CN201025733Y

CN201025733Y - MP3 and MP4 active sound box

Info

Publication number: CN201025733Y
Application number: CNU2007200017455U
Authority: CN
Inventors: 田君儒
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-08
Filing date: 2007-01-08
Publication date: 2008-02-20
Anticipated expiration: 2017-01-08

Abstract

The utility model relates to an active loudspeaker of MP3 and MP4, which is organically composed of a MP3 or a MP4 machine and an active loudspeaker. The active loudspeaker is characterized in that the box shape is a rectangular body, the MP3 or MP4 machine is positioned obliquely on the front apex angle. Components arranged on the front panel from top to bottom are: two blaring horns and display of multi-stage balanced trademark, various electronic adjustment knobs, a tenor horn at the center, the outlet of the bass horn and the USB interface at the bottom. In addition, two bass outlets are mounted on the lower part of the left and right sides respectively, audio signal input and output interfaces are arranged on the proper place at the back of the active loudspeaker. Control circuits are arranged on a circuit board together, comprising a power support, amplification, a signal matching and a pre-balanced circuit. The utility model has good acoustics, wide and cheap program source, can receive various program of MP3 or MP4 format and FM radio, sing karaoke OK, record, play and amplify sound, which is a loudspeaker with advantages of simple structure, practical design, easy operation and convenient use.

Description

MP3, MP4 active audio amplifier

Technical field

The utility model relates to electronic technology, particularly relates to a kind of MP3 or MP4 active audio amplifier.

Background technology

Along with the continuous progress and the development of society, people are improving the type requirements and the requirement of convenient and practical property of electronic product, wish to have a kind of economic, practical, convenient and high-quality audio amplifier equipment;

The internal memory of MP3 or MP4 machine is big, and function is many, and is small-sized attractive in appearance, easy to carry, but is subjected to the restricted application of its sound equipment of structural constraint, and its acoustics is unsatisfactory when listening with self loudspeaker; Though and the playback effect of active audio amplifier is good, remove be used for supporting home theater be exactly will with the computer coupling, this is subjected to condition restriction again except power consumption is many, has influenced the popularization enjoyment of many families.

Based on above-mentioned factor, the utility model is maximized favourable factors and minimized unfavourable ones, and the active audio amplifier of a kind of MP3 or MP4 is provided, can be under the multiple function prerequisite that guarantees MP3 or MP4 machine, the ear that makes its tone quality improving and being used for satisfy most personnel is listened requirement, and machine stored song, storytelling, opera, cross-talk etc. are more, can satisfy all ages and classes section personnel's ear and listen needs, and can delete easily and upgrade, processing ease, cost is low, and the life-span is long, and is easy for installation.

The utility model content

The purpose of this utility model is to provide a kind of acoustics good, simple to operate, spend few MP3 or MP4 tone playing equipment for family.

The utility model is to realize its purpose by the following technical solutions.

(1) outer surface part:

Integral body sees it is the moulding audio amplifier of an injection moulding or wooden system, positive plate face portion, from top to bottom: the drift angle place is tilting complete machine MP3 or MP4, the upper part of panel, one the first from left right side is two loudspeaker mouths, the centre is balanced demonstration of multistage and trade mark display window, by under be exactly the various electrical adjustment knobs of audio amplifier, the centre of panel is the mediant trumpet mouth, the lower part of panel is bass outlet, USB interface is placed on the inferior horn place of panel, in addition, about the bottom, two sides, consistent with the outlet of the bass of front panel, a bass outlet is also respectively arranged, multiple audio input interface is housed in the appropriate position, back of audio amplifier.

(2) case inner part:

Loudspeaker and mediant trumpet are fixed on the front panel corresponding with its delivery outlet, the bass horn mouth down is fixed on the lower part of leaning in the case, all the other, circuit such as DC power supply, power amplifier, Signal Matching, preposition equilibrium are put and are contained on the wiring board, in addition, audio input interface is installed in the rear board appropriate location, and MP3 or MP4 machine are tilting at the front top rake place.

(3) wiring board electronic circuit part:

The basic circuit principle comprises: DC power supply circuit, power amplification circuit, the circuitry of preposition equalizing circuit, Signal Matching circuit and MP3 or MP4 connects with MP3 or MP4 machine, high mediant trumpet, bass horn and each external audio frequency input/output port by circuit.Be that the USB mouth is uploaded in LCDs, program download in addition.

The utility model is an audifier that MP3 or MP4 machine and active audio amplifier are organically combined, and MP3 or MP4 are the storage areas of program source, and active audio amplifier is to expand the playback part.The combination of the two can realize extraordinary acoustics, and program wide material sources cheapness can be listened the program such as music, opera, cross-talk, storytelling of MP3 format, can listen FM broadcasting, but sing karaoke can carry out long-time high-quality recording, playback and amplifies, and also can work as language repeater and use.

