This is a free audio codec that enables compression without any losses. The True Audio format was developed by Russian specialists back in 2009. The main advantage of TTA is the highly efficient compression: up to 30% of the total volume. The original quality of the file is fully preserved. The encoding algorithm is implemented in real-time mode. The True Audio data format is simple and open; it is also suitable for lossless compression of multichannel files.

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.