A Audio File and Compression Formats

The following sections describe the audio file and compression formats and other audio features supported by Oracle interMedia ("interMedia").

Find the data format you are interested in, and then determine the supported formats. For example, Section A.1 shows that interMedia supports AIFF format for single channel, stereo, 8-bit and 16-bit samples, linear PCM encoding, and uncompressed format.

A.1 Supported AIFF Data Formats

The supported AIFF format ID, file format, file extension, MIME type, audio features, compression format, and encoding/compression type are the following:

Format ID: AIFF
File Format: AIFF
File extension: .aff
MIME type: audio/x-aiff
Audio features:
- Single channel
- Stereo
- 8-bit samples
- 16-bit samples
- Linear PCM encoding

Compression format: Standard AIFF Uncompressed
Encoding/Compression Type: TWOS

A.2 Supported AIFF-C Data Formats

The supported AIFF-C format ID, file format, file extension, MIME type, and audio features are the following:

Format ID: AIFC
File format: AIFC
File extension: .aft
MIME type: audio/x-aiff
Audio features:
- Single channel
- Stereo
- 8-bit samples
- 16-bit samples

Table A-1 lists the supported AIFF-C data compression format names and encoding/compression types.

Table A-1 Supported AIFF-C Data Compression Formats and Types

Compression Formats	Encoding/Compression Types
Not compressed	Uncompressed (TWOS)
ACE 2-to-1	ACE2
ACE 8-to-3	ACE8
MACE 3-to-1	MAC3
MACE 6-to-1	MAC6

A.3 Supported AU Data Formats

The supported AU format ID, file format, file extension, MIME type, and audio features are the following:

Format ID: AUFF
File format: AUFF
File extension: .au
MIME type: audio/basic
Audio features:
- Single channel
- Stereo
- 8-bit samples
- 16-bit samples
- mu-law encoding
- Linear PCM encoding

Table A-2 lists the supported AU data compression format names and encoding/compression types.

Table A-2 AU Data Compression Formats and Types

Compression Format	Encoding/Compression Types
Unspecified format	UNSPECIFIED
8-bit mu-law samples	MULAW
8-bit linear samples	LINEAR
16-bit linear samples	LINEAR
24-bit linear samples	LINEAR
32-bit linear samples	LINEAR
Floating-point samples	FLOAT
Double-precision float samples	DOUBLE
Fragmented sample data	FRAGMENTED
Nested format	NESTED
DSP program	DSP_CORE
8-bit fixed-point samples	DSP_DATA
16-bit fixed-point samples	DSP_DATA
24-bit fixed-point samples	DSP_DATA
32-bit fixed-point samples	DSP_DATA
Unknown AU format	UNKNOWN
Nonaudio display data	DISPLAY
Squelch format	MULAW_SQUELCH
16-bit linear with emphasis	EMPHASIZED
16-bit linear with compression	COMPRESSED
16-bit linear with emphasis and compression	COMPRESSED_EMPHASIZED
Music Kit DSP commands	DSP_COMMANDS
DSP commands samples	DSP_COMMANDS_SAMPLES
ADPCM G721	ADPCM_G721
ADPCM G722	ADPCM_G722
ADPCM G723_3	ADPCM_G723_3
ADPCM G723_5	ADPCM_G723_5
8-bit a-law samples	ALAW

A.4 Supported 3GP Data Format

The supported 3GP format ID, file format, file extension, and MIME type are the following:

Format ID: 3GP
File Format: 3GP
File extension: .3gp
MIME type: audio/3gpp

A.5 Supported Audio MPEG Data Formats

The supported audio MPEG formats are MPEG1, MPEG2, and MPEG4, as described in the following sections.

A.5.1 Supported MPEG1 and MPEG2 Data Formats

The MPEG1 and MPEG2 format ID, file format, file extension, MIME type, and audio features are the following:

Format ID: MPEG
File format: MPGA
File extension: .mpg
MIME type: audio/mpeg
Audio Features:
- Layer I
- Layer II
- Layer III

Table A-3 lists the supported audio MPEG1 and MPEG2 data compression format names and encoding/compression types.

