Results 11 to 20 of about 251,049 (300)

Sub-band coding for audio signals using Matlab

Journal of Physics: Conference Series, 2018
Darwin O. Cardozo, Sergio Martínez Campo, José Manjarrés, Winston Percybrooks   +3 more
openalex   +2 more sources

Photophore Distribution and Enzymatic Diversity Within the Photogenic Integument of the Cookie-Cutter Shark Isistius brasiliensis (Chondrichthyes: Dalatiidae)

Frontiers in Marine Science, 2021
The cookie-cutter shark Isistius brasiliensis (Squaliformes: Dalatiidae) is a deep-sea species that emits a blue luminescence ventrally, except at the level of a black band located beneath the jaw.
Jérôme Delroisse, Laurent Duchatelet, Patrick Flammang, Jérôme Mallefet   +3 more
doaj   +1 more source

Toward Sub‐Terahertz: Space‐Time Coding Metasurface Transmitter for Wideband Wireless Communications

Advanced Science, 2023
A space‐time coding metasurface (STCM) operating in the sub‐terahertz band to construct new‐architecture wireless communication systems is proposed. Specifically, a programmable STCM is designed with varactor‐diode‐tuned metasurface elements, enabling ...
Yujie Liu, Yu Wang, Xiaojian Fu, Lei Shi, Fei Yang, Jiang Luo, Qun Yan Zhou, Yuan Fu, Qi Chen, Jun Yan Dai, Lei Zhang, Qiang Cheng, Tie Jun Cui   +12 more
doaj   +1 more source

Polarization-resolved ultrafast all-optical terahertz micro-grating array modulator based on Weyl semimetallic microfilm towards 6G technology

Results in Physics, 2023
The 6th generation (6G) of communication technology, defines 0.1–1 THz as the communication band. As a result, ultrafast modulation and multi-dimensional resolution coding technologies in the terahertz band pose a big challenge.
Min Zhang, Run Chen, Qi Song, Zhongze Peng, Ling Li, Xuejuan Hu, Bingyuan Zhang, Lei Huang, Shuangchen Ruan   +8 more
doaj   +1 more source

Reversible Integer-to-Integer Wavelet Filter Design for Lossless Image Compression

IEEE Access, 2020
In this paper, factors that influence the lossless compression efficiency of reversible integer-tointeger (ITI) wavelet filters are presented. It is observed that there is a converged region for the bitrate of the compressed subbands.
Jianyu Lin
doaj   +1 more source

Research on Compressed Sensing Spectrometry Based on Electro-Optical Transmittance Coding

Applied Sciences, 2022
To develop fast and integrated spectrometry, we present a new method of compressed sensing spectrometry based on electro-optical transmittance coding. A LiNbO3 electro-optic modulator was applied to a directly compressed measurement code in the spectral ...
Shuang Wang, Kewu Li, Xie Han, Zhibin Wang   +3 more
doaj   +1 more source

Implementing the European Space Agency’s SentiNel Application Platform’s Open-Source Python Module for Differential Synthetic Aperture Radar Interferometry Coseismic Ground Deformation from Sentinel-1 Data

Remote Sensing, 2023
Differential SAR Interferometry is a largely exploited technique to study ground deformations. A key application is the detection of the effects promoted by earthquakes, including detailed variations in ground deformations at different scales.
Martina Occhipinti, Filippo Carboni, Shaila Amorini, Nicola Paltriccia, Carlos López-Martínez, Massimiliano Porreca   +5 more
doaj   +1 more source

Deep Image Compression in the Wavelet Transform Domain Based on High Frequency Sub-Band Prediction

IEEE Access, 2019
In this paper, we propose to use deep neural networks for image compression in the wavelet transform domain. When the input image is transformed from the spatial pixel domain to the wavelet transform domain, one low-frequency sub-band (LF sub-band) and ...
Chuxi Yang, Yan Zhao, Shigang Wang
doaj   +1 more source

Image Compression Using Tap 9/7 Wavelet Transform and Quadtree Coding Scheme

مجلة بغداد للعلوم, 2011
This paper is concerned with the design and implementation of an image compression method based on biorthogonal tap-9/7 discrete wavelet transform (DWT) and quadtree coding method.
Baghdad Science Journal
doaj   +1 more source

ECG data compression by sub-band coding [PDF]

Electronics Letters, 1991
A data compression technique is presented for discrete-time electrocardiogram signals. The single lead electrocardiogram signal is decomposed into several multiresolution subsignals by using a quadrature mirror filter bank. The resultant subsignals are compressed according to their frequency contents using various coding methods, including a discrete ...
Aydin, M.C., Cetin, A.E., Koymen H.
openaire   +2 more sources