CN201001197Y

CN201001197Y - 5.1 track earphone with USB interface

Info

Publication number: CN201001197Y
Application number: CNU2007200474554U
Authority: CN
Inventors: 颜聪裕
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-12
Filing date: 2007-01-12
Publication date: 2008-01-02
Anticipated expiration: 2017-01-12

Abstract

The utility model relates to the electronic product technology field, in particular to a 5.1 sound track earphone with an USB interface. The utility model comprises an input interface, a line controller and a 5.1 sound track earphone, the three parts are electrically connected, the input interface is an USB plug, a digital and analog signal switching circuit is arranged in the line controller, and the line controller is provided with a volume increasing button, a power supply switch button, a volume reducing button, and a microphone mute button; a prepositive left horn, a prepositive right horn, a postpositive left horn, a postpositive right horn, a central left horn, a central right horn, a low-sounding left vibrator and a low-sounding right vibrator are respectively arranged in the left earphone shell and the right earphone shell, and the left earphone shell or the right earphone shell is provided with a microphone. The utility model adopts the USB interface, thus making the earphone have the plug and play function, and simplifying the connection way; the utility model integrates the 5.1 sound track output and the stereophonic sound microphone sound effect input of high quality sound, the speech quality is good, therefore the utility model applies to 3D games and online network games, and can also be used for direct communication and combined games through speech with companions.

Description

5.1 sound channel earphones with USB interface

Technical field:

The utility model relates to technical field of electronic products, refers in particular to a kind of 5.1 sound channel earphones with USB interface.

Background technology:

Along with the continuous development of computer technology, the diversified development of computer function, multimedia application more and more widely, building home theater on PC has become popular configuration.At music appreciating, when watching film, earphone brings people very big spiritual enjoyment as important multimedia audio output equipment, and this just requires to handle and to pay attention to the audio system of complicated multi-channel sound effect.And the output of traditional computer audio frequency must be by sound card equipment, and it is converted into audio signal output to loudspeaker with digital signal, produces sound.And sound card must be in the computer housing usually, and this just makes it be subjected to the electromagnetic interference of numerous electronic devices in the cabinet unavoidably, and makes the audio signal distortion of its generation.And simultaneously, software, the hardware of computer use has at present possessed 5.1 sound channels and has play condition; USB interface is also popularized in computer, so pursue acoustic music-lover and computer game player, expect a kind of collect sound field location, sound source move etc. apart from, channel separation and sound have multichannel, the effective 5.1 sound channel surround sound earphones that can be directly be used for computer by USB interface in time come out.

Summary of the invention:

The purpose of this utility model is to provide a kind of anti-electromagnetic wave interference performance that strengthens earphone, makes sound become pure, realizes the sound of high frequency, and has plug and play, 5.1 sound channel earphones with USB interface simple to operate, easy to use.

5.1 sound channel earphones with USB interface described in the utility model, it has input interface, line control machine and 5.1 sound channel earphones that externally connect, the three electrically connects, input interface is a USB plug, be provided with numeral and analog signal conversion in the line control machine, on line control machine, also be provided with increase sound volume button, power switch button, reduce sound volume button and mic mute button; Be respectively arranged with preposition left and right loudspeaker in the left and right sides auricular concha of earphone, rearmounted left and right loudspeaker, central left and right loudspeaker and the left and right electromagnetic shaker of supper bass, and in left and right auricular concha one is provided with microphone.

Also be provided with the indicator light of difference display working condition and microphone state on the line control machine, indicator light adopts long light-emitting diode of life-span.

The power pin of the USB plug of input interface is connected to the electric source filter circuit that capacitor C 21, C22 compose in parallel through power switch button, and being connected to power supply input pin in the integrated circuit (IC) 1 by inductance L 10, two power supply input pins of integrated circuit (IC) 1 are parallel with filter capacitor C9, C10, C11, C12 equally; Another pin of USB plug is received power ground and signal ground on the line control machine interior circuit board respectively by inductance L 11, L12; Digital signal pin in the USB plug inserts corresponding digital signal pin in the integrated circuit (IC) 1 by resistance R 14, R15; Loudspeaker or electromagnetic shaker that D/A (D/A) conversion in the integrated circuit (IC) 1 and power amplification circuit output pin are connected to each sound channel in the earphone respectively.

