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1 edition of Feature based neural network acoustic transient signal classification found in the catalog.

Feature based neural network acoustic transient signal classification

Terry S. Wichert

Feature based neural network acoustic transient signal classification

by Terry S. Wichert

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  • 18 Currently reading

Published by Naval Postgraduate School, Available from the National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English


Edition Notes

ContributionsCollins, Daniel Joseph
The Physical Object
Pagination104 p. ;
Number of Pages104
ID Numbers
Open LibraryOL25517970M

A Neural Network for Real-Time Signal Processing • It performs well in the presence of either Gaussian or non-Gaussian noise, even where the noise characteristics are changing. • Improved classifications result from temporal pattern matching in real-time, and by taking advantage of input data context by: 9. In recent years, neural network approaches have shown superior performance to conventional hand-made features in numerous application areas. In particular, convolutional neural networks (ConvNets) exploit spatially local correlations across input data to improve the performance of audio processing tasks, such as speech recognition, musical chord recognition, and onset .

Mun et al. proposed a classification framework based on bottle-neck feature extraction with Deep Neural Networks (DNN) [10]. Takahashi et al. investigated DNN-Gaussian Mixture Model (GMM) framework for classifying MFCCs [11]. Similarly, Con-volutional Neural Network (CNN) was applied for classifying log-mel spectrograms [12]. Index Terms: acoustic modeling, raw signal, neural networks 1. Introduction Since DNN based acoustic models have become a popular alter-native to the Gaussian mixture models (GMMs), a lot of effort was put into feature engineering that aimed at finding a repre-sentation of input audio data that is most suitable for training of neural networks.

  Infrasound Classification using Long Short-Term Memory Recurrent Neural Networks This feature is not available right now. Please try again later. The Recurrent Neural Network Model. In order to train a neural network to predict the class of animal species using this data set, there are procedure that has to be made. Prodecure of training a neural network. In order to train a neural network, there are six steps to be made: 1. Normalize the data. 2. Create a Neuroph project. 3. Create a training set. 4. Create a neural.


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Feature based neural network acoustic transient signal classification by Terry S. Wichert Download PDF EPUB FB2

Pre-processing and classification of acoustic transient signals using a FIR neural network Normand J Arsenault Not available for use outside of the University of New Brunswick. model, the model combines a Deep Neural Network (DNN) with Time Convolution (TC), followed by a Bidirectional Long-Short Term Memory (BLSTM), and a final DNN.

The first DNN acts as a feature processor to our model, the BLSTM then gen-erates a context from the sequence acoustic signal, and the finalFile Size: KB.

Using deep neural network. Since acoustic signals are onedimensional and - conceptually simpler than the more complex two-dimensional signals, like images, people also believe it would be possible to apply deep neural networks on acoustic signals and let the network extract features for by: An unsupervised method, based on the Principal Component Analysis (PCA) and the Mixture of Gaussian (MoG) clustering algorithm, gives a 70% percentage of correct classification.

The Elman Recurrent Neural Nets (RNN) is able to reach 91% of correct classification on the test by: 2. The MFCC feature vector is extracted frame-by-frame basis for an input signal that is detected as a transient signal, and Euclidean distances are calculated between this and all MFCC feature.

Artificial Neural Network (ANN) trained by a standard back propagation algorithm and Support Vector Machines (SVMs) were used for classifying different combinations mental tasks.

Experimental results show the classification accuracies achieved with the three used feature extraction techniques and the two classification by: 6. The subject of neural networks and their application to signal processing is constantly improving. You need a handy reference that will inform you of current applications in this new area.

The Handbook of Neural Network Signal Processing provides this much needed service for all engineers and scientists in the : Hardcover. Acoustic scene classification using convolutional neural network and multiple-width frequency-delta data augmentation based on a classifier.

Although the details of the feature extraction processes differ, manual extraction of audio features was the most popular method. For this purpose I am extracting MFCC features of the audio signal and feed them into a simple neural network (FeedForwardNetwork trained with BackpropTrainer from PyBrain).

