A new method and application is proposed to characterize intensity and pitch of human heart sounds and murmurs. Using recorded heart sounds from the library of one of the authors, a visual map of heart sound energy was established. Both normal and abnormal heart sound recordings were studied. Representation is based on Wigner-Ville joint time-frequency transformations. The proposed methodology ...

Seismic methods used in the study of snow avalanches may be employed to detect and characterize landslides and other mass movements, using standard spectrogram/sonogram analysis. For snow avalanches, the spectrogram for a station that is approached by a sliding mass exhibits a triangular time/frequency signature due to an increase over time in the higher-frequency constituents. Recognition of t...

The SPectrogram Analysis and Cataloguing Environment (SPACE) tool is an interactive python designed to label radio emission features of interest in a time-frequency map (called “dynamic spectrum”). program uses Matplotlib’s Polygon Selector widget allow user select edit undefined number vertices on top the dynamic spectrum before closing shape (polygon). Multiple polygons may be drawn any spect...

In this time of technology, digital speech can be created and falsified by a very diverse hardware software technologies. Audio copy-move forgery is an audio technique that goals to create forged hiding undesirable words or repeating wanted in identical speech. Therefore, authentication has been necessary requisition. study, effective approach spectral images based on detection using convolutio...

North Atlantic, North Pacific, and southern right whales all produce the up call, a frequency-modulated upsweep in the 50-200 Hz range. This call is one of the most common sounds, and frequently the most common sound, received from right whales, and as such is a useful indicator of the presence of right whales for acoustic surveys. A data set was prepared of 1857 calls and 6359 non-call sounds ...

This paper concerns the mean square error optimal weighting factors for multiple window spectrogram of different stationary and nonstationary processes. It is well known that the choice of multiple windows is important, but here we show that the weighting of the different multiple window spectrograms in the final average is as important to consider and that the equally averaged spectrogram is n...