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Learn about linear predictive coding (LPC), a method for representing and synthesizing speech signals using a linear model. Find out the history, applications, and coefficient representations of LPC.
Some software audio players support plugins that implement compression. These can increase loudness of audio tracks, or level out the volume of highly-variable music (such as classical music, or a playlist that spans multiple music types). This improves the listenability of audio played through poor-quality speakers, or when played in noisy ...
Learn about the history, types and applications of audio signal processing, a subfield of signal processing that deals with electronic manipulation of sound waves. Find out how audio signals are represented, processed and synthesized in analog and digital domains.
Learn how to change the speed or duration of an audio signal without affecting its pitch, or vice versa. Explore different methods and applications of time stretching and pitch scaling, such as resampling, phase vocoder, sinusoidal analysis/synthesis, and SOLA.
The Phase Vocoder: A Tutorial - A good description of the phase vocoder; New Phase-Vocoder Techniques for Pitch-Shifting, Harmonizing and Other Exotic Effects; A new Approach to Transient Processing in the Phase Vocoder; Phase Vocoder - Phase vocoder description with figures and equations
Pulse-code modulation (PCM) is a method to digitally represent analog signals. It is the standard form of digital audio in computers, compact discs, digital telephony and other applications. Learn about its history, properties, types and applications.
Learn about the process of changing the sampling rate or frequency of a discrete signal to obtain a new discrete representation of the underlying continuous signal. Find out the applications, techniques, and examples of sample-rate conversion in image scaling, audio/visual systems, and more.
MATLAB is a proprietary multi-paradigm programming language and numeric computing environment developed by MathWorks. It allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs written in other languages.