Results 21 to 30 of about 3,698 (171)

Performance Study of Objective Speech Quality Measurement for Modern Wireless-VoIP Communications

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2009
Wireless-VoIP communications introduce perceptual degradations that are not present with traditional VoIP communications. This paper investigates the effects of such degradations on the performance of three state-of-the-art standard objective quality ...
Tiago H. Falk, Wai-Yip Chan
doaj   +2 more sources

Multiple Transcoding Impact on Speech Quality in Ideal Network Conditions

open access: yesAdvances in Electrical and Electronic Engineering, 2015
This paper deals with the impact of transcoding on the speech quality. We have focused mainly on the transcoding between codecs without the negative influence of the network parameters such as packet loss and delay.
Martin Mikulec   +3 more
doaj   +1 more source

Catálogo sistemático dos pólens das plantas arbóreas do Brasil Meridional: IV - Thymelaeaceae, Lythraceae, Lecythidaceae, Rhizophoraceae e Combretaceae

open access: yesMemorias do Instituto Oswaldo Cruz, 1965
Es wurden pollenmorphologisch diejenigen Arten der vorliegenden Familien untersucht, welche als Baeume in den suedbrasilianischen Waeldern auftreten, mit Ausnahme der krautigen Heimia myrtifolia. Gekennzeichnet durch drei einfache Colpori laesst sich die
Ortrud Monika Barth   +1 more
doaj   +1 more source

Speech Quality Measurement of GSM Infrastructure Built on USRP N210 and OpenBTS Project

open access: yesAdvances in Electrical and Electronic Engineering, 2014
The paper deals with the methodology for speech quality measuring in GSM networks using Perceptual Evaluation of Speech Quality (PESQ). The paper brings results of practical measurement of own GSM network build on the Universal Software Radio Peripheral (
Marcel Fajkus   +4 more
doaj   +1 more source

End-to-End Multi-Task Denoising for joint SDR and PESQ Optimization [PDF]

open access: yes, 2023
Supervised learning based on a deep neural network recently has achieved substantial improvement on speech enhancement. Denoising networks learn mapping from noisy speech to clean one directly, or to a spectrum mask which is the ratio between clean and ...
El-Khamy, Mostafa   +2 more
core   +1 more source

Errata

open access: yesPesquisa Florestal Brasileira, 2019
Na nota científica "Efeitos do manejo sustentável da Caatinga sob os atributos físicos do solo", DOI: 10.4336/2018.pfb.38e201801581, publicado na Pesquisa Florestal Brasileira, v. 38, 2018, no rodapé da página, onde se lia: “Pesq. flor.
Patrícia Póvoa de Mattos
doaj   +1 more source

Amplitude and Phase Information Interaction for Speech Enhancement Method

open access: yesApplied Sciences, 2023
In order to improve the speech enhancement ability of FullSubNet model, an improved method FullSubNet-pMix is proposed. Specifically, pMix module is added to the structure of full-band frequency domain information processing, which realizes the ...
Qiuyu Yu, Ruohua Zhou
doaj   +1 more source

NMF-based Improvement of DNN and LSTM Pre-Training for Speech Enhancemet [PDF]

open access: yesInternational Journal of Information and Communication Technology Research, 2023
A novel pre-training method is proposed to improve deep-neural-networks (DNN) and long-short-term-memory (LSTM) performance, and reduce the local minimum problem for speech enhancement.
Razieh Safari Dehnavi, Sanaz Seyedin
doaj  

Components loss for neural networks in mask-based speech enhancement

open access: yesEURASIP Journal on Audio, Speech, and Music Processing, 2021
Estimating time-frequency domain masks for single-channel speech enhancement using deep learning methods has recently become a popular research field with promising results.
Ziyi Xu   +3 more
doaj   +1 more source

Pre-Exercise Screening Questionnaire: tradução do instrumento de triagem relacionado à COVID-19

open access: yesRevista Brasileira de Atividade Física e Saúde, 2020
A pandemia causada pela doença do coronavírus 2019 (COVID-19) e as medidas de distanciamento social provocaram reduções nos níveis de atividade física das pessoas.
Iaggo Raphael David Santos   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy