Implementation Date : 2005.12.01
Revision Date : 2012.08.01
Review Date : 2012.08.01
Next Review : 2015.08
- identification: Yes
- validation: Yes. See the validation scheme described in Section 1.13 of WAVE Action Plan Background Report.
- characterization: Yes. Extracted technical metadata are described in section 2 of WAVE Action Plan Background Report.
- migration: No
- normalization: Yes
Each audio stream contained in the WAVE file is normalized into an uncompressed PCM(LPCM) audio stream with a sample size of 16 bits/sample. The normalized audio stream will have the same sample rate (samples/second) as the original audio stream in the WAVE files.
Supported Audio Stream Format Supported Audio Stream Format Format Tag Normalized Audio Stream LPCM 0x0001 Not Applicable
WAVE exhibits the following significant properties (note 1). They are the significant properties which the FDA intends to preserve when adopting migration policy in the future.
- content: Duration and number of channels.
- context: Title and creating application information.
- behavior: N/A
- structure: Channel relationship (channel mapping).
- appearance: Sampling frequency and bit-depth.
Long-term Preservation Strategy
Long-term Preservation Strategy for the original
Migrate to newer WAVE versions or to an open, standardized and well supported audio file format that is to be a good successor for the WAVE file format.
Long-term Preservation Strategy for the normalized
Normalized version will not be migrated.
- Audio Stream: Migrate to an open, standardized and well supported audio stream format that is losslessly compressed.
1. InSPECT, “Framework for the definition of significant Properties”, February 5, 2008