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Sound analysis and synthesis using an Amiga microcomputer [abstract]

Richard, J. P. (1989). Sound analysis and synthesis using an Amiga microcomputer [abstract] . Bioacoustics, Volume 2 (2): 170



Sounds are captured using a sampling interface operating on 8 bits at a frequency from 3 to 48 kiloHertz. During sampling, the signal - as an amplitude envelope - scrolls across the screen in real time so that you can choose exactly the part you want. A signal processor would be needed to obtain a scrolling sonogram. The programme is written in Assembler language and operates with the user interface of the Amiga (commands by icons and menus). Thus it is rapid and very easy to use. The sonograms are obtained using a Fast Fourier Transform in which the number of significant points and the unit of scrolling can be changed. The width to length relationship is similar to that of the Kay analyser. Sections across the sonogram can be made, measured and stored, as can be whole sonograms, with a view to statistical analysis.