VOC is an audio file category format. File format VOC (or Creative Labs Audio File) was created by Creative Labs. Creative Labs was involved in the development of the audio file format in order to store and transfer audio data for its 8-bit and then 16-bit Sound Blaster sound cards. The format is a sound effect, sound clip and instrumental sound, referred to as a voice. To reduce the size, VOC files are compressed. Since this format has already been thoroughly investigated, its file structures have already been described in detail. A .voc file is a digital audio file in VOC format. In the title, it can be easily identified by the text line “Creative Voice File”. The file includes a header, as well as one or more blocks of audio data. Due to PCM / ADPCM audio encoding, VOC files can be easily converted to WAV format. VOC audio files can be played by several universal multimedia players. Sound editors import them. Using many utility converters, you can convert other audio formats to WAV. In many cases, the .voc file type becomes associated with some kind of multimedia processor that is installed on the system.
MKA is an audio container format. It supports some types of audio compression algorithms. The .mka file extension belongs to the Matroska format (Matröška, Matryoshka). Thus, it serves to specifically designate the file type "Matroska Audio File" (Matroska Audio File). Matroska is an open cross-platform standard. It is a modern extensible multimedia container format. It is error resistant. It is suitable for streaming HTTP / RTP. Supports multiple subtitle tracks, audio, video. The Matroska standard is supported in the native mode by many software players and hardware devices, including, for example, receivers, televisions, smartphones, etc. A .mka file is a regular Matroska container that has one or more audio tracks. They are encoded by any of the supported codecs. In most cases, AAC and AC3 (Dolby Digital) codecs are used. Playing a .mka file needs the support of the standard Matroska container format. But not only. There must also be a specific audio codec with which the tracks are encoded. Often, MKA files are used as external audio tracks for movies in other languages. Or with other content, or with sound quality. Say multi-channel sound, director’s comments. .Mka audio files are used as containers for high-quality multi-channel music.