Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Jiří Přibil"'
Publikováno v:
Engineering Proceedings, Vol 58, Iss 1, p 108 (2023)
Many factors affect photoplethysmography (PPG) signal quality, one of them being the actual temperature of the skin surface. This paper describes the process of design, realization, and testing of a special wearable PPG sensor prototype with the cont
Externí odkaz:
https://doaj.org/article/9ad86da91f66458d8624b2d168278dec
Publikováno v:
Engineering Proceedings, Vol 27, Iss 1, p 51 (2022)
The paper describes the development, testing, and verification of practical usability of the indirect cuffless method for estimation of arterial blood pressure (ABP) values from the photo-plethysmography (PPG) signal sensed by the optical PPG sensor.
Externí odkaz:
https://doaj.org/article/3a80061a736c40c0b22b7c4842ee737f
Publikováno v:
Sensors, Vol 22, Iss 10, p 3769 (2022)
This paper is focused on investigation of three developed prototypes of sensors based on the photoplethysmography (PPG) principle for continual measurement of the PPG signal in the magnetic field environment with the inherent radiofrequency and elect
Externí odkaz:
https://doaj.org/article/e4447bec12a541d3892c079363ca2081
Publikováno v:
Applied Sciences, Vol 11, Iss 24, p 11748 (2021)
This paper deals with two modalities for stress detection and evaluation—vowel phonation speech signal and photo-plethysmography (PPG) signal. The main measurement is carried out in four phases representing different stress conditions for the teste
Externí odkaz:
https://doaj.org/article/6b469b3ce9f640ed868ee87ccdc98a97
Publikováno v:
Applied Sciences, Vol 11, Iss 1, p 2 (2020)
The paper focuses on the description of a system for the automatic evaluation of synthetic speech quality based on the Gaussian mixture model (GMM) classifier. The speech material originating from a real speaker is compared with synthesized material
Externí odkaz:
https://doaj.org/article/46203629ba994a0e9da51ac05aa0bb48
Publikováno v:
Sensors, Vol 20, Iss 12, p 3532 (2020)
The paper describes first-step experiments with parallel measurement of cardiovascular parameters using a photoplethysmographic optical sensor and standard portable blood pressure monitors in different situations of body relaxation and stimulation. C
Externí odkaz:
https://doaj.org/article/8e80e112af2b4981bec054d047c87362
Publikováno v:
Sensors, Vol 19, Iss 19, p 4198 (2019)
A system of gradient coils of the magnetic resonance imaging (MRI) device produces significant vibration and noise. Energetic relations of these phenomena are analyzed depending on MRI scan parameters (sequence type, repetition time (TR), echo time (
Externí odkaz:
https://doaj.org/article/966d2ccfcfce40888934e814e506da6f
Publikováno v:
Sensors, Vol 18, Iss 4, p 1112 (2018)
This article compares open-air and whole-body magnetic resonance imaging (MRI) equipment working with a weak magnetic field as regards the methods of its generation, spectral properties of mechanical vibration and acoustic noise produced by gradient
Externí odkaz:
https://doaj.org/article/f26a1c331d154e7ca559b1745be1eec7
Publikováno v:
Measurement Science Review. 22:80-83
This article describes the analysis of the NMR (Nuclear Magnetic Resonance) stabilizer signal. Magnetic field of the standard is created using an electromagnet. Sufficiently high stability of the magnetic field is achieved with the help of a stabiliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6de4a5bab0e79b9e8ab940a1922aea21
https://doi.org/10.2478/msr-2022-0010
https://doi.org/10.2478/msr-2022-0010
Publikováno v:
Journal of Electrical Engineering. 71:78-86
Quality of speech synthesis is a crucial issue in comparison of various text-to-speech (TTS) systems. We proposed a system for automatic evaluation of speech quality by statistical analysis of temporal features (time duration, phrasing, and time stru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9951a70deee288b01668ad6781a892e
https://doi.org/10.2478/jee-2020-0012
https://doi.org/10.2478/jee-2020-0012