Table A-3 Audio MPEG1 and MPEG2 Compression Formats and Types

Compression Formats	Encoding/Compression Types
MPEG Audio, Layer I	LAYER1
MPEG Audio, Layer II	LAYER2
MPEG Audio, Layer III	LAYER3

A.5.2 Supported MPEG4 Data Formats

The MPEG4 format ID, file format, file extension, and MIME type features are the following:

Format ID: MP4
File format: MP4
File extension: .mp4
MIME type: audio/mp4

A.6 Supported RealNetworks Real Audio Data Format

The supported RealNetworks Real Audio format ID, file format, file extensions, MIME type, and audio features are the following:

Format ID: RMFF
File format: RMFF
File extensions: .ra, .rm, and .ram
MIME type: audio/x-pn-realaudio
Audio features: one or more streams with different bit rates

A.7 Supported WAV Data Formats

The supported WAV format ID, file format, file extension, MIME type, and audio features are the following:

Format ID: WAVE
File format: WAVE
File extension: .wav
MIME type: audio/x-wav
Audio features:
- Single channel
- Stereo
- 8-bit samples
- 16-bit samples
- Linear PCM encoding

Table A-4 lists the supported WAV data compression format names and encoding/compression types.

Table A-4 WAV Data Compression Formats and Types

Compression Formats	Encoding/Compression Types
Unknown Wave Format	UNKNOWN
Microsoft PCM Wave Format	MS_PCM
Microsoft ADPCM Wave Format	MS_ADPCM
IBM CVSD Wave Format	IBM_CVSD
Microsoft aLaw Wave Format	ALAW
Microsoft mu-Law Wave Format	MULAW
OKI ADPCM Wave Format	OKI_ADPCM
Intel DVI/IMA ADPCM Wave Format	DVI_ADPCM
VideoLogic Media Space ADPCM Wave Format	MEDIASPACE_ADPCM
Sierra Semiconductor ADPCM Wave Format	SIERRA_ADPCM
Antex Electronics G723 ADPCM Wave Format	ANTEX_G723_ADPCM
DSP Solutions DIGISTD Wave Format	DIGISTD
DSP Solutions DIGIFIX Wave Format	DIGIFIX
Dialogic OKI ADPCM Wave Format	DIALOGIC_OKI_ADPCM
Yamaha ADPCM Wave Format	YAMAHA_ADPCM
Speech Compression Sonarc Wave Format	SONARC
DSP Group TrueSpeech Wave Format	DSPGROUP_TRUESPEECH
Echo Speech Wave Format	ECHOSC1
Audiofile AF36 Wave Format	AUDIOFILE_AF36
Audio Processing Technology Wave Format	APTX
Audiofile AF10 Wave Format	AUDIOFILE_AF10
Dolby AC-2 Wave Format	DOLBY_AC2
Microsoft GSM 610 Wave Format	MS_GSM610
Antex Electronics ADPCME Wave Format	ANTEX_ADPCME
Control Resources VQLPC Wave Format	CONTROL_RES_VQLPC
DSP Solutions DIGIREAL Wave Format	DIGIREAL
DSP Solutions DIGIADPCM Wave Format	DIGIADPCM
Control Resources CR10 Wave Format	CONTROL_RES_CR10
Natural Microsystems NMS VBXADPCM Wave Format	NMS_VBXADPCM
Crystal Semiconductor IMA ADPCM Wave Format	CS_IMAADPCM
Antex Electronics G721 ADPCM Wave Format	ANTEX_G721_ADPCM
MPEG-1 Audio Wave Format	MPEG
Creative Labs ADPCM Wave Format	CREATIVE_ADPCM
Creative Labs FastSpeech8 Wave Format	CREATIVE_FASTSPEECH8
Creative Labs FastSpeech10 Wave Format	CREATIVE_FASTSPEECH10
Fujitsu FM Towns Wave Format	FM_TOWNS_SND
Olivetti GSM Wave Format	OLIGSM
Olivetti ADPCM Wave Format	OLIADPCM
Olivetti CELP Wave Format	OLICELP
Olivetti SBC Wave Format	OLISBC
Olivetti OPR Wave Format	OLIOPR