Audio processing in a portable listening device

便携式听音设备中的音频处理

Abstract

The invention relates to a method of processing an audio signal in a portable listening device, the audio signal comprising a low frequency part having an LF-bandwidth f LF and a high-frequency part having a HF-bandwidth deltaf HF . The invention further relates to a listening device and to a listening system. The object of the present invention is to improve performance or save power in a portable listening device. The problem is solved in that the method comprises a) providing an audio input signal consisting of said low frequency part having an LF-bandwidth deltaf LF ; b) performing at least one signal processing step on the low frequency part of the audio signal; and c) performing a bandwidth extension process on said low frequency part of the audio signal to generate said high-frequency part of the audio signal, thereby generating or regenerating said audio output signal with a full bandwidth deltaf full comprising said LF-bandwidth f bF and said HF-bandwidth deltaf HF. An advantage of this is that power consumption is reduced. The invention may e.g. be used for portable communication device, mobile telephones or listening devices, such as a hearing aids, ear protection devices, headsets, head phones, etc.
本发明公开了在便携式听音设备中处理音频信号的方法,音频信号包括具有LF带宽ΔfLF的低频部分和具有HF带宽ΔfHF的高频部分。本发明方法包括:a)提供由具有LF带宽ΔfLF的所述低频部分组成的音频输入信号;b)对音频信号的低频部分执行至少一信号处理步骤;及c)对音频信号的所述低频部分执行带宽扩展处理以产生音频信号的所述高频部分,从而产生或再生具有全带宽Δffull即包括所述LF带宽ΔfLF和所述HF带宽ΔfHF的音频输出信号。本发明提高了便携式听音设备的性能或使其功耗降低。本发明可用于便携式通信设备、移动电话或听音设备如助听器等。

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Cited By (3)

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    CN-104715756-AJune 17, 2015百度在线网络技术(北京)有限公司Audio data processing method and device
    CN-104835488-AAugust 12, 2015宁夏共享精密加工有限公司Factory-used apparatus for reducing noise
    CN-104871436-AAugust 26, 2015摩托罗拉解决方案公司用于减轻在数字无线电接收器中的反馈的方法和设备