spwave is a speech file editor supporting several sound formats. The program is designed for research use, so stability and usability are regarded as important. spwave runs on UNIX (or UNIX clone), Windows95/98 and MacOS, since spwave uses spComponent library which is a GUI toolkit working on multiple platforms.

Features:

• Support for multiple platforms: Windows, MacOS and UNIX (Motif, GTK)
• Support for WAV, AIFF, MP3, raw, and text files by using plug-ins
• Support for many bits/samples: 8bits, 16bits, 24bits, 32bits, 32bits float, 64bits double
• Converting the sampling frequency and the bits/sample of a file
• Playing, zooming, cropping, deleting, extracting, etc. of a selected region
• Fade-in, fade-out, gain adjustment, channel swapping, etc of a selected region
• Editing file information that supports comments of WAV and AIFF, and ID3 tag of MP3
• Analysis of a selected region using several analysis types, e.g. spectrum, smoothed spectrum, phase, unwrapped phase and group delay
• Undoing and redoing without limitation of the number of times
• Waveform extraction by drag & drop
• Opening files by drag & drop
• Autosaving of selected regions (you can do this by drag & drop also)
• Saving positions and regions as labels
• Viewing some waveforms and setting regions synchronously
• Almost all processing is 64 bits processing internally