In this paper, a new method for time–frequency analysis of speech signals is proposed.
Given that the fundamental frequency of voiced speech often undergoes rapid fluctuation …

(*) Notice: Subject to any disclaimer, the term of this WO WO 2013, 022930 2, 2013 patent is
extended or adjusted under 35 OTHER PUBLICATIONS USC 154 (b) by 89 days. Luis …

Most speech enhancement algorithms make use of the short-time Fourier transform (STFT),
which is a simple and flexible time-frequency decomposition that estimates the short-time …

(57) ABSTRACT A system and method may be configured to process an audio signal. The
system and method may track pitch, chirp rate, and/or harmonic envelope across the audio …

A system and method may be configured to analyze audio information derived from an audio
signal. The system and method may track sound pitch across the audio signal. The tracking …

This paper introduces a new spectral representation-based pitch estimation method. Since
pitch is never stationary during real conversations, but often undergoes changes because of …

BACKGROUND Systems and techniques for tracking Sound pitch across an audio signal
are known. Known techniques implement a transform to transform the audio signal into the …

Abstract Fractional Fourier transform (FrFT) has been proposed to improve the time-
frequency resolution in signal analysis and processing. However, selecting the FrFT …

An estimate of a fractional chirp rate of a signal may be computed by using multiple
frequency representations of the signal. A first frequency representation may be computed …

Features that may be computed from a harmonic signal include a fractional chirp rate, a
pitch, and amplitudes of the harmonics. A fractional chirp rate may be estimated, for …