Results 51 to 60 of about 95,587 (363)

Simultaneous spectral and reverberation modelling of relativistic reflection in Mrk 335 [PDF]

open access: yes, 2015
We present an X-ray spectral and timing model to investigate the broad and variable iron line seen in the high flux state of Mrk 335. The model consists of a variable X-ray source positioned along the rotation axis of the black hole that illuminates the ...
Chainakun, P., Young, A. J.
core   +2 more sources

Reverberation Mapping of the Narrow-line Seyfert 1 Galaxy I Zwicky 1: Black Hole Mass [PDF]

open access: yesAstrophysical Journal, 2019
We report results of the first reverberation mapping campaign of I Zwicky 1 during 2014–2016, which showed unambiguous reverberations of the broad Hβ line emission in the varying optical continuum.
Ying-Ke Huang   +13 more
semanticscholar   +1 more source

Interaural Coherence Estimation for Speech Processing in Reverberant Environment

open access: yesApplied Sciences, 2020
Interaural coherence is used to quantify the effects of reverberation on speech, and previous studies applied the conventional method using all previous time data in the form of an infinite impulse response filter to estimate interaural coherence.
Seong-Hu Kim, Yong-Hwa Park
doaj   +1 more source

A signal enhancement method based on the reverberation statistical information

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
This paper proposes a reverberation suppression algorithm utilizing fractional lower-order moments based on statistical properties. As fractional lower-order moments can only be applied on symmetric α-stable random variables, the energy redistribution ...
Ge Yu, Jiangjiang Sun, Xiukun Li
doaj   +1 more source

Reverberation suppression algorithm for LS beamforming based on Wiener post-filter

open access: yesDianzi Jishu Yingyong, 2018
Reverberation causes speech signal time and frequency to blur, and speech is difficult to understand when serious. In order to improve the speech quality, this paper presents a least squares beamforming reverberation suppression algorithm with Wiener ...
Zhang Xiuzai   +3 more
doaj   +1 more source

Simulations of the OzDES AGN Reverberation Mapping Project [PDF]

open access: yes, 2015
As part of the OzDES spectroscopic survey we are carrying out a large scale reverberation mapping study of $\sim$500 quasars over five years in the 30 deg$^2$ area of the Dark Energy Survey (DES) supernova fields.
Banerji, Manda   +13 more
core   +2 more sources

Blind Estimation of Speech Transmission Index and Room Acoustic Parameters by Using Extended Model of Room Impulse Response Derived From Speech Signals

open access: yesIEEE Access, 2023
The speech transmission index (STI) and room acoustic parameters (RAPs) are essential metrics for assessing speech quality and predicting listening difficulty in a sound field.
Lijun Wang   +2 more
doaj   +1 more source

Review of Applications of the Laboratory for Electromagnetic Compatibility Infrastructure [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2020
This article provides a thorough description of a range of non-standard application cases in which EMC laboratories can be used other than those traditionally associated with this kind of facilities.
Kamil Staniec   +3 more
doaj   +1 more source

The effect of room acoustics on the sleep quality of healthy sleepers

open access: yesNoise and Health, 2016
Introduction: Noise is one of the factors that can seriously disturb sleep, and sound volume is an important factor in this context. One strategy involves avoiding exposure to sounds in the night, while entail the minimization of background noise in a ...
Ingo Fietze   +6 more
doaj   +1 more source

Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei: I. Comparing the Photoionization and Reverberation Techniques

open access: yes, 1999
The masses and emission-line region sizes of Active Galactic Nuclei (AGNs) can be measured by ``reverberation-mapping'' (measuring the lag of the emission-line luminosity after changes in the continuum). We use tis technique to calibrate similar size and
A. Wandel   +8 more
core   +2 more sources

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