Abstract
A graphical waveform editor for use in speech research applications is described. The editor operates in 32 kwords of main memory on a DEC LSI-11/23 microcomputer under the RSX-11M operating system. The graphics subsystem is a Hewlett-Packard vector graphics controller and display unit. The editor is written in ANSI standard FORTRAN IV to promote portability. WFORM is capable of reading speech files and displaying the contents of these files in either visual or auditory format. In addition, the editor provides the capability to excise arbitrary portions of speech files, concatenate several speech files, and modify the contents of speech files by windowing. Speech analysis is also available in the form of the fast Fourier transform, and a number of windowing techniques are useful for Fourier analysis. The results of the Fourier transform can be displayed either in the form of power spectra or as a rough spectrograph.
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