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Echo-Cancelling Device and Echo-Cancelling Method
Echo-Cancelling Device and Echo-Cancelling Method
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机译:回声消除装置及回声消除方法
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摘要
An echo-cancelling device includes an audio input/output (I/O) terminal, an audio-receiving module, an analog-to-digital (A/D) converter, and a processor is provided. The A/D converter is electrically connected to the audio-receiving module. The processor is electrically connected to the A/D converter and the audio I/O terminal. The audio I/O terminal receives an external reference signal from an electronic device. The audio-receiving module receives an input audio and an output audio from the electronic device, and generates an analog input signal having the input audio and the output audio. The A/D converter generates a digital input signal according to the analog input signal. The processor cancels the output audio to generate a second (digital) sound signal according to the digital input signal and the external reference signal. Finally, the processor transmits the second (digital) sound signal to the electronic device via the audio I/O terminal.
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机译:回波消除装置包括音频输入/输出(I / O)端子,音频接收模块,模数(A / D)转换器和处理器。 A / D转换器电连接到音频接收模块。处理器电连接到A / D转换器和音频I / O端子。音频I / O端子从电子设备接收外部参考信号。音频接收模块从电子设备接收输入音频和输出音频,并生成具有输入音频和输出音频的模拟输入信号。 A / D转换器根据模拟输入信号产生数字输入信号。处理器根据数字输入信号和外部参考信号消除输出音频以产生第二(数字)声音信号。最后,处理器通过音频I / O端子将第二(数字)声音信号传输到电子设备。
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