منابع مشابه
Wolf population counting by spectrogram image processing
We investigate the use of image processing techniques based on partial differential equations applied to the image produced by time-frequency representations of onedimensional signals, such as the spectrogram. Specifically, we use the PDE model introduced by Álvarez, Lions and Morel for noise smoothing and edge enhancement, which we show to be stable under signal and window perturbations in the...
متن کاملNeural correlates of motion processing through echolocation, source hearing, and vision in blind echolocation experts and sighted echolocation novices.
We have shown in previous research (Thaler L, Arnott SR, Goodale MA. PLoS One 6: e20162, 2011) that motion processing through echolocation activates temporal-occipital cortex in blind echolocation experts. Here we investigated how neural substrates of echo-motion are related to neural substrates of auditory source-motion and visual-motion. Three blind echolocation experts and twelve sighted ech...
متن کاملAutomatic Time-Frequency Analysis of Echolocation Signals Using the Matched Gaussian Multitaper Spectrogram
High-resolution time-frequency (TF) images of multicomponent signals are of great interest for visualization, feature extraction and estimation. The matched Gaussian multitaper spectrogram has been proposed to optimally resolve multicomponent transient functions of Gaussian shape. Hermite functions are used as multitapers and the weights of the different spectrogram functions are optimized. For...
متن کاملSound Event Recognition in Unstructured Environments using Spectrogram Image Processing
The objective of this research is to develop feature extraction and classification techniques for the task of sound event recognition (SER) in unstructured environments. Although this field is traditionally overshadowed by the popular field of automatic speech recognition (ASR), an SER system that can achieve human-like sound recognition performance opens up a range of novel application areas. ...
متن کاملWolves chorus noise reduction by spectrogram image processing
We investigate the use of image processing techniques based on partial differential equations applied to the image produced by timefrequency representations of one-dimensional signals, such as the spectrogram. Specifically, we use the PDE model introduced by Álvarez, Lions and Morel for noise smoothing and edge enhancement, which we show to be stable under signal and window perturbations in the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1983
ISSN: 0001-4966
DOI: 10.1121/1.2020917