The utility model has the advantages that: tonequality is better than the equal audio amplifier of other source of sound; Program get extensively, be easy to get, substantially all be free; The search of program and searching, play all fastly, that is to say that the function that the MP3 machine is had all is retained in the utility model.

Description of drawings

Fig. 1 looks the profile signal for master of the present utility model;

Fig. 2 looks the vertical profile structural representation for the right side of the present utility model;

Fig. 3 is the basic structure block diagram of circuit theory.

Among the figure, 1 is sound box bodies, and 2 is MP3 or MP4 machine, 3 is that multistage is balanced shows and the trade mark display screen that 4 is loudspeaker, and 5 is the electrical adjustment knob, 6 is mediant trumpet, and 7 is the bass horn mouth, and 8 is USB interface, 9 is bass horn, 10 is power circuit, and 11 is power amplification circuit, and 12 is the Signal Matching circuit, 13 is preposition equalizing circuit, and 14 is external multiple audio signal input/output port.

Embodiment

Box shape 1 of the present utility model is identical with conventional audio amplifier, it is a rectangular cavity body, MP3 or MP4 machine 2 tilting drift angle places in front, front panel is balanced demonstration of multistage and trade mark display screen 3 from top to bottom, there are two loudspeakers 4 on the both sides of screen, down be: one group of electrical adjustment knob 5, a mediant trumpet 6, bass horn mouth 7 and USB interface 8, also have two bass horn mouth branches to be located at the bottom of two sides in addition, all the other, each external audio frequency signal input/output port 14, be placed in the suitable place of rear board, bass horn 9 mouth downs be fixed in the case by lower part, all the other power circuits 10, power amplification circuit 11, Signal Matching circuit 12, preposition equalizing circuit 13 all is fixed on the wiring board and is contained in the case.

Contrast Fig. 1, Fig. 2 and electric theory diagram below, its course of work and use be described further:

All programs of MP3 format on the network, interior standby to MP3 of the present utility model or MP4 machine 2 with computer by joint lines and USB interface 8 downloaded stored, put when listening, the audio signal of its machine program map has been sent to Signal Matching circuit 12 and has made it distortion and diminish, carrying out tonequality through preposition equalizing circuit 13 then handles, be sent to the power amplifier 11 of high-fidelity again, the audio signal that is exaggerated divides two-way to enter into woofer 9 and medium and high pitch loudspeaker 4, and the sound equipment program of releasing at last is high-quality sound.Whole adjusting and control are undertaken by the button on adjusting knob 5 and MP3 or the MP4 machine 2, DC power supply circuit 10 is power amplification circuit 11 and MP3 or 2 power supplies of MP4 machine, each external audio frequency signal input/output port 14 on the casing is delivery outlets of the audio signal input port of microphone, VCD, DVD, CD, TV, MP3 and earphone, circuit, power etc.

The utility model has solved the good signal matching problem that the signal of powerup issue, the active audio amplifier of MP3 or MP4 comes source problem and MP3 or MP4 and active audio amplifier preferably, be a kind of simple, practical, tonequality is good, processing ease, audio amplifier easy to use.

The utility model has kept all functions of original MP3 or MP4 machine, but the display screen display program menu on the machine etc., and have FM broadcast radio function, can switch adjusting according to individual demand.

The utility model can install stereo pair of audio amplifier power audio output port in the back additional.

Claims

1. a MP3, MP4 active audio amplifier are formed by MP3 machine or MP4 machine and active audio amplifier organic assembling, it is characterized in that:

Box shape is a rectangular cavity body, MP3, the tilting drift angle place in front of MP4 machine, the upper part of panel, one the first from left right side is two loudspeaker mouths, the centre is balanced demonstration of multistage and trade mark display window, by under be the various electrical adjustment knobs of active audio amplifier, the centre of panel is the mediant trumpet mouth, following picture partly is the bass outlet, and the inferior horn of panel is a USB interface, in addition, about the bottom, two sides, consistent with the bass outlet of front panel, a bass outlet is also respectively arranged, in the appropriate position, back of audio amplifier the audio signal input/output interface is housed; In casing, loudspeaker and mediant trumpet are fixed on the front panel corresponding with its delivery outlet, and the bass horn mouth down is fixed on the lower part of leaning in the case, and the control circuit bulk cargo is on a wiring board.

2. a kind of MP3 according to claim 1, MP4 active audio amplifier, it is characterized in that, control circuit on the wiring board includes DC power supply circuit, power amplification circuit, Signal Matching circuit, preposition equalizing circuit, connects with MP3 or MP4 machine, high mediant trumpet, bass horn and each external audio frequency input/output port by circuit.