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专利名称：Methods and apparatus for adjusting a level
of an audio signal
发明人：Alan Jeffrey Seefeldt申请号：US16211568申请日：20181206公开号：US103320B2公开日：20190820
专利附图：
摘要：The invention relates to methods and apparatus for adjusting a level of an audiosignal. An audio signal is divided into a plurality of frequency bands. Modification
parameters are obtained for at least one of the plurality of frequency band. Gain factors
are derived for at least one of the plurality of frequency bands, the gain factors
determined based on the amplitude scale factors. The gain factors are smoothed. A levelof noise from noise compensation factors is determined. The gain factors are applied toat least one of the frequency bands to generate gain adjusted frequency bands. The levelof noise is adjusted based on the gain adjusted frequency bands. At least one of thefrequency bands is filtered with a filter generated with the filter coefficients. The pluralityof frequency bands is synthesized to generate an output audio signal.
申请人：Dolby Laboratories Licensing Corporation
地址：San Francisco CA US
国籍：US
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