Results 11 to 20 of about 233,212 (303)

The modulation transfer function for speech intelligibility. [PDF]

open access: yesPLoS Computational Biology, 2009
We systematically determined which spectrotemporal modulations in speech are necessary for comprehension by human listeners. Speech comprehension has been shown to be robust to spectral and temporal degradations, but the specific relevance of particular ...
Taffeta M Elliott   +1 more
doaj   +9 more sources

On-Orbit Modulation Transfer Function Estimation Based on the Refined Image Kernel [PDF]

open access: yesSensors, 2023
To overcome the limitations of traditional on-orbit modulation function transfer (MTF) measurement methods that are heavily dependent on natural features, scenery, artificial edges, and point source targets, this paper presents an on-orbit MTF ...
Yuanhang Wang   +5 more
doaj   +2 more sources

Assessment of uncertainty depending on various conditions in modulation transfer function calculation using the edge method [PDF]

open access: yesJournal of Medical Physics, 2021
In medical X-ray imaging, to perform optimal operations, it is essential for the user to understand whether a required image quality level which depends on a diagnostic task can be achieved with the imaging system used.
Sho Maruyama
doaj   +2 more sources

Increasing speech intelligibility and naturalness in noise based on concepts of modulation spectrum and modulation transfer function [PDF]

open access: yesSpeech Communication, 2021
This study focuses on identifying effective features for controlling speech to increase speech intelligibility under adverse conditions. Previous approaches either cancel noise throughout speech presentation or preprocess speech by controlling its ...
Thuanvan Ngo, Masato Akagi
exaly   +2 more sources

Best Practices for Measuring the Modulation Transfer Function of Video Endoscopes [PDF]

open access: yesSensors
Endoscopes are crucial for assisting in surgery and disease diagnosis, including the early detection of cancer. The effective use of endoscopes relies on their optical performance, which can be characterized with a series of metrics such as resolution ...
Quanzeng Wang   +3 more
doaj   +2 more sources

Modulation transfer function for the acoustic microscope

open access: yesElectronics Letters, 1979
A simple method to measure the modulation transfer function of an acoustic microscope is described. Theoretical results are compared with experimental measurements.
Abdullah Atalar
exaly   +2 more sources

Modulation Transfer Function Extraction and Parametric Effects

open access: yesHavacılık ve Uzay Teknolojileri Dergisi
We compute the optical transfer function and corresponding satellite image estimate in order to test validity of our modulation transfer function (MTF) extraction algorithms. The test targets allow MTF computation by using slanted edge and sine wave star
Kamil B. Alıcı
doaj   +1 more source

Modulation Transfer Function Measurement Using Three- and Four-bar Targets

open access: yesApplied Optics, 1995
Modulation-transfer-function (MTF) measurement often involves the use of three- and four-bar resolution targets. In the conversion of three- and four-bar image data to MTF, biased results can occur when we use series-expansion techniques appropriate for ...
Boreman, Glenn D., Yang, Sidney
exaly   +2 more sources

Automatic estimation of modulation transfer functions [PDF]

open access: yes2018 IEEE International Conference on Computational Photography (ICCP), 2018
The modulation transfer function (MTF) is widely used to characterise the performance of optical systems. Measuring it is costly and it is thus rarely available for a given lens specimen. Instead, MTFs based on simulations or, at best, MTFs measured on other specimens of the same lens are used.
Matthias Bauer 0001   +3 more
openaire   +3 more sources

Modulation Transfer Function Analysis in Myopic Model Eye

open access: yesASM Science Journal, 2021
Hitherto, the eye modelling is based on the emmetropic eye taken its ocular optical components value from the population-based studies. However, no studies have been done to study the effect of aberration of myopic refractive error by modelling the eye ...
Shah Farez Othman   +3 more
doaj   +1 more source

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