NOISE ELIMINATING DEVICE FOR BONE TRANSMITTED VOICE

摘要

PURPOSE:To provide the device in which the auditory sense of incongruity caused by tooth chattering is reduced in the voice detected by bone transmission microphone. CONSTITUTION:A noise eliminating device 3 consists of a bone transmission microphone 1 which detects the vibration of a body tissue caused by uttering and converts it to voice signals, a noise detecting section 4 which detects pulse type noises contained in the detected voice signals caused by the tooth chattering of an uttering person and a noise eliminating section 5 which eliminates the pulse type noises detected by the section 4. The section 4 extracts the waveform feature of the pulse type noises detected by the microphone 1 and detects the tooth chattering. The section 5 makes the amplitudes of detected pulse type noises small or makes them mute state or the noise waveform is replaced using waveform data before and after the noise.