Microphone is connected with bias voltage output pin in the integrated circuit (IC) 1 through resistance R 9, capacitor C 16, resistance R 10, inductance L 9; Capacitor C 17 is connected to USB plug through the audio frequency input pin that capacitor C 14, C15 are coupled to integrated circuit (IC) 1 by integrated circuit (IC) 1 digital signal output pin and through resistance R 14, R15.

The utility model is the circuit that has increased a digital-to-analogue conversion between USB interface and 5.1 sound channel earphones, and the digital-to-analogue conversion work with former cause sound card is finished has moved on on the earphone.USB interface is carried out the signal transmission with digital form, can never be subjected to the interference of external electromagnetic clutter during output procedure, the analog signal of having removed sound card output from is subjected to coming from the interior electromagnetic interference of cabinet and can makes sound become definitely pure, can reach the sound of high frequency.And the utility model has adopted USB interface, and it makes this earphone have the function of plug and play, and entire product only has single structure, the simplification connected mode.In addition, the utility model has been integrated the output of 5.1 sound channels and the input of stereophony microphone audio of high-quality sound, because microphone signal transmits with digital audio, so can promote speech quality, increase the speech recognition success rate, adapt to 3D recreation and online online game,, more can directly link up associative play with voice with the companion except available speech control.Simultaneously, the solution that the earphone that the utility model provides combines with microphone can be guaranteed the signal quality in the distance learning of spider lines, and attaching plug, 3.5mm audio jack are directly integrated by USB plug, thereby simple to operate, easy to use.

Sound dynamic effect of the present utility model and senior middle school bass aspect are outstanding than sound card, and music is melodious, and sense of movement is strong, and the sound quality of output is significantly good.Can both well show for extremely trickle sound in some films, music and the recreation.Sound such as soldier in the recreation walks on the desert neutralizes and the careless sound that contacts in thick grass; Draw the sound of rifle bolt, distant place stray bullet, can listen very clearly, feel distinct clear.The multichannel audio system performance that compares to common sound card configuration is outstanding, and the sound card equipment of alternative tradition.

Description of drawings:

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is a line control machine button distribution map of the present utility model;

Fig. 3 is the circuit diagram of the utility model one preferred embodiment.

Embodiment:

As Fig. 1, the utility model comprises input interface 1, line control machine 2 and 5.1 sound channel earphones, 3 three parts of external connection.Wherein line control machine 2 has four buttons, and being respectively increases sound volume button 21, and power switch button 22 reduces sound volume button 23 and mic mute button 24; Also have relay indicating light 25 and microphone indicator light 26 in addition.5.1 the numeral of sound channel signal and microphone signal and analog-converted are finished by the circuit in the line control machine 2.

Line control machine 2 one ends are connected with band microphone 5.1 sound channel earphones 3 by lead, and the playback of 5.1 sound channel surround sounds is finished by it.Line control machine 2 other ends are connected with the input interface 1 that adopts USB plug by lead, and the power supply input is finished by single USB plug with the signal input, can realize being connected with computer by USB interface.Being provided with simultaneously on the line control machine 2 increases sound volume button 21, and power switch button 22 reduces sound volume button 23 and mic mute button 24, and so not only compact conformation is easy to operate, and control is good, practicality.Being provided with power switch button 22 can temporaryly cut off the electricity supply and sound, does not need to extract input interface 1, and convenient the use reduced the plug number of times, prolongs the useful life of input interface 1 (being USB plug), also saves power supply effectively.

