[Mp4-tech] MPEG-4 Audio Conformance...problem with reference Wav files ?

[Umang Garg]

Dear Members,
Can someone please corroborate if the reference Wav files for AAC-LC 
kept on the following FTP fite
ftp://mpaudconf:adif2mp4@ftp.iis.fhg.de/mpeg4audio-conformance/referencesWav
have problem in their header !
Example Problem:
al01_48.wav:
The byte numbers 20 in this file contains the value 0xFE while the byte 
number 21 contains the value 0xFF.
If I am not wrong then according to the Wav PCM Format, byte number 20 
and 21 represent the AudioFormat.
For PCM(linear quatization) this value should be 1. Hence, the correct 
value for byte 20 should be 0x01 and for byte number 21 should be 0x00.
Due to this problem we can not play these Wav files in the CoolEdit and 
also in the RealOneplayer.
These comments also hold true for various other al*.wav files in the 
directory 'referencesWav' on the aforesaid FTP site.
Thanks and Regards,
Umang Garg
NeoMagic Corporation, based in Santa Clara, California, provides 
applications processors to enable new generations of handheld Internet 
systems, offering the lowest power, smallest form-factor, and best 
multimedia features and performance. The company has pioneered the 
integration of complex logic, memory and analog circuits into 
single-chip solutions. NeoMagic is mobilizing multimedia for the 
Internet age. Information on the company may be found on the World Wide 
Web at www.neomagic.com.