This format extension is one of the Speex Audio formats. It is an open-source codec developed by Xiph.Org. Used for creating voice messages and transmitting voice over packet-based networks with a low level of security. It is an audio file with recorded voice messages that are packaged in an OGG file. Only certain media players can open it.

dts

Digital Theater System

Developed and introduced in 2005, the Digital Theater System format is used in HD films. DTS has a multi-channel sound with various functions. All audio information is divided into five tracks. A separate audio player is not required. The Digital Theater System format allows you to achieve the five-channel sound that is used in cinemas. The rate of the digital stream amounts to 1,536,000 bits per second. DTS is compatible with the 7.1 acoustics format and the conventional stereo format.