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This paper proposes and analyses a method that will increase the number of voltage level of any existing topology, only thing is load should be connected across H-bridges. In order to verify the proposed cell, various existing topologies have been simulated and analyzed. The purpose of the circuit proposed is to reduce the use of IGBT switches and hence improving the Total Harmonic Distortion.
The classical front end analysis in speech recognition is a spectral analysis which parameterizes the speech signal into feature vectors. This paper proposes a voice recognition model that is able to automatically classify and recognize a voice signal with background noise. The model uses the concept of spectrogram, pitch period, short time energy, zero crossing rate, mel frequency scale and cepestral...
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