| 摘要 |
PURPOSE: A method for processing the signal of a digital hearing aid is provided to automatically erase specific peripheral noises of a narrow frequency band using a spectrum noise erasing algorithm. CONSTITUTION: In a frame, a digital signal is processed with respect to 128 input signals. A final voice signal is transferred to an output buffer. A programming algorithm is implemented in order to synchronize 32 output buffers to a receiver in 0.0625msec of sampling time. A spectrum amplitude modulation signal is processed after a fast Fourier transform is implemented. A fast Fourier reverse transform algorithm is implemented to calculate output voice data. A spectrum amplitude modulation algorithm is implemented to mainly concentrate conversation voice. |
