CN201878313U - Sound with 5.1 sound field - Google Patents

Abstract

The utility model provides a sound with a 5.1 sound filed, comprising a receiving unit, a decoder, a sound mixing and signal processor, a loudspeaker, a wireless receiver and a wireless transmitter, wherein wireless connection is established between the wireless transmitter and the wireless receiver, and the wireless receiver is connected with the decoder. Signals from a wireless transmitting module are received through a wireless receiving module so that the multichannel surrounding technology is realized. Compared with a traditional multichannel sound, the utility model has the advantages that the connection mode is greatly simplified, the cost is greatly reduced, convenience in installation, use and the like i realized, and the sound with the 5.1 sound field is more suitable for a family flat-panel television and a three-dimensional (3D) television.

Description

A kind of sound equipment with 5.1 sound fields

Technical field

The utility model relates to the sound technique field, relates in particular to a kind of sound equipment with 5.1 sound fields.

Background technology

Along with improving constantly of people's living standard, people require more and more higher to stereo set or the panel TV Play System that has an acoustic function; Existing 5.1 sound channel surround sounds, as shown in Figure 1,5.1 in the surround sound, generally main amplifier is placed on the place ahead, considers the high-fidelity requirement of main sound box simultaneously, 3 groups of audio amplifiers (left, center, right) in main amplifier and the place ahead all pass through wired connection, surround speaker places the main amplifier back upper place, woofer adopts wired connection, its comparison difficulty that just seems of putting and connect up because volume is bigger.The multichannel surround sound have Fig. 1 as can be seen, though can be realized powerful surround sound as 5.1 surround sounds.But, its cost height, install loaded down with trivial detailsly, also there is certain drawback.

Summary of the invention

The purpose of this utility model is to provide a kind of sound equipment with 5.1 sound fields.

The utility model purpose is achieved through the following technical solutions.

A kind of sound equipment with 5.1 sound fields comprises: receiving element, decoder, audio mixing and signal processor and loud speaker; Also comprise wireless receiver and transmitting set, described transmitting set and wireless receiver are set up wireless connections, and described wireless receiver links to each other with described decoder.

Wherein, described transmitting set comprises: digit news receiver and digital signal format converter, described digital signal format converter is electrically connected with the digit news receiver.

Wherein, described wireless transmitter module also comprises the digital signal synthesis module, and described synthesis module is electrically connected the digital signal format converter.

Wherein, described transmitting set also comprises the signal modulation module, is electrically connected described synthesis module.

Wherein, described transmitting set also includes a transfer circuit, is electrically connected described signal modulation module.

Wherein, described wireless receiver comprises: receiving circuit and be electrically connected the signal demodulation module of this receiving circuit;

Separation module is electrically connected described signal demodulation module;

Numeral news deficiency formula transducer is electrically connected described separation module.

Wherein, described signal demodulation module comprises and separates spectrum spreading circuit and be electrically connected the demodulator circuit that this separates spectrum spreading circuit.

The utility model embodiment compared with prior art, beneficial effect is: the utility model provides a kind of sound equipment with 5.1 sound fields, receives signal from wireless transmitter module by wireless receiving module, realizes the multichannel loop technique.Compare with existing multichannel audio, simplify greatly on connected mode, the cost, brought the facility of aspects such as installing and using, be more suitable in the speaker effect of family's panel TV and 3D TV.

Description of drawings

Fig. 1 is existing 5.1 surround sound connection diagrams;

Fig. 2 is the sound equipment theory diagram of 5.1 sound fields of the present utility model;

Fig. 3 is the acoustics circuit figure of 5.1 sound fields of the present utility model;

Fig. 4 is the functional block diagram of transmitting set of the present utility model;

Fig. 5 is the functional block diagram of wireless receiver of the present utility model.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Please refer to Fig. 2 and comprise a receiving element 12, one decoder 14, one digital analog converters, 16, one audio mixings and signal processor 18, one amplifier 22 and a loud speaker 24 for the sound equipment 10 of 5.1 sound fields of the present utility model.Receiving element 12 is used for receiving and demodulation meets the wireless signal of SPDIF, or includes the wireless signal of multichannel signal information, and therefore, decoder 14 is untied the signal separation of each sound channel, and reaches digital analog converter 16.Each sound channel signal after untiing then carries out audio mixing and signal to be handled, be to carry out in the embodiment of Fig. 2 with analog form, so digital analog converter 16 changes into analog signal to the digital signal after the decoding earlier, reaches the mixed processing that audio mixing and signal processor 18 are carried out sound channel afterwards.Sound signal after the processing via amplifier 22 to drive loud speaker 24,24 sound signal sounding of loud speaker according to amplifier 22 outputs.

Please refer to Fig. 3 and (for example: DVD) dial the machine of putting 42 for the sound equipment 1 00 of the utility model 5.1 sound fields comprises a multichannel source of sound, one transmitting set, 50, one wireless receiver, 80, one decoder 14, one audio mixing and signal processing module 34, one amplifiers 22 and a loud speaker 24.The function of decoder 14, audio mixing and signal processing module 34, amplifier 22 and loud speaker 24 and operation principles and described before similar.Because the transmitted data amount of all sizes such as AC3 or DTS has certain restriction, and, also there is regulation the signal delay time that AC3 reduces between each sound channel, so the incorrect transmission of transceiver can't realize real-time sound playing, also can't realize the effect of Doby multichannel.Transmitting set 50 of the present utility model and wireless receiver 80 must have the characteristic and the performance of low signal time delay (less than 2ms) and high transmission rates (2000kb/s), and energy real-time tranception, modulation and demodulation meet the wireless signal of SPDIF interface.Dial the machine of putting 42 when the multichannel source of sound and meet the signal of SPDIF via wiring transmission one to after the transmitting set 50, transmitting set 50 changes with wireless signal to be sent in the air, and reach decoder 14 behind the sound signal that meets SPDIF that wireless receiver 80 receives synchronously and demodulation transmitting set 50 sends, and the operation of the processing after carrying out.

