Results 1 to 10 of about 153,573 (265)

Residual feedback suppression with extended model-based postfilters

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2021
When designing closed-loop electro-acoustic systems, which can commonly be found in hearing aids or public address systems, the most challenging task is canceling and/or suppressing the feedback caused by the acoustic coupling of the transducers of such ...
Marco Gimm   +2 more
doaj   +1 more source

Fast and precise underwater transducer characterisation utilising adaptive system identification

open access: yesIET Radar, Sonar & Navigation, 2023
Characterising underwater acoustic transducers is essential to optimal signal processing in sound navigation and ranging systems. Precise characterisation allows for equalisation of the input and output hardware, resulting in improved performance of the ...
Bastian Kaulen, Gerhard Schmidt
doaj   +1 more source

Orthogonal Time Frequency Space Modulation Based on the Discrete Zak Transform

open access: yesEntropy, 2022
In orthogonal time frequency space (OTFS) modulation, information-carrying symbols reside in the delay-Doppler (DD) domain. By operating in the DD domain, an appealing property for communication arises: time-frequency (TF) dispersive channels encountered
Franz Lampel   +3 more
doaj   +1 more source

Fast beampattern evaluation by polynomial rooting [PDF]

open access: yesAdvances in Radio Science, 2011
Current automotive radar systems measure the distance, the relative velocity and the direction of objects in their environment. This information enables the car to support the driver.
P. Häcker, S. Uhlich, B. Yang
doaj   +1 more source

Context-Unsupervised Adversarial Network for Video Sensors

open access: yesSensors, 2022
Foreground object segmentation is a crucial first step for surveillance systems based on networks of video sensors. This problem in the context of dynamic scenes has been widely explored in the last two decades, but it still has open research questions ...
Gemma Canet Tarrés, Montse Pardàs
doaj   +1 more source

Single snapshot DOA estimation [PDF]

open access: yesAdvances in Radio Science, 2010
In array signal processing, direction of arrival (DOA) estimation has been studied for decades. Many algorithms have been proposed and their performance has been studied thoroughly.
P. Häcker, B. Yang
doaj   +1 more source

Real‐time capable multiple‐input–multiple‐output SONAR systems—An algorithmic approach

open access: yesIET Radar, Sonar & Navigation, 2021
In recent years, significant effort has been allocated to research on multiple‐input–multiple‐output (MIMO) sound navigation and ranging (SONAR) and RADAR systems.
Thorben Kaak   +2 more
doaj   +1 more source

A validated finite element model for room acoustic treatments with edge absorbers

open access: yesActa Acustica, 2023
Porous acoustic absorbers have excellent properties in the low-frequency range when positioned in room edges, therefore they are a common method for reducing low-frequency reverberation.
Kraxberger Florian   +5 more
doaj   +1 more source

Validation of IMU-based gait event detection during curved walking and turning in older adults and Parkinson’s Disease patients

open access: yesJournal of NeuroEngineering and Rehabilitation, 2021
Background Identification of individual gait events is essential for clinical gait analysis, because it can be used for diagnostic purposes or tracking disease progression in neurological diseases such as Parkinson’s disease.
Robbin Romijnders   +5 more
doaj   +1 more source

Processing Chain for Localization of Magnetoelectric Sensors in Real Time

open access: yesSensors, 2021
The knowledge of the exact position and orientation of a sensor with respect to a source (distribution) is essential for the correct solution of inverse problems.
Christin Bald, Gerhard Schmidt
doaj   +1 more source

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