CN2691198Y

CN2691198Y - Digital sund plager with vibrative function

Info

Publication number: CN2691198Y
Application number: CN 200420044233
Authority: CN
Inventors: 罗惠玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-01
Filing date: 2004-04-01
Publication date: 2005-04-06
Anticipated expiration: 2014-04-01

Abstract

The utility model relates to a digital sound player, which provides a digital sound player with vibration function, comprising a speaker, a vibration unit and a signal input interface circuit. The speaker is used for playing sound, the vibration unit is used for responding to the strength of the sound, and the signal input interface circuit is used for inputting sound frequency signals. The signal input interface circuit is a USB interface whose power supply signal pin provides power supply for the digital sound player; the speaker and the vibration unit respectively respond to the sound frequency digital signals of the data signal pin of the USB interface. Without using aneroid batteries, the utility model has small volume and light weight, and thus it is environment protective, and it can restore 3D sound effect and virtual circulating 5.1 sound channel.

Description

A kind of digital sound play device with vibrating function

[technical field]

The utility model relates to a kind of digital sound play device, relates in particular to a kind of digital sound play device with vibrating function, is widely used in long-distance education on on-line speech transmission, recreation and the line.

[background technology]

Along with the raising of people's living standard, various digital sound play devices (comprising sound equipment, earphone etc.) are extensive use of by people.In order to reproduce acoustics more realistically, on digital sound play device, designed vibration unit, the power of vibration unit response voice signal has been changed, and vibrate along with the power of sound, people's vision or sensation and the sense of hearing are combined, experience truer.Present existing vibration earphone adopts more:

1. earphone portion: 1 audio signal wire directly connects earphone horn, another termination Φ 3.5 headset plugs.And by 2 joint dry cell power supplies, an additional then power amplifier drives vibrator.

2. microphone part: connect microphone and Φ 3.5 plugs by a single-core line.

Fig. 1 promptly is a typical vibration headset circuit diagram, and this figure is widely used in domestic and international vibration earphone product.Be divided into two-way from the audio signal of PC or stereo set output, one the tunnel directly enters earphone horn EAR-R1 and EAR-L1, another road is through Q1, R15, C18, the R21 amplification that gains, then through R23, C17 low-pass filtering, at last by power amplification circuit U1 power amplification, promote vibrator B1, B2 vibration, the required power supply of circuit is by two joint dry cell power supplies.There is shortcoming in such circuit:

A. owing to adopt dry cell power supply, volume is increased, weight is big, the outward appearance heaviness;

B. failure rate height.Existing vibrations earphone all is matching test ear microphone (promptly analog), and the matching test ear microphone needs 2 analogy joints (input of earphone output/microphone), if malunion is true, causes the earphone fault easily;

C. owing to adopt the dry cell power supply mode, continuous operation 1-2 hour, must change dry cell, not environmental protection.

[summary of the invention]

The purpose of this utility model is exactly that the digital sound play device volume that exists in the prior art is big in order to solve, Heavy Weight and use the problem of not environmental protection of dry cell, a kind of digital sound play device with vibrating function is provided, make digital sound play device break away from dry cell, volume small volume and less weight.

For achieving the above object, the utility model proposes a kind of digital sound play device with vibrating function, comprise the loudspeaker that are used to play sound, the signal input interface circuit that is used to respond the vibration unit of sound intensity and is used for input audio signal, described signal input interface circuit is a USB interface, the power supply signal pin of described USB interface provides power supply for digital sound play device, and described loudspeaker and vibration unit respond the audio digital signals of the data-signal pin of described USB interface respectively.

Comprise that also the voltage transitions that is used for the input of the power supply signal pin of USB interface is the voltage conversion circuit of digital sound play device required voltage, described voltage conversion circuit is connected between other functional module of the power supply signal pin of USB interface and digital sound play device.

