A method and circuit of PSD-based laser voice restoration

Abstract

The invention discloses a laser voice restoration method and circuit based on a PSD. The laser voice restoration method based on the PSD comprises the design of a PSD photovoltaic conversion circuit module; the design of a current pressure converting circuit module and the design of a differential amplification circuit module. The laser voice restoration circuit based on the PSD comprises the PSD photovoltaic conversion circuit module which is used for indirectly obtaining a relative value of a vibration amplitude of glass and generating current signals with strength changing; the current pressure converting circuit module which is used for respectively converting current pressure of two-way weak current signals output by the PSD photovoltaic conversion circuit module and is connected with the PSD photovoltaic conversion circuit module; and the differential amplification circuit module which is used for carrying out simultaneous difference and main amplification and filtering of two-way signals, is connected with the current pressure converting circuit module and enables a signal amplitude to reach about 3 V to facilitate the collection of rear-end signals and the restoration of laser voice signals. According to the laser voice restoration method and circuit based on the PSD, an RC (resistor-capacitor) network is used in combination with an AD 704 to achieve the filtering of the signals through the current pressure converting circuit module; so that the signal quality is improved; and the AD 8274 is utilized to complete the differential amplification of two-way voltage signals.

Description

technical field [0001] The invention belongs to the technical field of laser voice restoration, and in particular relates to a PSD-based laser voice restoration method and circuit. Background technique [0002] Most existing laser voice restoration system circuits use discrete position detectors to collect laser position signals. The prior art has the problems of low precision, less current signal processing, lack of filtering or insufficient filtering. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a PSD-based laser voice restoration method and circuit, aiming at solving the problems of low precision, less current signal processing, lack of filtering or insufficient filtering existing in the prior art. [0004] The embodiment of the present invention is achieved in this way, a method for laser voice restoration based on PSD, the method for laser voice restoration based on PSD comprises the following steps: [000...

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a PSD-based laser voice restoration method and circuit, aiming to solve the problems of low precision, less current signal processing, lack of filtering or insufficient filtering in the prior art

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