W64 to SPH Converter
Convert your w64 files to sph online & free
Sonic Foundry’s 64-bit RIFF/WAV format
SPeech HEader Resources
How to convert W64 to SPH
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to sph"
Choose sph or any other format you need as a result (more than 200 formats supported)
Download your sph
Let the file convert and you can download your sph file right afterwards