Speech quality assessment in wireless voip communication using deep belief network

ET Affonso, RD Nunes, RL Rosa, GF Pivaro… - Ieee …, 2018 - ieeexplore.ieee.org
Nowadays, the voice over Internet protocol (VoIP) communication service is widely adopted,
and it counts with many users across the world. However, the users' quality of experience is …

Speech quality assessment in wireless communications with mimo systems using a parametric model

DZ Rodríguez, RL Rosa, FL Almeida, G Mittag… - IEEE …, 2019 - ieeexplore.ieee.org
Communication service providers use specialized solutions to evaluate the quality of their
services. Also, different mechanisms that increase network robustness are incorporated in …

A speech quality classifier based on tree-cnn algorithm that considers network degradations

ST Vieira, RL Rosa, DZ Rodríguez - Journal of Communications …, 2020 - hrcak.srce.hr
Sažetak Many factors can affect the users' quality of experience (QoE) in speech
communication services. The impairment factors appear due to physical phenomena that …

Performance improvement of a non‐intrusive voice quality metric in lossy networks

R Dantas Nunes, R Lopes Rosa… - IET …, 2019 - Wiley Online Library
Voice quality assessment of phone calls is a relevant task for mobile service providers. In
this context, the main objective of this research is to provide a model that improves the …

Communication system and communication method

L Zhang, T Okamawari, T Fujii - US Patent 10,104,225, 2018 - Google Patents
Communication systems and communication methods capable of evaluating a voice quality
in a voice communication of a communication network and a presence or absence of a call …

Assessment of transmitted speech signal degradations in rician and rayleigh channel models

DZ Rodriguez, MJ da Silva, FJM Silva… - … Journal of Computer …, 2018 - infocomp.dcc.ufla.br
Telecommunications services monitoring is of paramount importance, network operators
must meet the expectations of their subscribers. On wireless communications, transmitted …

Improving a parametric model for speech quality assessment in wireless communication systems

DZ Rodríguez, GF Pívaro, RL Rosa… - 2018 26th …, 2018 - ieeexplore.ieee.org
Telecommunication operators need tools to evaluate and improve the quality of the their
services offered. In the case of telephony services, the speech quality perceived by the users …

Quantifying the quality improvement of mimo transmission systems in voip communication

DZ Rodríguez, GF Pívaro, RL Rosa… - 2018 26th …, 2018 - ieeexplore.ieee.org
Currently, Voice over IP (VoIP) communication service is widely used mainly because its
lower cost. However, the quality of a VoIP communication is lower than a fixed-line …

Call classification through analysis of DTMF events

N Gaubitch, S Strong, J Cornwell, H Kingravi… - US Patent …, 2019 - Google Patents
Systems, methods, and computer-readable media for call classification and for training a
model for call classification, an example method comprising: receiving DTMF informa tion …

Call classification through analysis of DTMF events

N Gaubitch, S Strong, J Cornwell, H Kingravi… - US Patent …, 2021 - Google Patents
Systems, methods, and computer-readable media for call classification and for training a
model for call classification, an example method comprising: receiving DTMF informa tion …