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The goal of this work was to explore the optimization of the feature extraction module (front-end) parameters to improve bird species recognition. We explored optimizing the spectral and temporal parameters of a Mel cepstrum feature-based front-end, starting from common parameter values used in speech processing experiments. These features were modeled using a Gaussian mixture model (GMM) system....
Cochlear implants (CI) are electrical prosthesis that partially replaces the function of the human ear. As cochlear implants are system specific there is a need for simulation of the system parameters prior to implantation. In the current work we have considered the system specific parameters like number of channels, type of filters by developing uniform bandwidth filter based acoustic CI model and...
Modulation filtering is a technique for filtering slowly-varying envelopes of frequency subbands of a nonstationary signal, ideally without affecting the signal's phase and fine-structure. Coherent modulation filtering is a promising subtype of such techniques where subband envelopes are determined through demodulation of the subband signal with a coherently detected subband carrier. In this paper...
A new super-resolution algorithm for time delay estimation (TDE) of multipath propagation signals base on least square criterion was proposed. The idea was to decompose the observed data into their signal components and then to estimate the amplitude and time delay of each signal components separately, using cubic slpline interpolation and basing on least square criterion. The algorithm iterated back...
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