source separation (BASS) that enhances existing
Independent Component Analysis (ICA) with an adaptive swarm intelligence algorithm (ASIA). The proposed ASIA methodology
addresses the challenges of optimal parameter determination in stochastic optimization process of swarm intelligence approach for an
estimation of the precise unmixing matrix. In order to ensure the separated signals are as independent as possible in BASS task, a
complex and non-convex optimization problem is formulated where the unmixing matrix is customized to minimize mutual
information and maximize the non-Gaussianity of the signals. To solve our optimization problem the study introduces a weighted
combination of negentropy and cross-correlation in the fitness function of the proposed ASIA. This unique approach of proposed
framework ensures maximum statistical independence of the separated signals from the unknown mixed signals. Overall analysis of
experimental outcome demonstrate that the proposed framework exhibits superior blind separation of mixed audio signals,
showcasing enhanced computational efficiency and de-mixing accuracy compared to conventional baseline approaches. This paper
has presented unique approach to blind audio source separation in over-determined scenario that combines adaptive
PSO with ICA. The main goal of the proposed approach was to find an optimal de-mixing matrix that could efficiently
separate mixed signals. The presented approach incorporates an adaptive inertia weight and velocity clamping
mechanism into the traditional PSO, which effectively addresses the challenges associated with parameter
determination in stochastic optimization techniques.
