SYSTEM AND METHOD FOR NON-DESTRUCTIVELY NORMALIZING LOUDNESS OF AUDIO SIGNALS WITHIN PORTABLE DEVICES
摘要
<p>Many portable playback devices cannot decode and playback encoded audio content having wide bandwidth and wide dynamic range with consistent loudness and intelligibility unless the encoded audio content has been prepared specially for these devices. This problem can be overcome by including with the encoded content some metadata that specifies a suitable dynamic range compression profile by either absolute values or differential values relative to another known compression profile. A playback device may also adaptively apply gain and limiting to the playback audio. Implementations in encoders, in transcoders and in decoders are disclosed.</p>
申请公布号
CA2787466(A1)
申请公布日期
2011.08.18
申请号
CA20112787466
申请日期
2011.02.03
申请人
DOLBY LABORATORIES LICENSING CORPORATION;DOLBY INTERNATIONAL AB
发明人
RIEDMILLER, JEFFREY C.;MUNDT, HARALD H.;SCHUG, MICHAEL;WOLTERS, MARTIN