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1.发明申请ADAPTIVE LOUDNESS LEVELLING METHOD FOR DIGITAL AUDIO SIGNALS IN FREQUENCY DOMAIN 有权频域中数字音频信号的自适应朗读方法公开(公告)号：US20160191007A1
公开(公告)日：2016-06-30
申请号：US14588398
申请日：2014-12-31
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Wei Li , Sapna George
IPC: H03G3/20
Abstract: Embodiments of the present disclosure are directed to techniques for adjusting the amplitude of a digital audio signal in the frequency domain to control the perceived loudness of the audio signal at a desired level. In one embodiment, a method first adjusts the audio signal to a desired loudness level by applying an adaptive wideband gain and thereafter a multi-band compression is applied to further reduce a dynamic range of the audio signal, and noise analysis and temporal masking operations are also performed to provide a pleasant sound for a listener or listeners.
Abstract translation: 本公开的实施例涉及用于调整频域中的数字音频信号的幅度的技术，以将音频信号的感知响度控制在期望的水平。 在一个实施例中，一种方法首先通过应用自适应宽带增益来将音频信号调整到期望的响度级，然后施加多频带压缩以进一步减小音频信号的动态范围，并且噪声分析和时间屏蔽操作是 还为听众或听众提供了愉快的声音。
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公开(公告)号：US09647624B2
公开(公告)日：2017-05-09
申请号：US14588398
申请日：2014-12-31
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Wei Li , Sapna George
Abstract: Embodiments of the present disclosure are directed to techniques for adjusting the amplitude of a digital audio signal in the frequency domain to control the perceived loudness of the audio signal at a desired level. In one embodiment, a method first adjusts the audio signal to a desired loudness level by applying an adaptive wideband gain and thereafter a multi-band compression is applied to further reduce a dynamic range of the audio signal, and noise analysis and temporal masking operations are also performed to provide a pleasant sound for a listener or listeners.
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