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发明公开
CN105530569A 耳机混合主动噪声消除和噪声补偿 无效 - 撤回

耳机混合主动噪声消除和噪声补偿
摘要：
本公开内容涉及耳机的混合主动噪声消除和噪声补偿。音频处理装置包含选择器和噪声补偿单元。选择器能够基于外部噪声和表示待通过耳机再现的声音的内容音频信号的至少之一的至少一个特征来选择多个第一传递函数之一。噪声补偿单元能够对第一音频信号应用所选择的第一传递函数来计算第二音频信号，并且至少基于第二音频信号来得出用于噪声补偿的增益。该至少一个特征能够被用来区分第一传递函数中的至少两个。第一传递函数中的每个第一传递函数能够将第一音频信号转换为第二音频信号，该第二音频信号被假定为表示由第一音频信号表示的声音的到达佩戴耳机的收听者的耳膜的版本。第一音频信号是表示外部噪声的噪声信号和内容音频信号之一。
摘要（英）：

The invention relates to combined active noise cancellation and noise compensation in a headphone. An audio processing device includes a selector and a noise compensation unit. The selector can select one of a plurality of first transfer functions based on at least one feature of at least one of an external noise and a content audio signal representing a sound to be reproduced through the headphone. The noise compensation unit can compute a second audio signal by applying the selected first transfer function to a first audio signal, and derive gains for noise compensation at least based on the second audio signal. The at least one feature can be used for distinguishing at least two of the first transfer functions. Each of the first transfer functions can transform the first audio signal to the second audio signal which is assumed as representing a version of the sound represented by the first audio signal, which arrives at an eardrum of a listener wearing the headphone. The first audio signal is one of a noise signal representing the external noise and the content audio signal.

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