Unfortunately the results are very bad. From the 5 classes the network seems to almost always come up with the same class as a result. Transient Signal Detection with Neural Networks: The Search for the Desired Signal results presented next use the same trainingltest sets, the same learning and stop criterion and the same network topology.

3 RESULTS Desired Signal I. We begin with the most commonly used desired signal for static classification, theFile Size: 1MB. Gearboxes are widely applied in power transmission lines, so their health monitoring has a great impact in industrial applications.

In the present study, acoustic signals of Pride gearbox in different conditions, namely, healthy, worn first gear and broken second gear are collected by a microphone. Discrete wavelet transform (DWT) is applied to process the by: 8.

You can find a deep learning approach to this classification problem in this example Classify Time Series Using Wavelet Analysis and Deep Learning and a machine learning approach in this example Signal Classification Using Wavelet-Based Features and Support Vector ringTransform: Wavelet 1-D scattering transform.

The deep convolutional neural network (CNN) architecture proposed in this study is comprised of 3 convolutional layers interleaved with 2 pooling operations, followed by 2 fully con-nected (dense) layers.

Similar to previously proposed feature learning approaches applied to environmental sound classifi-cation (e.g., [7]), the input to the File Size: KB. structure of a convolutional neural network is shown in Fig It consists of two-dimensional layers of neurons, through which the input image is recognized.

A convolutional neural network performs two main functions - image recognition or highlighting of its characteristic features, and classification based on the training sample. In this paper neural networks are applied to the detection and classification of synchronous recurrent transient signal in noise, and evaluated under the same conditions as the optimum detector/classifier.

Different neural network configurations are compared with each other, and with the adaptive sequential detector which is used as a by:   Signal classifications using neural networks.

Learn more about neural network, class. Can a neural network be designed that can classify these three type of signals in three different class.

i am having a similar issue. i want to use neural networks for ECG signal classification and i am stuck. A hierarchical Maximum Likelihood Adaptive Neural System (MLANS) is proposed for transient signal processing. This is a new type of neural network that incorporates a model-based concept, leading to greatly increased learning efficiency compared to Cited by: Acoustic Traffic Classification using an Artificial Neural Network arti cial neural network, ARMA signal model, principal component analysis v.

Akustisk klassi cering av tra k med ett arti ciellt neuralt n atverk on the human process of classi cation based on the function of the neural network. Aim of the Thesis. Classify the features as to frequency range.

Make an average of the FFT-points for those ranges - this will give you the intensity of that feature. Plot the intensity of the features against time.

Locate groupings of feature intensities that are unique for each type of heart defect - these are the things you need to be able to recognize. A probabilistic neural network (PNN) is a four-layer feedforward neural network.

The layers are Input, hidden, pattern/summation and output. In the PNN algorithm, the parent probability distribution function (PDF) of each class is approximated by a Parzen window and a non-parametric function.

Then, using PDF of each class, the class probability of a new input is. The feature extraction phase is based on either of the two methods (I & II), as depicted in Fig.

2. The classification phase following the feature extraction makes use of MLP networks. Integration of individ-ual outcomes of the neural networks is performed to fully utilize the history of classification results.

3 Feature Extraction.Power signal disturbance classification using wavelet based neural network 73 Both the scaling factor 0 am and the shifting factor 00 nb am are functions of the integer parameter m, where m and n are scaling and sampling numbers respectively and m 0,1,2,= By selecting a0 = 2 and b0 =1, a representation of any signal xk at various resolution levels can be developed by using .Feature Extraction and Classification of EEG Signal Using Neural Network Based Techniques Nandish.M, Stafford Michahial, Hemanth Kumar P, Faizan Ahmed Abstract: Feature extraction of EEG signals is core issues on EEG based brain mapping analysis.

The classification of EEG signals has been performed using features extracted from EEG signals.