About the detailed installation drawing of transmitting set 50, please refer to Fig. 4.Fig. 4 is the functional block diagram of transmitting set 50.Device 52, the one signal modulation modules 68 and a radio frequency transfer circuit 70 that can provide voice and data multitask to transmit is provided transmitting set 50.Device 52 has comprised a SPDIF receiver 54, for example optical fiber (optical fiber) joint or coaxial cable (coaxial) joint, a digital signal format converter 58 and a synthesis module 60.Device 52 can receive the multichannel audio input signal of variant pattern, for example AC3 or DTS or the like.And digital signal format converter 58 is electrically connected in SPDIF receiver 54, be used for converting the digital voice signal that SPDIF receiver 54 is exported to a pulse speech sound signal (PCM), at last, synthesis module 60 is electrically connected in after the digital signal format converter 58, and the controlling signal and the pulse speech sound signal that are used for receiving synthesize a digital signal with bit stream (bit stream) form.Signal modulation module 68 is electrically connected in synthesis module 60, the digital signal modulation that is used for having the bit stream form produces fundamental frequency (Ba seband) signal of a correspondence, in fact, signal modulation module 68 can be a modulation circuit 67 and a spectrum spreading circuit 69 (SpreadingCircui t) according to function distinguishing, modulation circuit 67 can be Ji/4 DQPSK (Differential Quadrature PhaseShift Keying) modulation circuits, be mainly used to modulation treatment is made in the numeral number of mocking with bit stream form of synthesis module 60 outputs, lose to produce modulation news, and spectrum spreading circuit 69 is electrically connected in modulation circuit 67, spectrum spreading circuit 69 can carry out convolution (convolution andmultiplication) computing with a modulating signal and a spreading code, just each position in the modulating signal is replaced with a plurality of positions in addition in the equivalence, to produce this baseband signal.Baseband signal is converted into the radio-frequency (RF) signal of high frequency by radio frequency transfer circuit 70 and is sent in the air in wireless mode.

About the detailed installation drawing of wireless receiver 80, please refer to Fig. 5.Fig. 5 is the functional block diagram of wireless receiver 80.Device 82, one radio-frequency (RF) receiving circuit 92 and a signal demodulation module 94 that can provide voice and data multitask to transmit is provided wireless receiver 80.Device 82 comprises a separation module 84, a digital signal format converter 88.Separation module 84 is that the digital signal with bit stream form that is used for receiving is separated into a controlling signal and a pulse speech sound signal, and the digital signal format converter 88 that is electrically connected in separation module 84 afterwards can convert the pulse speech sound signal to one digital voice signal.The digital voice signal that device 82 of the present utility model is exported can be the multichannel speech sound signal of various types, for example SPDIF form or I2S form, and the controlling signal that has may command speech sound signal specificity information.Radio-frequency (RF) receiving circuit 92 can receive a radio-frequency (RF) signal and produce the baseband signal of a correspondence in air, and signal demodulation module 94 is electrically connected in radio-frequency (RF) receiving circuit 92, basically be the inverse operation of carrying out signal modulation module 68, being used for the demodulation baseband signal becomes the digital signal with bit stream form in Fig. 4 transmitter.Signal demodulation module 94 comprises separates spread spectrum (De-spreading) circuit 93 and a demodulator circuit 95, after separating spectrum spreading circuit 93 baseband signal and a spreading code being produced convolution relation, the conversion baseband signal becomes separates the spread spectrum signal, and demodulator circuit 95 is to carry out demodulation operation in the mode of towering/4 DQPSK, carries out the operation of signal demodulation has the bit stream form with generation digital signal in order to separate the spread spectrum signal.At last, receiver 80 signal that will meet the SPDIF interface reaches the decoder 14 of Fig. 3.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims (7)

1. the sound equipment with 5.1 sound fields comprises: receiving element, decoder, audio mixing and signal processor and loud speaker; It is characterized in that also comprise wireless receiver and transmitting set, described transmitting set and wireless receiver are set up wireless connections, described wireless receiver links to each other with described decoder.

2. the sound equipment with 5.1 sound fields as claimed in claim 1 is characterized in that, described transmitting set comprises: digit news receiver and digital signal format converter, described digital signal format converter is electrically connected with the digit news receiver.

3. the sound equipment with 5.1 sound fields as claimed in claim 2 is characterized in that described wireless transmitter module also comprises the digital signal synthesis module, and described synthesis module is electrically connected the digital signal format converter.

4. the sound equipment with 5.1 sound fields as claimed in claim 3 is characterized in that described transmitting set also comprises the signal modulation module, is electrically connected described synthesis module.

5. the sound equipment with 5.1 sound fields as claimed in claim 4 is characterized in that described transmitting set also includes a transfer circuit, is electrically connected described signal modulation module.

6. the sound equipment with 5.1 sound fields as claimed in claim 1 is characterized in that, described wireless receiver comprises: receiving circuit and be electrically connected the signal demodulation module of this receiving circuit;

Separation module is electrically connected described signal demodulation module;

Numeral news deficiency formula transducer is electrically connected described separation module.

7. the sound equipment with 5.1 sound fields as claimed in claim 6 is characterized in that, described signal demodulation module comprises to be separated spectrum spreading circuit and be electrically connected the demodulator circuit that this separates spectrum spreading circuit.

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