Audio Specifications and Standards

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====Default File/Output Settings====
 
====Default File/Output Settings====
 
* <u>masters</u>: .wav/WAVE at 24-bit/44.1khz
 
* <u>masters</u>: .wav/WAVE at 24-bit/44.1khz
**''note: [http://www.iasa-web.org/special_publications.asp IASA TC-04] calls for a minimum sampling rate of 48kHz (preferably 96kHz) [http://www.jazzpoparkisto.net/audio/audio32.html]. We will discontinue use of 44.1kHz sampling rates pending confirmation of appropriate storage space as 24/48 vs 24/44.1 should yield only an 8% increase in space requirements.''- arora, 051309
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**''note: [http://www.iasa-web.org/tc04/key-digital-principles IASA TC-04] calls for a minimum sampling rate of 48kHz (preferably 96kHz). We will discontinue use of 44.1kHz sampling rates pending confirmation of appropriate storage space as 24/48 vs 24/44.1 should yield only an 8% increase in space requirements. Projects already underway at the 24/44.1 spec will maintain that specification.'' - arora, 062910. ''Update: given remaining storage concerns, we will continue with 24/44.1.'' - arora, 030911.
 
**typically, 2s of silence is left or created at the beginning of each .wav, with 1s at the end.  
 
**typically, 2s of silence is left or created at the beginning of each .wav, with 1s at the end.  
 
**RMS levels are typically set fairly low, to -25db
 
**RMS levels are typically set fairly low, to -25db
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***[http://mixonline.com/mag/audio_aeseliminating_file_exchange/ The AES31 Standard] (2001) De Lancie, Philip.  
 
***[http://mixonline.com/mag/audio_aeseliminating_file_exchange/ The AES31 Standard] (2001) De Lancie, Philip.  
 
***[http://digitalcontentproducer.com/mag/video_aes_standard/ AES31--Eliminating the File Exchange Conundrum] (2001) Lambert, Mel.
 
***[http://digitalcontentproducer.com/mag/video_aes_standard/ AES31--Eliminating the File Exchange Conundrum] (2001) Lambert, Mel.
***see also: [http://www.cs.cf.ac.uk/Dave/Multimedia/node296.html Open Media Framework Interchange] format (OMFI)
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** [http://www.cs.cf.ac.uk/Dave/Multimedia/node296.html Open Media Framework Interchange] format (OMFI)
***see also: [http://aaf.sourceforge.net/ Advanced Authoring Format] (AAF)
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** [http://aaf.sourceforge.net/ Advanced Authoring Format] (AAF)
 
**SimpleADL
 
**SimpleADL
*** see [http://journal.code4lib.org/articles/2882 AudioRegent: Exploiting SimpleADL and SoX for Digital Audio Delivery]
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*** [http://blog.humaneguitarist.org/projects/audioregent/#SimpleADL SimpleADL]
*** see [http://blog.humaneguitarist.org/projects/audioregent/#SimpleADL SimpleADL]
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**Other
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*** [http://www.aatranslator.com.au/ AA Translator]
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 +
*Tools
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**[http://www.digitalconfidence.com/MetadataTouch.html Metadata Touch]
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**[http://bwfmetaedit.sourceforge.net/ BWF MetaEdit]

Latest revision as of 10:37, 9 March 2011

Contents

[edit] Introduction:

The following provides a brief overview of our standard audio specifications.



[edit] Technical Information:

[edit] Default File/Output Settings

  • masters: .wav/WAVE at 24-bit/44.1khz
    • note: IASA TC-04 calls for a minimum sampling rate of 48kHz (preferably 96kHz). We will discontinue use of 44.1kHz sampling rates pending confirmation of appropriate storage space as 24/48 vs 24/44.1 should yield only an 8% increase in space requirements. Projects already underway at the 24/44.1 spec will maintain that specification. - arora, 062910. Update: given remaining storage concerns, we will continue with 24/44.1. - arora, 030911.
    • typically, 2s of silence is left or created at the beginning of each .wav, with 1s at the end.
    • RMS levels are typically set fairly low, to -25db
  For information on derivatives, see For_Creating_Derivatives

[edit] Associated Hardware/Software


[edit] Resources and Links:

Personal tools