All fundamental frequency estimators based on spectral analysis rely heavily on a proper harmonic selection of the voice analyzed. Since in practice other spectral peaks pertaining to sources external to the speech considered may be present in the signal, various schemes have been designed to ensure a satisfactory elimination of non pertinent harmonics. This paper introduces a new harmonic sele...

One of the hallmarks molecular dynamics in deeply supercooled liquids is non-exponential character relaxation functions. It has been a long standing issue if 'universal' features govern lineshape glassy independent any particular structure or interaction. In paper, we elucidate this matter by giving comprehensive comparison spectral shape depolarized light scattering and dielectric data liquids...

This paper investigates the randomness and cryptographic properties of the Narayana series modulo p, where p is a prime number. It is shown that the period of the Narayana series modulo p is either p2+p+1 (or a divisor) or p2-1 (or a divisor). It is shown that the sequence has very good autocorrelation and crosscorrelation properties which can be used in cryptographic and key generation applica...

Abstract | In this paper, a multi-carrier spreadspectrum (MC-SS) code division multiple access (CDMA) system with RAKE receiver is investigated in a multi-user environment. The impact of the non-ideal MC-SS code signal autoand crosscorrelation properties on the system performance is examined. Terms for the probability of bit errors are derived considering these correlation behaviors. Furthermor...

Time-delay estimation technique is a key to acoustic temperature field measurement. In order to acquire a stable acoustic time-of-flight in low SNR, a time-delay estimation method combined multilayer cross-correlation and multilayer auto-correlation (MC method for short) is proposed. Crosscorrelation method and second correlation method are described briefly for comparison. Theory analysis and ...

Amplified square shaped picosecond pulses was generated for low emittance electron beam generation in a photocathode RF-GUN. Square shaped pulses were generated by using Ti:sapphire amplifier system in inrfared region and then converted to ultraviolet region via third harmonics generation. Generated squares shaped pulses were measeured by crosscorrelation and spectral interferometric technique ...