Audio Specifications and Standards

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**[http://www.digitalpreservation.gov/formats/fdd/fdd000051.shtml RealAudio v. 10]
 
**[http://www.digitalpreservation.gov/formats/fdd/fdd000051.shtml RealAudio v. 10]
  
*Audio Decision Lists (ADL)
+
*Audio Decision List (ADL)/AES31-3
 
**[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.

Revision as of 12:32, 14 May 2009

Contents

Introduction:

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



Technical Information:

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) [1]. 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
    • note: Our current audio suite Sound Forge does not support export/save of the preferred BWF, Broadcast Wave format (.wav). - arora, 051309
    • 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
  • deliverables: .rm/RealAudio v. 8 at 16-bit/44.1kHz, 105 kbps (stereo)
    • in the near future, our workflow will allow for some enhancement of the Real Audio files (dynamic range compression, higher RMS levels) in order for delivery of pragmatic derivatives; with the preservation .wav file unaffected by such enhancements.

Associated Hardware


Resources and Links:

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