See shown in Fig. 1,2, after the USB plug of input interface 1 and computer USB interface connect, energized release knob 22, relay indicating light 25 meeting Chang Liang on the line control machine 2, when the circuit between computer and the earphone 3 had the signal transmission, relay indicating light 25 can be glittering.Input interface 1 is by the digital/analog signal change-over circuit in the USB plug access line control machine 2, convert the audio digital signals of computer USB interface transmission to the multichannel simulated audio signal, this audio signal includes preposition sound channel signal, rearmounted voice signal, center channel/supper bass sound channel signal.The voice signal of these passages is connected with 5.1 sound channel earphones 3 by lead, is sent on the loudspeaker and electromagnetic shaker of corresponding sound channel on the 5.1 sound channel earphones, finishes sound reproduction.Total volume of channel sound can and reduce sound volume button 23 by the increase sound volume button on the line control machine 2 21 and regulate, satisfying individual demand, and by power switch button 22 powered-down and sound immediately, easy to operate, and control is good.

The port number of above-mentioned earphone 3 output multi-sound-channel earphones, export by six passages that the corresponding software support can be set according to need, have respectively: preposition sound channel, rearmounted sound, center channel/supper bass sound channel are set at the left and right sound channels that has that is communicated to respectively in the earphone 3 left and right auricular conchas 31,32 when being set at each passage output.

Microphone 33 converts the voice signal of accepting to audio voltage signal on the earphone 3, pass analog/digital signal conversion circuit in the line control machine 2 back by lead, again by line control machine 2 by lead and USB plug, the digital signal of microphone 33 input is sent to computer handles.Mic mute button 24 on the line control machine 2 is the signal of mute microphone (MIC) 33 immediately, and microphone indicator light 26 can Chang Liang simultaneously.By corresponding software support, can do special processing to the sound that microphone receives on computers, the sound that can be transformed into man, woman, old man or child is sent earphone 3 again back to, and the sound that output was handled can be sent on the network by computer simultaneously.

See Fig. 3, this is the utility model one specific embodiment, wherein the USB plug CT1 of interface 1 by the 5V power supply of computer USB interface input from 1,4 pin take out, be connected to capacitor C 21 through power switch button 22, the electric source filter circuit that C22 composes in parallel, by C21, the electric capacity of two kinds of different medium materials of C22 composes in parallel electric source filter circuit the electromagnetism clutter is filtered out, + 5V power supply is delivered to 27 and 37 pin of integrated computer IC1 by inductance L 10,27 of this integrated computer IC1,37 pin are parallel with filter capacitor C9 equally, C10, C11, C12 is further to remove the clutter of line influence.4 pin of USB plug CT1 are received power ground and signal ground on line control machine 2 interior circuit boards respectively by inductance L 11, L12.The digital signal of 2,3 pin of USB plug is delivered to the corresponding digital signal pin of 8,19 pin of integrated computer IC1 respectively by resistance R 14, R15.Audio digital signals from the external input of USB plug CT1, after the D/A in the IC1 integrated circuit (D/A) conversion and power amplification, 35 pin by IC1 are exported preposition left channel signals, are coupled to the preposition L channel loudspeaker 311 in the left auricular concha 31 on the earphone 3 through capacitor C 30 inductance L 16.

36 pin by IC1 are exported preposition right-channel signals, are coupled to preposition R channel loudspeaker 321 in the auris dextra shell 32 on the earphone 3 through capacitor C 29 inductance L 5.

38 pin by IC1 are exported rearmounted left channel signals, are coupled to the rearmounted L channel loudspeaker 312 in the left auricular concha 31 on the earphone 3 through capacitor C 28 inductance L 4.

39 pin by IC1 are exported rearmounted right-channel signals, are coupled on the earphone 3 rearmounted R channel loudspeaker 322 in the auris dextra shell 32 through capacitor C 27 inductance L 3.

By 40 pin of IC1 output center channel signal, be coupled on the earphone 3 center channel loudspeaker 314,324 parallel with one another in the left and right auricular concha 31 through capacitor C 26 inductance L 2.

41 pin output supper bass sound channel signal by IC41 is coupled to the supper bass sound channel electromagnetic shaker 315,324 of connecting in the left and right auricular concha 31,32 in the left auricular concha 31 on the earphone 3 through computer C25 inductance L 1.

