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Three-frequency divider

A frequency divider and three-way technology, applied in the direction of frequency response correction, frequency/direction characteristic device, etc., can solve the problems of ambiguity, shrill voice, not original sound, etc., to achieve pleasant sound quality, good loudness, The effect of improving the signal-to-noise ratio

Inactive Publication Date: 2014-11-26
鲍善翔 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-way speakers on the market now have different degrees of shrill, fuzzy, and unoriginal voices when replaying songs or singing karaoke.

Method used

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  • Three-frequency divider

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Embodiment

[0012] Such as figure 1 As shown, the three-frequency divider circuit includes a midrange output unit, a treble output unit, and a bass output unit, and the midrange output unit includes an emitter follower circuit BG1, a first active second-order bandpass filter circuit, and an adder circuit , the second active second-order band-pass filter circuit and the intermediate frequency frequency selection network oscillation amplifier circuit; the tweeter output unit includes a fourth-order high-pass filter circuit, a first constant gain phase-shifting amplifier circuit and a high-frequency frequency selection network oscillation amplifier circuit; The bass output unit includes a fourth-order low-pass filter circuit, a second constant-gain phase-shifting amplifier circuit and a low-frequency frequency-selective network oscillation amplifier circuit; wherein the output of the emitter follower circuit BG1 is connected to the first active second-order band-pass filter circuit Input, th...

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Abstract

The invention discloses a three-frequency divider which is formed by a high-frequency frequency dividing circuit, a middle-frequency frequency dividing circuit and a low-frequency frequency dividing circuit. Received audio signals are subjected to impedance conversion through an emitter follower, signal interference in a certain frequency or frequency range of the received audio signals is restrained or attenuated through an active second-order band elimination filter (BEF) formed by an active band pass filter (BPF) and a summator, output signals are divided into three paths after the input audio signals are further processed by the BPF, finally the three paths of signals are amplified respectively through corresponding frequency-selecting oscillation networks and then are sent to a main power amplifier to be amplified, and accordingly a high tone loudspeaker, a low tone loudspeaker and a middle tone loudspeaker produce sound simultaneously, and sweet-sounding music with clean and pure tone, pleasant to listen to and with moderate loudness is generated. The three-frequency divider is simple in structure and convenient to use, output audio signals are perfect and abundant in tone color and sweet-sounding and pleasant to listen to in tone quality.

Description

technical field [0001] The invention relates to an electronic frequency divider for a sound box, in particular to a computing type three-frequency frequency divider for a sound box. Background technique [0002] In the audio system, although the loudspeaker is the terminal performance part, it plays an important role. However, if the frequency divider is not handled well, it will cause sound phase distortion, blurred sound, etc. Three-way speakers are generally divided into speakers with more than three units, including a tweeter unit, a midrange unit and a bass unit. There is a frequency divider inside the box, which corresponds to the high, middle and low units for frequency division. The three-way speakers on the market now have varying degrees of shrill, fuzzy, and unoriginal voices when replaying songs or singing karaoke. Contents of the invention [0003] The present invention aims to solve at least one of the above-mentioned technical problems. [0004] For this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/22H04R3/04
Inventor 鲍善翔刘文喜
Owner 鲍善翔
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