CN207427444U - A kind of signal DSP processing modules of mobile pull rod speaker - Google Patents
A kind of signal DSP processing modules of mobile pull rod speaker Download PDFInfo
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- CN207427444U CN207427444U CN201721259497.4U CN201721259497U CN207427444U CN 207427444 U CN207427444 U CN 207427444U CN 201721259497 U CN201721259497 U CN 201721259497U CN 207427444 U CN207427444 U CN 207427444U
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Abstract
The utility model discloses a kind of signal DSP processing modules of mobile pull rod speaker, including chip U3, chip U5, chip U6, chip U7, microphone CN1, microphone CN2, microphone CN3, operational amplifier U4A, operational amplifier U4B, socket JK3 and oscillator Y1.The utility model has powerful compatibility, voice data processing speed is fast, voice data processing accuracy is high, using microcontroller as control core, energy consumption that can not only be internal reduces, the stationarity of output voltage can be controlled, ensures the stability and reliability of signal output, so that the tonequality in sound system is more preferably.
Description
Technical field
The utility model is related to DSP technical fields, particularly a kind of signal DSP processing modules of mobile pull rod speaker.
Background technology
For sound system, the quality of sound effect processing directly affects sound for the application of dsp chip in the acoustic system
As the quality of product.The voice datas such as TUNER, CD, MD, TAPE, MP3 source is primarily present in the acoustic system, and dsp chip can
To carry out data conversion treatment to simulation or digital tone source, change the output effect of sound, meet the needs of user.DPS its
Real is exactly a kind of microprocessor of uniqueness, is the device that bulk information is handled with digital signal.DPS can utilize volume debugging,
Frequency dividing debugging is delayed the dsp functions such as debugging and the balanced debugging of eq to carry out post-processing, can preferably improve intelligent sound box
Tonequality.
Utility model content
In order to overcome the disadvantages mentioned above of the prior art, the purpose of this utility model is to provide a kind of novel and reasonable structure, company
Connect that stability is strong, voice data processing speed is fast, voice data processing accuracy is high, so that the tonequality in sound system is more preferably
The signal DSP processing modules of mobile pull rod speaker.
Technical solution is used by the utility model solves its technical problem：
A kind of signal DSP processing modules of mobile pull rod speaker, including chip U3, chip U5, chip U6, chip U7, words
Cylinder CN1, microphone CN2, microphone CN3, operational amplifier U4A, operational amplifier U4B, socket JK3 and oscillator Y1.Wherein,
1 foot of the chip U3 connects+3.3V power supplys and is grounded by capacitance C41, the 32 feet connection chip of the chip U3
1 foot of U3,2 feet of the chip U3 connect 24 feet of the chip U7,1 foot of chip U6,11 feet of chip U5 respectively, described
The 3 feet ground connection of chip U3,6 feet of the chip U3 are described by resistance R126,4 feet of the capacitance C132 connections microphone CN3
7 feet of chip U3 are grounded by capacitance C42, and 8 feet of the chip U3 connect+3.3V power supplys and are grounded by capacitance C43, the core
The 9 feet ground connection of piece U3,14 feet of the chip U3 pass through resistance R127,4 feet and capacitance of the capacitance C133 connections microphone CN3
Node between C132,15 feet of the chip U3 pass through capacitance C48, resistance R52, the resistance R56 connections operational amplifier
The inverting input of U4B, 16 feet of the chip U3 pass through capacitance C47, resistance R53, the resistance R57 connections operational amplifier
The in-phase input end of U4B, 17 feet of the chip U3 pass through capacitance C53, resistance R59, the resistance R63 connections operational amplifier
The in-phase input end of U4A, 18 feet of the chip U3 pass through capacitance C52, resistance R58, the resistance R62 connections operational amplifier
The inverting input of U4A, 21 feet of the chip U3 are grounded by resistance R51, capacitance C46, the 22 feet ground connection of the chip U3,
23 feet of the chip U3 connect+3.3V power supplys and are grounded by capacitance C44, and 24 feet of the chip U3 are grounded by capacitance C45,
The 25 feet ground connection of the chip U3,26 feet of the chip U3 pass through 27 feet of the resistance R50 connections chip U7, the chip
27 feet of U3 connect 9 feet of the chip U5, and 28 feet of the chip U3 connect 2 feet of the chip U6, the 7 of chip U7 respectively
12 feet of foot, chip U5,29 feet of the chip U3 connect 4 feet of the chip U6,6 feet of chip U7, chip U5 respectively
10 feet, the 30 feet ground connection of the chip U3,31 feet of the chip U3 connect 29 feet of the chip U7, the chip U3 respectively
32 feet connect respectively 1 foot of the chip U6,24 feet of chip U7, chip U5 11 feet and by resistance R65 connect -3.3V electricity
Source.
