The Overview of Segmental Durations Modification Algorithms on Speech Signal Characteristics

TL;DR

This paper evaluates algorithms for modifying speech signal durations arbitrarily without altering core properties, enabling flexible speech editing for various applications.

Contribution

It provides a comprehensive analysis of mainstream algorithms for arbitrary duration modification of speech signals, highlighting their capabilities and limitations.

Findings

Algorithms can modify speech durations without affecting pitch or spectrum.

Multiple intervals can be modified simultaneously.

The analysis guides future development of speech editing techniques.

Abstract

This paper deeply evaluates and analyzes several mainstream algorithms that can arbitrarily modify the duration of any portion of a given speech signal without changing the essential properties (e.g., pitch contour, power spectrum, etc.) of the original signal. Arbitrary modification in this context means that the duration of any region of the signal can be changed by specifying the starting and ending time for modification or the target duration of the specified interval, which can be either a fixed value of duration in the time domain or a scaling factor of the original duration. In addition, arbitrary modification also indicates any number of intervals can be modified at the same time.