GSRT to SPH Converter
Convert your gsrt files to sph online & free
Grandstream ring-tone files
SPeech HEader Resources
How to convert GSRT 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