As further improvement of the utility model：1 foot of the chip U7 connects+3.3V power supplys by resistance R75, described
3 feet of chip U7 connect+3.3V power supplys and are grounded by capacitance C67,2 feet, 3 feet of connection of the chip U7, and the 6 of the chip U7
8 feet of 7 feet connection the resistance R69, the chip U7 of foot connection resistance R68, the chip U7,15 feet, 30 feet ground connection, the core
9 feet of piece U7 are grounded by capacitance C68, and 10 feet of the chip U7 are grounded by capacitance C69, and 11 feet of the chip U7 connect+
It 3.3V power supplys and is grounded by capacitance C70,13 feet of the chip U7 connect+3.3V power supplys, and 16 feet of the chip U7 meet+3.3V
Power supply and be grounded by capacitance C71,25 feet of the chip U7 are grounded by capacitance C74,10 feet of the chip U7,12 feet,
17 feet connect the node between 25 feet of the chip U7 and capacitance C74,26 feet, 23 feet, 19 feet point of the chip U7 respectively
16 feet of the chip U7 are not connected, are shaken described in the 21 feet connection of 24 feet connection the resistance R71, the chip U7 of the chip U7
Swing 3 ends of device Y1 and by 4 ends of the capacitance C72 connections oscillator Y1,22 feet of the chip U7 connect the vibration
1 end of device Y1 and by 4 ends of the capacitance C73 connections oscillator Y1,1 end of the oscillator Y1 is connected by resistance R70
Connect 3 ends of the oscillator Y1,2 ends of the oscillator Y1 and 4 ends ground connection.
As further improvement of the utility model：Section between one end connection resistance R52 and resistance R56 of capacitance C49
Point and the other end, which connect the node between resistance R53 and resistance R57 and pass through resistance R55, connects+4.5V power supplys, the operation amplifier
The in-phase input end of device U4B is grounded by capacitance C51, and the inverting input of the operational amplifier U4B is connected by capacitance C50
The output terminal of the operational amplifier U4B, the output terminal of the operational amplifier U4B pass through capacitance C59, resistance R79 connections institute
State 2 ends of socket JK3 and by resistance R54, resistance R64, the capacitance C63 connections chip U6 10 feet, capacitance C59 and resistance
Node between R79 is grounded by resistance R77, and resistance R77 one end is connected respectively by resistance R148, the other end by resistance R149
Capacitance C37 is met, the node connection resistance R97 and capacitance C154 between capacitance C59 and resistance R54.
As further improvement of the utility model：Section between one end connection resistance R58 and resistance R62 of capacitance C54
Point, the other end connect the node between resistance R59 and resistance R63, and the in-phase input end of the operational amplifier U4A passes through capacitance
C56 is grounded, and resistance R61 is in parallel with resistance R63, and the inverting input of the operational amplifier U4A passes through described in capacitance C55 connections
The output terminal of operational amplifier U4A, the output terminal of the operational amplifier U4A are described slotting by capacitance C58, resistance R78 connections
3 ends of seat JK3 and by resistance R60, resistance R65, the capacitance C64 connections chip U6 11 feet, capacitance C58 and resistance R78
Between node be grounded and be grounded by resistance R129, capacitance C36, resistance R82, capacitance C58 and resistance R60 by resistance R76
Between node pass through the node between resistance R80 connection resistance R97 and capacitance C154, the socket JK3 1 end ground connection, institute
It states the positive supply termination+9V power supplys of operational amplifier U4A and is grounded by capacitance C57, the negative electricity of the operational amplifier U4A
Source is grounded.
