The parameters of moving-coil loudspeaker drivers are typically determined using direct electrical excitation and measurement. However, as electro-mechano-acoustical devices, their parameters should also follow from suitable mechanical or acoustical evaluations. This paper presents the theory of an acoustical method of excitation and measurement using normal-incidence sound transmission through a baffled driver as a plane-wave tube partition. Analogous circuits enable key parameters to be extracted from measurement results in terms of open and closed-circuit driver conditions. Associated tools are presented that facilitate adjacent field decompositions and derivations of sound transmission coefficients (in terms of driver parameters) directly from the circuits. The paper also clarifies the impact of nonanechoic receiving tube terminations and the specific benefits of downstream field decompositions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1121/1.4803900 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clinical and ultrasound features of fibrous pseudotumor of tunica vaginalis of the testis: eight cases and literature review.
Front Oncol
December 2024
Department of Ultrasound, West China Hospital of Sichuan University, Chengdu, Sichuan, China.
Objective: To investigate the clinical and ultrasound features of fibrous pseudotumor of tunica vaginalis of the testis.
Methods: The clinical and ultrasound features of fibrous pseudotumor of the tunica vaginalis diagnosed by pathology in West China Hospital of Sichuan University from 2006 to 2023 were retrospectively analyzed.
Results: The study included 8 patients diagnosed with fibrous pseudotumor of the tunica vaginalis.
Multivariate Techniques for Monitoring Susceptible, Exposed, Infected, Recovered, Death, and Vaccination Model Parameters for the COVID-19 Pandemic for Qatar.
Int J Environ Res Public Health
November 2024
Department of Liberal Arts and Science, VCU in Qatar, Doha P.O. Box 1129, Qatar.
The COVID-19 pandemic has highlighted the crucial role of health sector decision-makers in establishing and evaluating effective treatment and prevention policies. To inform sound decisions, it is essential to simultaneously monitor multiple pandemic characteristics, including transmission rates, infection rates, recovery rates (which indicate treatment efficacy), and fatality rates. This study introduces an innovative application of existing methodologies: the Multivariate Exponentially Weighted Moving Average (MEWMA) and Multivariate Cumulative Sum (MCUSUM) control charts (CCs), used for monitoring the parameters of the Susceptible, Exposed, Infected, Recovered, Death, and Vaccination (SEIRDV) model.
View Article and Find Full Text PDFA New Genus of Andean Katydid with Unusual Pronotal Structure for Enhancing Resonances.
Biology (Basel)
December 2024
School of Environmental and Life Sciences, University of Lincoln, Lincoln LN6 7DL, Lincolnshire, UK.
Katydids employ acoustic signals to communicate with others of their species and have evolved to generate sounds by coupling the anatomical structures of their forewings. However, some species have evolved to implement an additional resonance mechanism that enhances the transmission and sound pressure of the acoustic signals produced by the primary resonators. Secondary resonators, such as burrow cavities or horn-shaped structures, are found in the surrounding environment but could also occur as anatomical modifications of their bodies.
View Article and Find Full Text PDFSimple reaction time to visual and auditory stimulation in glaucoma.
Eur J Ophthalmol
January 2025
University of Lille, Inserm, CHU Lille, UMR-S 1172 - Lille Neurosciences and Cognition, CNRS, 59000 Lille, France.
Background/objectives: Glaucoma can impact the ability to perform daily life activities such as driving. In such tasks, reaction time is critical to detect hazards. Understanding the modalities that affect response times is thus essential for clinical care.
View Article and Find Full Text PDFVoluntary Medical Male Circumcision's (VMMC) strategy for HIV prevention in Sub-Saharan Africa, prevalence, risks, costs, benefits and best practice: A scoping review study protocol of progress and unfolding insights.
PLoS One
December 2024
Department of General Nursing Science, Faculty of Health Sciences, University of Eswatini, Mbabane, Eswatini.
Campaigns to scale up Voluntary Medical Male Circumcision (VMMC) for the prevention of HIV transmission has been going on for years in selected Southern African countries, following recommendations from the World Health Organisations. Despite significant strides made in the initiative and its proven benefits, controversies surrounding the strategy have never ceased, and its future remains uncertain especially as some countries near their initial targets. Over the years, as the campaigns unfolded, a lot of insights have been generated in favour of continuing the VMMC campaigns, although some insights portray the impression that the strategy is not worthy of the risks and effort required, or that enough has been done, as the targets have now been achieved.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!