Results 91 to 100 of about 34,890 (263)

Efficient Multichannel NLMS Implementation for Acoustic Echo Cancellation

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2007
An acoustic echo cancellation structure with a single loudspeaker and multiple microphones is, from a system identification perspective, generally modelled as a single-input multiple-output system.
Fredric Lindstrom   +2 more
doaj   +1 more source

A loudspeaker-driven clarinet for educational purpose

open access: yesActa Acustica
This paper describes a toy device, namely an electroacoustic clarinet, which was designed for educational purposes. It consists of a loudspeaker connected through a cavity to a duct drilled with several side holes. Unlike what happens in a clarinet where
Penelet Guillaume   +2 more
doaj   +1 more source

Superdirectional Parametric Array Loudspeaker

open access: yesRevista Elektrón, 2019
In this work, a directional loudspeaker, also known as a parametric array loudspeaker (PAL), is designed and constructed. The operation is based on the phenomenon called self-demodulation that happens when high-frequency beams interact in a viscous ...
Axel Montes de Oca   +3 more
doaj  

CSI2Dig: Recovering Digit Content from Smartphone Loudspeakers Using Channel State Information [PDF]

open access: yesarXiv
Eavesdropping on sounds emitted by mobile device loudspeakers can capture sensitive digital information, such as SMS verification codes, credit card numbers, and withdrawal passwords, which poses significant security risks. Existing schemes either require expensive specialized equipment, rely on spyware, or are limited to close-range signal acquisition.
arxiv  

Miniature Loudspeakers for Personal Radio Receivers [PDF]

open access: bronze, 1957
John C. Bleazey   +2 more
openalex   +1 more source

Home - About - Disclaimer - Privacy