As further improvement of the utility model：3 feet of the chip U6 pass through the resistance R72 connections chip U7's
24 feet, 5 feet of the chip U6 connect 13 feet of 9 feet of the chip U7, chip U5,8 feet, 9 feet of the chip U6 respectively
It is grounded with 13 feet, 12 feet of the chip U6 are grounded by capacitance C55, the capacitance C66 that 15 feet of the chip U6 pass through series connection
And capacitance C121, capacitance C122 ground connection in parallel, 14 feet of the chip U6 and 16 feet connect 15 feet of the chip U6 with
Node between capacitance C66, the node between capacitance C121 and capacitance C122 connect+3.3V power supplys and connect by resistance R118+
3.4V power supply.
As further improvement of the utility model：3 feet, 5 feet, 8 feet, 14 feet, 15 feet and 16 feet of the chip U5 connect
Ground, 4 feet of the chip U5 are grounded by capacitance C60, and 6 feet of the chip U5 connect+5V power supplys, and 7 feet of the chip U5 connect-
It 3.3V power supplys and is grounded by capacitance C62.
As further improvement of the utility model：The 3 feet connection resistance R128 of the microphone CN3, the microphone CN3's
2 feet connect+9V power supplys by inductance L4, and 1 foot of the microphone CN3 is grounded and passes through 2 feet of the capacitance C131 connections microphone CN3
With the node between inductance L4.
Compared with prior art, the beneficial effects of the utility model are：
The utility model has powerful compatibility, and voice data processing speed is fast, and voice data processing accuracy is high, uses
Microcontroller is reduced as control core, energy consumption that can not only be internal, can be controlled the stationarity of output voltage, be ensured signal output
Stability and reliability so that the tonequality in sound system is more preferably.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model.
Fig. 2 is the circuit diagram of the A of the utility model.
Fig. 3 is the circuit diagram of the B of the utility model.
Specific embodiment
The utility model is further illustrated with embodiment in conjunction with description of the drawings：
As shown in Figure 1, Figure 2 and Figure 3, a kind of signal DSP processing modules of mobile pull rod speaker, including chip U3, chip
U5, chip U6, chip U7, microphone CN1, microphone CN2, microphone CN3, operational amplifier U4B, operational amplifier U4B, socket JK3
With oscillator Y1.Wherein,
1 foot of the chip U3 connects+3.3V power supplys and is grounded by capacitance C41, the 32 feet connection chip of the chip U3
1 foot of U3,2 feet of the chip U3 connect 24 feet of the chip U7,1 foot of chip U6,11 feet of chip U5 respectively, described
The 3 feet ground connection of chip U3,6 feet of the chip U3 are described by resistance R126,4 feet of the capacitance C132 connections microphone CN3
7 feet of chip U3 are grounded by capacitance C42, and 8 feet of the chip U3 connect+3.3V power supplys and are grounded by capacitance C43, the core
The 9 feet ground connection of piece U3,14 feet of the chip U3 pass through resistance R127,4 feet and capacitance of the capacitance C133 connections microphone CN3
Node between C132,15 feet of the chip U3 pass through capacitance C48, resistance R52, the resistance R56 connections operational amplifier
The inverting input of U4B, 16 feet of the chip U3 pass through capacitance C47, resistance R53, the resistance R57 connections operational amplifier
The in-phase input end of U4B, 17 feet of the chip U3 pass through capacitance C53, resistance R59, the resistance R63 connections operational amplifier
The in-phase input end of U4A, 18 feet of the chip U3 pass through capacitance C52, resistance R58, the resistance R62 connections operational amplifier
The inverting input of U4A, 21 feet of the chip U3 are grounded by resistance R51, capacitance C46, the 22 feet ground connection of the chip U3,
23 feet of the chip U3 connect+3.3V power supplys and are grounded by capacitance C44, and 24 feet of the chip U3 are grounded by capacitance C45,
The 25 feet ground connection of the chip U3,26 feet of the chip U3 pass through 27 feet of the resistance R50 connections chip U7, the chip
27 feet of U3 connect 9 feet of the chip U5, and 28 feet of the chip U3 connect 2 feet of the chip U6, the 7 of chip U7 respectively
12 feet of foot, chip U5,29 feet of the chip U3 connect 4 feet of the chip U6,6 feet of chip U7, chip U5 respectively
10 feet, the 30 feet ground connection of the chip U3,31 feet of the chip U3 connect 29 feet of the chip U7, the chip U3 respectively
32 feet connect respectively 1 foot of the chip U6,24 feet of chip U7, chip U5 11 feet and by resistance R65 connect -3.3V electricity
Source.
