Format
Waveform Audio (WAVEFORMATEX)
Summary
- Name
- Waveform Audio (WAVEFORMATEX)
- Identifiers
-
- MIME: audio/x-wav
- PUID: fmt/142
- Format type
- Audio
- Family
- WAVE
- Description
- Waveform Audio (WAVEFORMATEX) is an extended version of the Waveform Audio file format, and was developed by Microsoft. It has superseded the Waveform Audio (PCMWAVEFORMAT).
- Format encoding
- Text
- File extensions
-
wav,wave - Submitted by
- Digital Preservation Department / The National Archives
- Developed by
- Microsoft Corporation
- Supported by
- Microsoft Corporation
Relationships
- Has lower priority than
- Has priority over
- Is previous version of
- Is subsequent version of
- Is subtype of
Internal signatures
Waveform Audio (WAVEFORMATEX)
- Description
- RIFF header, WAVE ID, Format chunk, chunk length GTE 18, wformat Tag not equal to decimal 65534 = 0xFFFE and Data chunk. Since DROID cannot currently handle inverted (i.e. not equal to) sequences, the wformat chunk is not expressed in this signature. For fmt/143 the wformat tag = 65534 = 0xFFFE, so this is handled by setting an appropriate identification priority.
- Provenance
- WAVEFORMATEX structure http://msdn.microsoft.com/en-us/library/dd390970(v=vs.85).aspx MultimediaWiki. WAVEFORMATEX http://wiki.multimedia.cx/index.php?title=WAVEFORMATEX
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
52494646{4}57415645666D7420[!10]{21-*}64617461- Endianness
- Big-endian
Changelog
-
V109
- Release date
- 1 November 2022
-
Updated
Waveform Audio (WAVEFORMATEX): Adjusted signature caused by copying error from previous release. Submitted by Preservica.
-
V108
- Release date
- 5 September 2022
-
Updated
Waveform Audio (WAVEFORMATEX): Signature update - removal of wformat chunk due to DROID not currently being able to handle inverted sequences. For further details see issues #805 and #806 in the DROID GitHub page (https://github.com/digital-preservation/droid/issues). Submitted by Preservica.
-
V88
- Release date
- 27 September 2016
-
Updated
Waveform Audio (WAVEFORMATEX): Adjusted signature due to findings from Archives New Zealand.
-
V65
- Release date
- 25 October 2012
-
Updated
Waveform Audio (WAVEFORMATEX): Modified signature to remove multiple identification conflict with fmt/141 Waveform Audio (PCMWAVEFORMAT) identified through Ross Spencer's Skeleton Corpus.
-
V62
- Release date
- 28 August 2012
-
Updated
Waveform Audio (WAVEFORMATEX): Existing signature refined through PRONOM Research.
-
V59
- Release date
- 21 March 2012
-
Updated
Waveform Audio (WAVEFORMATEX): Priority set to avoid multiple identification with Waveform Audio Format.
-
V58
- Release date
- 21 March 2012
-
Added signature
Waveform Audio (WAVEFORMATEX): Signature submitted by Georgia Tech Research Institute, USA.