Online AMR to SPX, you can put the AMR to SPX format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload AMR file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'SPX'
Select output SPX or any other format as the conversion result (click the Convert button)
Step 3
Download your AMR file
After the conversion you can download your SPX file and upload it to Google Drive, Dropbox.
amr : Adaptive Multi-Rate Codec File
AMR files are compressed audio files which are often used by cell phones. This files can contain voice recordings or voicebox messages for example. The format was developed by Ericsson.
An SPX file is a Speex audio file saved within an Ogg Vorbis container. Speex is an open source patent-free audio format designed for speech compression. It supports variable bitrate (VBR) encoding and several features not found in other audio codecs. Some examples include embedded encoding, intensity stereo encoding, and voice activity detection.