Download A Modified Algorithm for a Loudspeaker Line Array Multi-Lobe Control The creation of personal sound zones is an effective solution
for delivering personalized auditory experiences in shared spaces.
Their applications span various domains, including in-car entertainment, home and office environments, and healthcare functions.
This paper presents a novel approach for the creation of personal
sound zones using a modified algorithm for multi-lobe control in
loudspeaker line array. The proposed method integrates a pressurematching beamforming algorithm with an innovative technique for
reducing side lobes, enhancing the precision and isolation of sound
zones.
The system was evaluated through simulations and experimental tests conducted in a semi-anechoic environment and a
large listening room. Results demonstrate the effectiveness of the
method in creating two separate sound zones.
Download A Non-Uniform Subband Implementation of an Active Noise Control System for Snoring Reduction The snoring noise can be extremely annoying and can negatively
affect people’s social lives. To reduce this problem, active noise
control (ANC) systems can be adopted for snoring cancellation.
Recently, adaptive subband systems have been developed to improve the convergence rate and reduce the computational complexity of the ANC algorithm. Several structures have been proposed
with different approaches. This paper proposes a non-uniform subband adaptive filtering (SAF) structure to improve a feedforward
active noise control algorithm. The non-uniform band distribution
allows for a higher frequency resolution of the lower frequencies,
where the snoring noise is most concentrated. Several experiments
have been carried out to evaluate the proposed system in comparison with a reference ANC system which uses a uniform approach.