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Laser voice restoration method and circuit based on PSD (Phase-Sensitive Detector)

A photoelectric conversion circuit and voice technology, applied in the direction of reducing crosstalk, electromagnetic wave re-radiation, line transmission components, etc., can solve problems such as low precision, insufficient thoroughness, lack of filtering or filtering, etc.

Active Publication Date: 2013-09-11
XIAN UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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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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  • Laser voice restoration method and circuit based on PSD (Phase-Sensitive Detector)
  • Laser voice restoration method and circuit based on PSD (Phase-Sensitive Detector)
  • Laser voice restoration method and circuit based on PSD (Phase-Sensitive Detector)

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Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0086] figure 1 The flow of the PSD-based laser speech restoration method provided by the present invention is shown. For ease of illustration, only the parts relevant to the present invention are shown.

[0087] The method for laser voice restoration based on PSD of the present invention, the method for this PSD-based laser voice restoration comprises the following steps:

[0088] Design of PSD photoelectric conversion circuit module;

[0089] Design of current-voltage conversion circuit module;

[0090] The design of the differential amplifier circuit module.

[0091] As an optimization scheme of the embodiment of th...

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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...

Claims

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Application Information

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IPC IPC(8): H04B3/32H04B3/46H03F3/45G01S17/46
Inventor 杨祎吕肖刚刘芳
Owner XIAN UNIV OF POSTS & TELECOMM
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