The NOTE states as follows:
NOTE — For the purpose of setting appropriate transport flags, implementations should not assume that all audio channels in Channel Configuration 4 contain linear PCM audio samples suitable for direct conversion to an analog audio signal.
Notes are informative; therefore, a note cannot contain "should".
The NOTE states as follows: NOTE — For the purpose of setting appropriate transport flags, implementations should not assume that all audio channels in Channel Configuration 4 contain linear PCM audio samples suitable for direct conversion to an analog audio signal.
Notes are informative; therefore, a note cannot contain "should".