Shiatsu type fundamental frequency adjustment electronic artificial larynx

Abstract

The invention relates to a shiatsu type fundamental frequency adjustment electronic artificial larynx. The shiatsu type fundamental frequency adjustment electronic artificial larynx is characterized by changing fundamental frequency of a glottal wave by a shiatsu switch button at any time so as to change voice tones and mainly comprising a shiatsu sensing part, a waveform generating and processing system, a power amplification circuit and an electricity-force conversion system. The shiatsu type fundamental frequency adjustment electronic artificial larynx is characterized in that a glottal waveform having individual voice characteristics is stored in the waveform generating and processing system; the fundamental frequency of the waveform is changed under the control of the switch / shiatsubutton at any time during the process of waveform generation; the generated waveform is converted to an analog signal through a digital to analog conversion module in the system; and the signal waveform output by a digital to analog converter is applied to the electricity-force conversion system after power amplification. The amplified waveform is converted to mechanical vibration through an electricity-force energy converter of a high magnetic field, the vibration is applied tp the neck of a patient through a vibration film to produce the glottal wave, and the waveform forms sound outside a lip after being modulated by a tongue, a nasal cavity, an oral cavity, a lip, and the like of the patient.

Description

technical field [0001] The invention belongs to the field of voice rehabilitation for voice-deficit patients, and relates to an electronic artificial larynx with acupressure-type fundamental frequency adjustment. Background technique [0002] Among the various means used by human beings to communicate, voice is the most basic, effective and important one. At present, there are hundreds of thousands of patients with laryngeal cancer and other serious laryngeal diseases in the world. In order to treat laryngeal diseases, they have to undergo laryngectomy. Lose the ability to use voice for language communication. Electronic artificial larynx has been used as an external voice rehabilitation method for patients with voice loss for about 40 years. The existing electronic artificial larynx works in a simple way. The patient puts the device against the throat, and the pulse generated by the control switch is applied to the patient's neck through vibration, transmitted to the voca...

AI Technical Summary

Problems solved by technology

The current electronic artificial larynx has many shortcomings such as lack of voice change, especially the lack of tone change, obvious machine smell, and large background noise.

[0003] In order to improve the pronunciation effect, the current researchers focus on the removal of the background noise of the electronic artificial laryngeal, and the control of the electronic artificial laryngeal pulse generation through EMG and other signals. Due to the complexity of the EMG signal generation and analysis, The effect is not ideal

Some researchers use the collection and analysis of voice signals, image signals and noise signals to regulate the voice of electronic artificial laryngeal, the mechanism is complicated, the cost is increased, and the reliability is low

Based on the limitations of currently existing electronic laryngo technology, the pitch of the voice produced by the electronic artificial larynx does not change throughout the speaking process, which is the main reason for the difference in the quality of the voice of the electronic artificial larynx and the normal voice

Images