Real-time separation of non-stationary sound fields on spheres

The Journal of the Acoustical Society of America
Fei MaThushara D Abhayapala

Abstract

The sound field separation methods can separate the target field from the interfering noises, facilitating the study of the acoustic characteristics of the target source, which is placed in a noisy environment. However, most of the existing sound field separation methods are derived in the frequency-domain, thus they are best suited for separating stationary sound fields. In this paper, a time-domain sound field separation method is developed that can separate the non-stationary sound field generated by the target source over a sphere in real-time. A spherical array sets up a boundary between the target source and the interfering sources, such that the outgoing field on the array is only generated by the target source. The proposed method decomposes the pressure and the radial particle velocity measured by the array into spherical harmonic coefficients, and recovers the target outgoing field based on the time-domain relationship between the decomposition coefficients and the theoretically derived spatial filter responses. Simulations show the proposed method can separate non-stationary sound fields both in free field and room environments, and over a longer duration with small errors. The proposed method could serve as a founda...Continue Reading

References

Aug 3, 2000·The Journal of the Acoustical Society of America·J W ParkinsJ Tichy
Apr 6, 2007·The Journal of the Acoustical Society of America·Finn Jacobsen, Virginie Jaud
Jun 7, 2007·The Journal of the Acoustical Society of America·Christophe LangrenneAlexandre Garcia
Mar 19, 2008·The Journal of the Acoustical Society of America·Chuan-Xing BiJian Chen
Sep 11, 2009·The Journal of the Acoustical Society of America·Christophe LangrenneAlexandre Garcia
Jan 12, 2010·The Journal of the Acoustical Society of America·Manuel MelonAlexandre Garcia
Feb 23, 2012·The Journal of the Acoustical Society of America·Chuan-Xing Bi, J Stuart Bolton
Mar 20, 2012·The Journal of the Acoustical Society of America·Xiao-Zheng ZhangJean-Claude Pascal
Dec 13, 2012·The Journal of the Acoustical Society of America·Efren Fernandez-GrandeQuentin Leclère
Jul 19, 2013·The Journal of the Acoustical Society of America·Yacine BraikiaAlexandre Garcia
Jun 9, 2014·The Journal of the Acoustical Society of America·Chuan-Xing BiXiao-Zheng Zhang
Feb 24, 2015·The Journal of the Acoustical Society of America·Stéphanie LobréauManuel Melon
Mar 5, 2016·The Journal of the Acoustical Society of America·Chuan-Xing BiXiao-Zheng Zhang
Nov 15, 2018·The Journal of the Acoustical Society of America·Fei MaThushara D Abhayapala

❮ Previous
Next ❯

Citations


❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

The Journal of the Acoustical Society of America
Christophe LangrenneAlexandre Garcia
The Journal of the Acoustical Society of America
Efren Fernandez-GrandeQuentin Leclère
The Journal of the Acoustical Society of America
Yacine BraikiaAlexandre Garcia
© 2021 Meta ULC. All rights reserved