皮肤听声器的数字化及去噪研究

Research on Digitalization and Denoising of Skin-hearing Device

皮肤听声器是目前最新的助听设备,由于采用纯模拟电路实现,使得其在信号处理方面存在一定的缺陷,并且噪音问题使得皮肤听声器的语音辨析能力受到影响;针对这些问题,提出了基于DSP的数字化皮肤听声器,并且将语音增强技术运用于其中,用于解决皮肤听声器的噪音问题;实验表明,基于DSP的数字化皮肤听声器克服了纯模拟电路在信号处理方面的种种缺陷,同时,语音增强技术有效地解决了皮肤听声器的噪音问题,使得皮肤听声器的语言辨析能力得到提高,听声效果达到最好,从而彻底的解决聋人听觉问题。

At present, the new hearing aids-skin-hearing device has some flaws in signal processing because it was designed by pure analogous circuit. Meanwhile, voice discriminating ability of skin--hearing device was affected by the noise. To resolve the problem, this pa per proposed the digital skin--hearing device based on DSP. Atso it used speech enhancement technology to eliminate the noise. The experimental result shows that the digital skin-hearing device based on DSP can overcome the shortcoming of pure analogous circuit in signal pro cessing. Also speech enhancement effectively resolved the noise problem of skin-hearing device. This improved the voice discriminating abil ity of the skin-hearing device and made the skin-hearing ability best. Thereby, we could completely resolve the deaf＇s hearing problem.