<?xml version="1.0" encoding="utf-8"?>
<PRONOM-Report xmlns="http://pronom.nationalarchives.gov.uk">
  <report_format_detail>
    <FileFormat>
      <FormatID>786</FormatID>
      <FormatName>Waveform Audio (WAVEFORMATEXTENSIBLE)</FormatName>
      <FormatVersion>
      </FormatVersion>
      <FormatAliases>
      </FormatAliases>
      <FormatFamilies>WAVE</FormatFamilies>
      <FormatTypes>Audio</FormatTypes>
      <FormatDisclosure>
      </FormatDisclosure>
      <FormatDescription>Waveform Audio (WAVEFORMATEXTENSION) is an extended version of the Waveform Audio file format, and was developed by Microsoft. It is related to the Waveform Audio (WAVEFORMATEX) format, but is an even more extended version.</FormatDescription>
      <BinaryFileFormat>Text</BinaryFileFormat>
      <ByteOrders>Little-endian (Intel)</ByteOrders>
      <ReleaseDate>
      </ReleaseDate>
      <WithdrawnDate>
      </WithdrawnDate>
      <ProvenanceSourceID>1</ProvenanceSourceID>
      <ProvenanceName>Digital Preservation Department / The National Archives</ProvenanceName>
      <ProvenanceSourceDate>01 Feb 2007</ProvenanceSourceDate>
      <ProvenanceDescription>
      </ProvenanceDescription>
      <LastUpdatedDate>25 Aug 2022</LastUpdatedDate>
      <FormatNote>
      </FormatNote>
      <FormatRisk>
      </FormatRisk>
      <TechnicalEnvironment>
      </TechnicalEnvironment>
      <FileFormatIdentifier>
        <Identifier>audio/x-wav</Identifier>
        <IdentifierType>MIME</IdentifierType>
      </FileFormatIdentifier>
      <FileFormatIdentifier>
        <Identifier>fmt/143</Identifier>
        <IdentifierType>PUID</IdentifierType>
      </FileFormatIdentifier>
      <ExternalSignature>
        <ExternalSignatureID>789</ExternalSignatureID>
        <Signature>wav</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <ExternalSignature>
        <ExternalSignatureID>790</ExternalSignatureID>
        <Signature>wave</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <InternalSignature>
        <SignatureID>608</SignatureID>
        <SignatureName>Waveform Audio (WAVEFORMATEXTENSIBLE)</SignatureName>
        <SignatureNote>RIFF header, WAVE ID, Format chunk, chunk length GTE 40, wformat Tag = decimal 65534 = 0xFEFF and Data chunk</SignatureNote>
        <ByteSequence>
          <ByteSequenceID>753</ByteSequenceID>
          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
          <MaxOffset>
          </MaxOffset>
          <IndirectOffsetLocation>
          </IndirectOffsetLocation>
          <IndirectOffsetLength>
          </IndirectOffsetLength>
          <Endianness>Big-endian</Endianness>
          <ByteSequenceValue>52494646{4}57415645666D7420{4}FEFF{38-*}64617461</ByteSequenceValue>
        </ByteSequence>
      </InternalSignature>
      <RelatedFormat>
        <RelationshipType>Has lower priority than</RelationshipType>
        <RelatedFormatID>656</RelatedFormatID>
        <RelatedFormatName>Broadcast WAVE</RelatedFormatName>
        <RelatedFormatVersion>1 Generic</RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has lower priority than</RelationshipType>
        <RelatedFormatID>735</RelatedFormatID>
        <RelatedFormatName>Broadcast WAVE</RelatedFormatName>
        <RelatedFormatVersion>0 Generic</RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has lower priority than</RelationshipType>
        <RelatedFormatID>1314</RelatedFormatID>
        <RelatedFormatName>Broadcast WAVE</RelatedFormatName>
        <RelatedFormatVersion>2 Generic</RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has lower priority than</RelationshipType>
        <RelatedFormatID>1508</RelatedFormatID>
        <RelatedFormatName>Broadcast WAVE</RelatedFormatName>
        <RelatedFormatVersion>0 WAVEFORMATEXTENSIBLE Encoding</RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has lower priority than</RelationshipType>
        <RelatedFormatID>1509</RelatedFormatID>
        <RelatedFormatName>Broadcast WAVE</RelatedFormatName>
        <RelatedFormatVersion>1 WAVEFORMATEXTENSIBLE Encoding</RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has lower priority than</RelationshipType>
        <RelatedFormatID>1510</RelatedFormatID>
        <RelatedFormatName>Broadcast WAVE</RelatedFormatName>
        <RelatedFormatVersion>2 WAVEFORMATEXTENSIBLE Encoding</RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has priority over</RelationshipType>
        <RelatedFormatID>654</RelatedFormatID>
        <RelatedFormatName>Waveform Audio</RelatedFormatName>
        <RelatedFormatVersion>
        </RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Has priority over</RelationshipType>
        <RelatedFormatID>785</RelatedFormatID>
        <RelatedFormatName>Waveform Audio (WAVEFORMATEX)</RelatedFormatName>
        <RelatedFormatVersion>
        </RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Is subsequent version of</RelationshipType>
        <RelatedFormatID>785</RelatedFormatID>
        <RelatedFormatName>Waveform Audio (WAVEFORMATEX)</RelatedFormatName>
        <RelatedFormatVersion>
        </RelatedFormatVersion>
      </RelatedFormat>
      <RelatedFormat>
        <RelationshipType>Is subtype of</RelationshipType>
        <RelatedFormatID>654</RelatedFormatID>
        <RelatedFormatName>Waveform Audio</RelatedFormatName>
        <RelatedFormatVersion>
        </RelatedFormatVersion>
      </RelatedFormat>
    </FileFormat>
    <SearchCriteria>Criteria</SearchCriteria>
  </report_format_detail>
</PRONOM-Report>
