Multi-resolution time-frequency (T-F) representation of acoustic signal (speech/music or sound) as an input to CNN is one of them. A convolutional layer of CNN processes an image of speech or sound (spectrogram or any other T-F representation). Besides conventional spectrogram, many more ...
(PSK), Analysis method is based on the spectrogram time frequency analysis and a rule based approach is used as a classifier.From the time-frequency representation,the instantaneous frequency is estimated which is then used to estimate the modulation type its parameters.This information is further ...
% Frequency component for 0 bit f1 = 3; % Frequency component for 1 bit f2 = 5; % Sampling rate - This will define the resoultion fs = 100; % Time for one bit t = 0: 1/fs : 1; % This time variable is just for plot time = []; FSK_signal = []; Digital_signal =...
关键词: time-frequency distribution rearrangement Wigner-Ville distribution spectrogram cross-term 会议名称: International forum on computer science-technology and applications;IFCSTA 2009 会议地点: Chongqing(CN);Chongqing(CN) 主办单位: School of Physics Science and Information Engineering Liaocheng University...
Spectrogram, synchrosqueezing, reassignment, Wigner-Ville, time-frequency marginals, data-adaptive methods Signal Processing Toolbox™ provides functions and apps that enable you to visualize and compare time-frequency content of nonstationary signals. Compute the short-time Fourier transform and its inve...
We have applied a time-frequency search to the data from the Mock LISA Data Challenge (MLDC) with promising results. Our analysis used the Hierarchical Algorithm for Clusters and Ridges to identify tracks in the time-frequency spectrogram corresponding to EMRI sources. We then estimated the EMRI...
Time-frequency spectrograms were masked with non-significant differences set to 0 dB. Non-parametric bootstrapping technique with random shuffling was used for the comparison, significant level: 0.05. Full size image We observed amplitude modulations relative to the mean gait cycle in the α/...
This paper describes several approaches to analyzing the frequency, or pitch, content of the sounds produced by musical instruments. The classic method, using Fourier analysis, identifies fundamentals and overtones of individual notes. A second method, using spectrograms, analyzes the changes in fundame...
24, whose study involved time–frequency spectrogram analysis. PAC patients have an abnormal P-wave shape, which denotes the electrical depolarization of the atrium. Sometimes, this odd P-wave shape is partially or wholly buried in the T-wave due to the electrical repolarization of the ventricles...
Parameters of the spectrogram include the window length , window type (Hamming, Kaiser, etc.), hop-size , and FFT length . As discussed in Chapter 5, the window length controls frequency resolution, the window type controls side-lobe suppression (at the expense of resolution when ...