29 pin output by integrated computer IC1 supplies the bias voltage of microphone 33 work, through the microphone bias isolated from power filter capacitor of resistance R 9 and capacitor C 16 compositions, eliminates microphone 33 self-excitations and hum.The bias voltage of microphone 33 operate as normal is provided by microphone bias resistance R 10 inductance L 9 again.The sound that microphone 33 receives converts audio voltage signal to, behind C17 bypass filtering radio-frequency component, be coupled to 23,24 pin of integrated circuit (IC) 1 through capacitor C 14, C15, with microphone 33 left and right acoustic channels input amplifying circuits, analog/digital signal conversion circuit conversion in IC1 becomes digital signal again, sends computer back to by USB plug CT1 and handles through resistance R 14, R15 from 18,19 pin of IC1.

Being connected between 43 pin of integrated circuit (IC) and the power supply ground increases sound volume button 21, realizes increasing volume and regulates.

Be connected between 44 pin of integrated circuit (IC) 1 and the power supply ground and reduce sound volume button 23, realize reducing volume and regulate.

Be connected to mic mute button 24 between 46 pin of integrated circuit (IC) 1 and the power supply ground, realize the quiet control of microphone 33 in the earphone 3.

11,12 pin of integrated circuit (IC) 1 are

indicator light

25,26 current output terminals, by the light-emitting diode as

indicator light

25,26, make it luminous, as relay indicating light 25 or mic mute indicator light 26 through R12, R13 step-down current limliting.

What the used integrated circuit (IC) of present embodiment adopted is that specification is the integrated chip of CM106 (48 pins), and certainly, also can adopt specification is chip or other similar chip of CM106 (100 pins).

The single microphone that is provided with in the foregoing description on earphone is done the monophony, can also adopt two microphones to make stereo purposes.

The above only is the preferred embodiment of the utility model, does not therefore limit the protection range of the utility model, and the spirit equivalent modifications of doing and the variation of Fan Yiben creation all should be covered by in the application's claim.

Claims

1, the 5.1 sound channel earphones that have USB interface, it comprises input interface (1), line control machine (2) and 5.1 sound channel earphones (3), the three electrically connects, it is characterized in that: input interface (1) is a USB plug, line control machine is provided with numeral and analog signal conversion in (2), and line control machine (2) is provided with increases sound volume button (21), power switch button (22), reduce sound volume button (23) and mic mute button (24); Be respectively arranged with preposition left and right loudspeaker (311,321), rearmounted left and right loudspeaker (312,322), central left and right loudspeaker (314,324) and the left and right electromagnetic shaker of supper bass (315,325) in the left and right sides auricular concha of earphone (3) (31,32), and in left and right auricular concha (31,32) one is provided with microphone (33).

2,5.1 sound channel earphones with USB interface according to claim 1 is characterized in that: the indicator light (25,26) that also is provided with difference display working condition and microphone state on the line control machine (2).

3,5.1 sound channel earphones with USB interface according to claim 1, it is characterized in that: the power pin of the USB plug of input interface (1) is connected to the electric source filter circuit that capacitor C 21, C22 compose in parallel through power switch button (22), and being connected to power supply input pin in the integrated circuit (IC) 1 by inductance L 10, two power supply input pins of integrated circuit (IC) 1 are parallel with filter capacitor C9, C10, C11, C12 equally; Another pin of USB plug is received power ground and signal ground on line control machine (2) interior circuit board respectively by inductance L 11, L12; Digital signal pin in the USB plug inserts corresponding digital signal pin in the integrated circuit (IC) 1 by resistance R 14, R15; Loudspeaker or electromagnetic shaker that D/A (D/A) conversion in the integrated circuit (IC) 1 and power amplification circuit output pin are connected to each sound channel in the earphone (3) respectively.

4,5.1 sound channel earphones with USB interface according to claim 1 is characterized in that: microphone (33) is connected with bias voltage output pin in the integrated circuit (IC) 1 through resistance R 9, capacitor C 16, resistance R 10, inductance L 9; Capacitor C 17 is connected to USB plug through the audio frequency input pin that capacitor C 14, C15 are coupled to integrated circuit (IC) 1 by integrated circuit (IC) 1 digital signal output pin and through resistance R 14, R15.