Generation of Natural-Synthetic Spectra by Means of Adaptive Frequency Modulation
размером 1,79 МБ
Добавлен пользователем youssin, дата добавления неизвестна
Project Muse Computer music journal Victor Lazzarini, Joseph Timoney, and Thomas Lysaght "The Generation of Natural-Synthetic Spectra by Means of Adaptive Frequency Modulation"(22 pages) Frequency- modulation (FM) synthesis is widely known as a computationally efﬁcient method for synthesizing musically interesting timbres. How- ever, it has suffered from neglect owing to the difﬁ culty in creating natural- sounding spectra and mapping gestural input to synthesis parameters. Recently, a revival has occurred with the advent of adaptive audio- processing methods, and this work proposes a technique called adaptive FM synthesis. This article derives two novel ways by which an arbitrary input signal can be used to modulate a carrier. We show how phase modulation (PM) can be achieved ﬁ rst by using delay lines and then by heterodyning. By applying these techniques to real- world signals, it is possible to generate transi- tions between natural- sounding and synthesizer- like sounds. Examples are provided of the spectral consequences of adaptive FM synthesis using inputs of various acoustic instruments and a voice. An assessment of the timbral quality of synthesized sounds demonstrates its effectiveness.
Чтобы скачать этот файл зарегистрируйтесь и/или войдите на сайт используя форму сверху.