Also comprise the audio digital signals processing unit that links to each other with the data-signal pin of USB interface, also comprise the audio digital signals processing unit that links to each other with the data-signal pin of USB interface, described loudspeaker and vibration unit respond the audio signal of output after the digital-to-analogue conversion of described audio digital signals processing unit, gain respectively.Described audio digital signals processing unit comprises that USB interface, ISO that order links to each other export processing unit, D/A converting circuit and gain circuitry, the audio digital signals of the data-signal pin output of the input response USB interface at described USB interface, described loudspeaker and vibration unit respond the audio signal of described gain circuitry output respectively.

So the beneficial effects of the utility model are: 1) owing to broken away from dry cell, smaller volume, weight saving.2) the utility model inserts power supply by USB interface from PC or sound equipment, for this number sound play device provides power supply, compares relatively environmental protection with using dry cell.3) almost there is not noise to disturb.Because adopt the universal serial port bus recording and reset, outside ADC (analog-to-digital conversion) or DSP (Digital Signal Processing) are easy to be increased in the USB audio frequency apparatus, have avoided the noise of analog signal to disturb.4) failure rate reduces.The user only need be inserted into the USB terminal on the USB interface and get final product, and does not need to recognize which should insert the earphone lead-out terminal, and which should plug in the microphone input terminal, has avoided wrong and the fault that causes.

Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.

[description of drawings]

Fig. 1 represents the circuit diagram of the earphone with vibrating function of prior art;

Fig. 2 represents functional-block diagram of the present utility model;

Fig. 3 represents the circuit diagram of a kind of embodiment of the present utility model.

[embodiment]

As shown in Figure 2, the utility model utilizes the 5V power supply of USB, and the power supply signal pin of USB connects+5V, and provides power supply through each functional module for digital sound play device after the voltage transitions.Two data-signal pin input audio digital signals of USB, through the vibration unit that exports the loudspeaker that are used to play sound after the audio digital signals processing unit processes respectively to and be used for vibrating according to sound intensity, described audio digital signals processing unit comprises the USB interface that order links to each other, ISO exports processing unit, first, two D/A converting circuits and first, two gain circuitries, the audio digital signals of the data-signal pin output of the input response USB interface at described USB interface, described loudspeaker and vibration unit respond the audio signal of described gain circuitry output respectively.Its principle is: data flow enters the USB interface and adjusts through 16 figure place moulds, gain, divide two-way with signal then, one the tunnel enters earphone, another road enters the ergonomics vibrator through power amplification again through low pass filter, realizes that the ergonomics vibrator is along with frequency, the amplitude of music vary in size and vibrate.The utility model can also comprise microphone, and described microphone links to each other with the audio digital signals processing unit, microphone signal through characteristics unit, selected cell, USB interface, mixed cell, characteristics unit again through the loudspeaker signal of resetting out.

Digital sound play device of the present utility model can be an earphone, also can be the sound equipment that has power amplifier.

