This is an audio file extension that allows for achieving surround sound. It is utilized in files of the DVD format. Its manufacturing company is Dolby Digital. An AC3 file is an audio stream that can be encountered as external soundtracks for films. You can download it separately and synchronize it with the movie file. The audio file contains 6 channels: upper and lower, front and rear, right and left, as well as low-frequency effects.

tta

True Audio (TTA): a free audio codec for audio compression

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.