发明名称 |
METHOD, APPARATUS AND COMPUTER PROGRAM FOR CALCULATING AND ADJUSTING THE PERCEIVED LOUDNESS OF AN AUDIO SIGNAL |
摘要 |
<p>One or a combination of two or more specific loudness model functions selected from a group of two or more of such functions are employed in calculating the perceptual loudness of an audio signal. The function or functions may be selected, for example, by a measure of the degree to which the audio signal is narrowband or wideband. Alternatively or with such a selection from a group of functions, a gain value G[t] is calculated, which gain, when applied to the audio signal, results in a perceived loudness substantially the same as a reference loudness. The gain calculating employs an iterative processing loop that includes the perceptual loudness calculation.</p> |
申请公布号 |
EP1629463(A2) |
申请公布日期 |
2006.03.01 |
申请号 |
EP20040776174 |
申请日期 |
2004.05.27 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
SEEFELDT, ALAN, JEFFREY;SMITHERS, MICHAEL, J.;CROCKETT, BRETT, GRAHAM |
分类号 |
G10L11/00;H03G9/02;(IPC1-7):G10L11/00 |
主分类号 |
G10L11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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