This format was developed by Creative Labs for storing and transmitting audio information of 8 and 16-bit sound cards. VOC can be represented as a sound effect, a music sound or a sound clip. It consists of a header and a pair of blocks containing the sound data. This format is supported by several audio players. VOC files can be converted into the WAV format using various utilities.

amr

AMR (Adaptive Multi Rate): adaptive encoding with variable bitrate

This information compression format allows for optimizing speech encoding. Files in the Adaptive Multi Rate format can be created using phones and smartphones. AMR files are mostly used for voice recordings. The main advantages of the format are the large number of encoding and decoding rates, as well as the small size of the resulting content. With the help of appropriate software, an Adaptive Multi Rate file can be converted into any other audio format.