Be illustrated in figure 3 as first embodiment of the present utility model, described digital sound play device is an earphone, described audio digital signals processing unit and voltage conversion unit are integrated in the integrated circuit, and as USB5.1 processing integrated circuit U1 as shown in Figure 3, its model is CM108.Provide in the described circuit+the 5V direct voltage is to voltage input pin the 35th pin of USB5.1 processing integrated circuit U1; USB interface JP2 the 1st pin+5V and the 4th pin enter the builtin voltage adjuster, 5V voltage is adjusted into 3.3V, is output as each element circuit by the voltage output pin required voltage is provided; Crystal Y2 and capacitor C 12, C13 form oscillating circuit, and 12MHZ is provided time-base oscillation, and wherein one the tunnel through clock generator, and another road 4 frequencys multiplication change into the 48MHZ frequency and required time-base oscillation signal are provided for the USB interface among the USB5.1 processing integrated circuit U1; Through the audio digital signals after the USB interface processing after 16 D/A converting circuit of USB5.1 processing integrated circuit U1 the inside is handled, again through gain circuitry carry out 0～-the 45dB adjustment that gain, promote earphone horn SPR/SPL at last and work; Get audio signal respectively through the 13 resistance R 13 series connection the 15 resistance R 15 from loudspeaker SPR/SPL, the partial pressure type sampled audio signal that the 20 resistance R 20 series connection the 15 resistance R 15 is formed, through the first triode Q1 and the 17 resistance R 17, the base circuit that the 16 capacitor C 16 is formed, emitter resistance the 21 resistance R 21 common operational amplifiers of forming, the audio signal gain is amplified, through the 19 capacitor C 19 every straight coupling, through the 23 resistance R 23, the low pass filter filtering that the 17 capacitor C 17 is formed, after power amplifier U3 amplifies low frequency signal, two vibrator X1 about promotion, X2 work makes it vibrate accordingly with different work of audio signal.The voltage after voltage transitions of the output of the voltage output pin of the 2nd pin connection USB5.1 processing integrated circuit U1 of connector JP6, the 2nd pin of connector JP6 and the 3rd pin short circuit, the 3rd pin of connector JP6 is for providing bias voltage as the collector electrode of the first triode Q1 of operational amplifier chief component, the 8th pin of power amplifier U3.Microphone MIC is by being connected to USB5.1 processing integrated circuit U1 the 27th pin (U1.27) every straight coupling capacitance C11, USB5.1 processing integrated circuit U1 the 25th pin produces direct current 4.5V voltage through the tenth resistance R 10 dividing potential drop current limlitings, provide electret microphone required operating voltage, the voice signal that microphone MIC picks up exports PC or other sound equipment to by USB interface after USB5.1 processing integrated circuit U1 handles.

Second embodiment of the present utility model compares with first embodiment and different is, the audio signal that inputs to loudspeaker from gain circuitry is earlier through power amplifier, and then exports loudspeaker to, plays sound.

Because the utility model improves on analog vibration Headphone structure in the past, adopt USB interface to provide power supply for digital sound play device, thoroughly solved the analog vibration device with battery for, heavy, not environmental protection, noise disturbs big, shortcomings such as complicated operation.And owing to adopt USB interface,, therefore can connect the sound channel earphone, reach vibrator, form USB5.1 numeral vibration earphone, reducible 3D audio in one or more sound channel sampled signals so can support the optical fiber and digital signal as data transmission channel.

Claims

1. digital sound play device with vibrating function, comprise the loudspeaker that are used to play sound, the signal input interface circuit that is used to respond the vibration unit of sound intensity and is used for input audio signal, it is characterized in that: described signal input interface circuit is a USB interface, the power supply signal pin of described USB interface provides power supply for digital sound play device, and described loudspeaker and vibration unit respond the audio digital signals of the data-signal pin of described USB interface respectively.

2. the digital sound play device with vibrating function as claimed in claim 1, it is characterized in that: comprise that also the voltage transitions that is used for the input of the power supply signal pin of USB interface is the voltage conversion circuit of digital sound play device required voltage, described voltage conversion circuit is connected between other functional module of the power supply signal pin of USB interface and digital sound play device.

3. the digital sound play device with vibrating function as claimed in claim 1 or 2, it is characterized in that: also comprise the audio digital signals processing unit that links to each other with the data-signal pin of USB interface, described loudspeaker and vibration unit respond the audio signal of output after the digital-to-analogue conversion of described audio digital signals processing unit, gain are amplified respectively.

4. the digital sound play device with vibrating function as claimed in claim 3, it is characterized in that: described vibration unit comprises operational amplifier, low pass filter, power amplifier and the vibrator that order links to each other, and the input of described operational amplifier links to each other with the output of gain circuitry.

5. the digital sound play device with vibrating function as claimed in claim 3 is characterized in that: described loudspeaker are earphone horn, and the input of described loudspeaker links to each other with the output of gain circuitry.

6. the digital sound play device with vibrating function as claimed in claim 3 is characterized in that: described loudspeaker link to each other with the output of gain circuitry by power amplifier.

7. the digital sound play device with vibrating function as claimed in claim 3 is characterized in that: also comprise microphone, described microphone links to each other with the audio digital signals processing unit, and voice signal is exported after the audio digital signals processing unit processes.