Online SPH to M4R, you can put the SPH to M4R format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload SPH file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'M4R'
Select output M4R or any other format as the conversion result (click the Convert button)
Step 3
Download your SPH file
After the conversion you can download your M4R file and upload it to Google Drive, Dropbox.
sph : SPeech HEader Resources
SPHERE (SPeech HEader Resources) is a file format defined by NIST (National Institute of Standards and Technology) and is used with speech audio. SoX can read these files when they contain μ-law and PCM data. It will ignore any header information that says the data is compressed using shorten compression and will treat the data as either μ-law or PCM. This will allow SoX and the command line shorten program to be run together using pipes to encompasses the data and then pass the result to SoX for processing.
M4R - is a digital multimedia container format used to store audio in mono channel mode. This format is suitable for store ringtones and it is widely used by Apple iPhone for its ringtones. Needless to say that M4R and M4A formats shares many similar features.