Difference between revisions of "Significant characteristics of audio files"

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[[Main Page]] > [[Documentation]] > [[Format-specific preservation plans]] > [[Significant properties]] > Significant properties of audio files
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[[Main Page]] > [[Documentation]] > [[Format policies]] > [[Significant characteristics]] > Significant characteristics of audio files
  
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From [http://www.fcla.edu/digitalArchive/formatInfo.htm Florida Digital Archive WAVE preservation Action Plan]:  
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<div style="padding: 10px 10px; border: 1px solid black; background-color: #F79086;">This page is no longer being maintained and may contain inaccurate information. Please see the [https://www.archivematica.org/docs/latest/ Archivematica documentation] for up-to-date information.</div><p>
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*WAVE exhibits the following significant properties 1. They are the significant properties which the FDA intends to preserve when adopting migration policy in the future.
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**Content: Duration and number of channels.
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This table lists properties and components taken from the Florida Digital Archive WAVE preservation Action Plan, available from http://fclaweb.fcla.edu/content/wave, with additional notes:  
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**Context: Title and creating application information.
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**Behavior: N/A
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{| border="1" cellpadding="10" cellspacing="0" width=90%
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**Structure: Channel relationship (channel mapping).
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|-
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**Appearance (Rendering): Sampling frequency and bit-depth.
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|- style="background-color:#cccccc;"
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!style="width:10%"|'''property value'''
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!style="width:10%"|'''component'''
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!style="width:30%"|'''notes'''
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|-
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|duration
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|content
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|
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|-
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|number of channels
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|content
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|May be expressed as a number or as a description such as "mono", "stereo" or "surround" etc.
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|-
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|channel mapping
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|structure
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|For example, in stereo files, a channel number will be linked to either the left or the right ("channelNum="0" mapLocation="LEFT"/channelNum="1" mapLocation="RIGHT")
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|-
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|sampling frequency
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|rendering
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|This property may not be preserved through transformation to a preservation format, since conversion to WAV entails the use of a sampling frequency that is used by the WAV format (eg 441000 HZ, 48000 HZ, 96000 HZ). However, the sampling frequency of the preservation format should not be lower than that of the original format.
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|-
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|bit depth
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|rendering
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|The bit depth of the preservation format will be 16 bits unless the bit depth of the original format is higher (eg 24 bits).
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|-
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|}

Latest revision as of 16:33, 11 February 2020

Main Page > Documentation > Format policies > Significant characteristics > Significant characteristics of audio files

This page is no longer being maintained and may contain inaccurate information. Please see the Archivematica documentation for up-to-date information.

This table lists properties and components taken from the Florida Digital Archive WAVE preservation Action Plan, available from http://fclaweb.fcla.edu/content/wave, with additional notes:

property value component notes
duration content
number of channels content May be expressed as a number or as a description such as "mono", "stereo" or "surround" etc.
channel mapping structure For example, in stereo files, a channel number will be linked to either the left or the right ("channelNum="0" mapLocation="LEFT"/channelNum="1" mapLocation="RIGHT")
sampling frequency rendering This property may not be preserved through transformation to a preservation format, since conversion to WAV entails the use of a sampling frequency that is used by the WAV format (eg 441000 HZ, 48000 HZ, 96000 HZ). However, the sampling frequency of the preservation format should not be lower than that of the original format.
bit depth rendering The bit depth of the preservation format will be 16 bits unless the bit depth of the original format is higher (eg 24 bits).
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