OggPCM
Encyclopedia
OggPCM is a data format
which is used to encapsulate PCM
audio data
inside the Ogg
container format. It is developed by Xiph.Org Foundation
. Like WAV
, and unlike MP3
or Vorbis
, it deals with uncompressed digital sound, making the format lossless
. Like Vorbis, it could be used in separation from the Ogg framework. In practice OggPCM is only found inside the Ogg container.
An OggPCM bitstream may be concurrently multiplexed with other Ogg logical bitstreams.
Data format
Data format in information technology can refer to either one of:* Data type, constraint placed upon the interpretation of data in a type system* Signal , a format for signal data used in signal processing...
which is used to encapsulate PCM
Pulse-code modulation
Pulse-code modulation is a method used to digitally represent sampled analog signals. It is the standard form for digital audio in computers and various Blu-ray, Compact Disc and DVD formats, as well as other uses such as digital telephone systems...
audio data
Audio format
An audio format is a medium for storing sound and music. The term is applied to both the physical recording media and the recording formats of the audio content – in computer science it is often limited to the audio file format, but its wider use usually refers to the physical method used to...
inside the Ogg
Ogg
Ogg is a free, open container format maintained by the Xiph.Org Foundation. The creators of the Ogg format state that it is unrestricted by software patents and is designed to provide for efficient streaming and manipulation of high quality digital multimedia.The Ogg container format can multiplex...
container format. It is developed by Xiph.Org Foundation
Xiph.Org Foundation
Xiph.Org Foundation is a non-profit organizationthat produces free multimedia formats and software tools. It focuses on the Ogg family of formats, the most successful of which has been Vorbis, an open and freely licensed audio format and codec designed to compete with the patented MP3 and AAC...
. Like WAV
WAV
Waveform Audio File Format , is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs...
, and unlike MP3
MP3
MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is a patented digital audio encoding format using a form of lossy data compression...
or Vorbis
Vorbis
Vorbis is a free software / open source project headed by the Xiph.Org Foundation . The project produces an audio format specification and software implementation for lossy audio compression...
, it deals with uncompressed digital sound, making the format lossless
Lossless data compression
Lossless data compression is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. The term lossless is in contrast to lossy data compression, which only allows an approximation of the original data to be reconstructed, in exchange...
. Like Vorbis, it could be used in separation from the Ogg framework. In practice OggPCM is only found inside the Ogg container.
An OggPCM bitstream may be concurrently multiplexed with other Ogg logical bitstreams.