Current trends in spectral estimation techniques follow basicaly two guidelines; by introducing modifications in the objetive function to be minimized or, keeping the objetive, by modifying the set of constraints in the minimization procedure. This work can be encompassed in the second sense, showing the potential of cepstrum constraints in spectral estimation methods. The special features asso...

Using biometrics to verify a person’s identity has several advantages over the present practices of personal identification numbers (PINs) and passwords. Minutiae-based automated fingerprint identification systems are more popular, but they are more computationally complex and time consuming. In this paper we propose a simple yet effective technique for fingerprint identification. This method i...

Music has been more than just a sound that entertains humans from time immemorial. The pitch determination plays the vital role for many musical processing algorithms. . Repetition is a core principle in musical process. a new approach for automatically characterizing the pitch and tempo of music and audio. Musical information retrieval relates to the identification of perceptually extracts the...

One of the basic problems in speech engineering is phoneme segmentation, that is, to divide a speech stream into a string of phonemes. Automatic Speech Recognition (ASR) models often require reliable phoneme segmentation in the initial training phase, and Text-to-Speech (TTS) systems need a large speech database with correct phoneme segmentation information for improving the performance. Human ...

Active sonar systems are one of the most commonly used acoustic devices for underwater equipment. They use observed signals, which mainly include target echo signals and reverberation, to detect, track, locate targets. Reverberation is primary background interference active systems, especially in shallow sea environments. It coupled with signal both time frequency domain, significantly complica...

Speaker identification in forensic cases involves careful estimation of the features that are more specific to speaker. The anatomical differences in vocal tract depict speaker related differences. Cepstrum has been investigated as a possible parameter for speaker identification. Fundamental frequency obtained from cepstral coefficients indirectly depicts the shape and size of vocal tract. In t...