College entrance examination information query voice broadcasting device

Abstract

The invention discloses a college entrance examination information query voice broadcasting device, which comprises a preamplifier, a band-pass filter and a power amplifier, wherein the preamplifier, the band-pass filter and the power amplifier are connected in sequence. The preamplifier comprises a first resistor, a second resistor, a fourteenth resistor, a third capacitor, a thirteenth capacitor, a fourteenth capacitor, a first amplifier and a power supply, wherein the negative pole of the power supply, the third capacitor, the first resistor, the second resistor and the fourteenth capacitor are connected in sequence; the reverse input end of the first amplifier is connected to a line where the first resistor and the second resistor are connected; the positive pole of the power supply, the thirteenth capacitor, the fourteenth resistor and the positive input end of the first amplifier are connected in sequence; and the output end of the first amplifier is connected to a line where the second resistor and the fourteenth capacitor are connected. The device selects mass college information through the auditory sense, and receives results through a voice broadcast mode, thereby improving query efficiency effectively and enhancing the query effect.

Description

technical field

[0001] The invention relates to a voice broadcast device, in particular to a voice broadcast device for college entrance examination information query. Background technique

[0002] The college entrance examination is a means of domestic selection of talents to enter colleges and universities for further studies. After the college entrance examination, information inquiries about major universities and admission scores over the years are a headache for the majority of high school students and parents who have just graduated. Although they can be found on the Internet To the relevant information of major universities, but the information is not concentrated enough, so an information platform query system is needed to solve the troubles of candidates and parents.

[0003] Information query systems are very common, but general query systems only provide text display, which can cause fatigue and confusion when searching for a large amount of information. Therefor...

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