1 foot of the chip U7 connects+3.3V power supplys by resistance R75, and 3 feet of the chip U7 connect+3.3V power supplys and lead to
Cross capacitance C67 ground connection, 2 feet of the chip U7 connect 3 feet, the 6 feet connection resistance R68 of the chip U7, and the 7 of the chip U7
8 feet of foot connection resistance R69, the chip U7,15 feet, 30 feet ground connection, 9 feet of the chip U7 are grounded by capacitance C68, institute
10 feet for stating chip U7 are grounded by capacitance C69, and 11 feet of the chip U7 connect+3.3V power supplys and are grounded by capacitance C70, institute
13 feet for stating chip U7 connect+3.3V power supplys, and 16 feet of the chip U7 connect+3.3V power supplys and are grounded by capacitance C71, the core
25 feet of piece U7 are grounded by capacitance C74, and 10 feet, 12 feet, 17 feet of the chip U7 connect 25 feet of the chip U7 respectively
With the node between capacitance C74,26 feet, 23 feet, 19 feet of the chip U7 connect 16 feet of the chip U7, the core respectively
21 feet of 24 feet connection the resistance R71, the chip U7 of piece U7 connect 3 ends of the oscillator Y1 and are connected by capacitance C72
4 ends of the oscillator Y1,22 feet of the chip U7 connect 1 end of the oscillator Y1 and pass through capacitance C73 connections institute
4 ends of oscillator Y1 are stated, 1 end of the oscillator Y1 passes through 3 ends of the resistance R70 connections oscillator Y1, the vibration
2 ends of device Y1 and 4 ends ground connection.
Node and other end connection resistance R53 and resistance between one end connection resistance R52 and resistance R56 of capacitance C49
Node between R57 simultaneously passes through resistance R55 and connects+4.5V power supplys, and the in-phase input end of the operational amplifier U4B passes through capacitance
C51 is grounded, the output that the inverting input of the operational amplifier U4B passes through the capacitance C50 connections operational amplifier U4B
End, the output terminal of the operational amplifier U4B by capacitance C59, the resistance R79 connections socket JK3 2 ends and pass through resistance
R54, resistance R64,10 feet of the capacitance C63 connections chip U6, the node between capacitance C59 and resistance R79 pass through resistance R77
Ground connection, resistance R77 one end connects capacitance C37, capacitance C59 and resistance respectively by resistance R148, the other end by resistance R149
Node connection resistance R97 and capacitance C154 between R54.
Node between one end connection resistance R58 and resistance R62 of capacitance C54, other end connection resistance R59 and resistance
Node between R63, the in-phase input end of the operational amplifier U4A are grounded by capacitance C56, and resistance R61 and resistance R63 is simultaneously
Connection, the inverting input of the operational amplifier U4A are described by the output terminal of the capacitance C55 connections operational amplifier U4A
The output terminal of operational amplifier U4A by capacitance C58, the resistance R78 connections socket JK3 3 ends and pass through resistance R60, electricity
Hinder R65,11 feet of the capacitance C64 connections chip U6, the node between capacitance C58 and resistance R78 be grounded by resistance R76 and
By resistance R129, capacitance C36, resistance R82 ground connection, the node between capacitance C58 and resistance R60 passes through resistance R80 connections electricity
Hinder R97 and capacitance C154 between node, the socket JK3 1 end ground connection, the operational amplifier U4A positive supply termination+
It 9V power supplys and is grounded by capacitance C57, the negative power end ground connection of the operational amplifier U4A.
3 feet of the chip U6 are connected respectively by 24 feet of the resistance R72 connections chip U7,5 feet of the chip U6
Connect 9 feet, 13 feet of chip U5 of the chip U7,8 feet, 9 feet and the 13 feet ground connection of the chip U6,12 feet of the chip U6
It is grounded by capacitance C55,15 feet of the chip U6 pass through the capacitance C66 of series connection and capacitance C121, the capacitance C122 of parallel connection
Ground connection, 14 feet of the chip U6 and 16 feet connect the node between 15 feet of the chip U6 and capacitance C66, capacitance C121 with
Node between capacitance C122 connects+3.3V power supplys and connects+3.4V power supplys by resistance R118.
3 feet, 5 feet, 8 feet, 14 feet, 15 feet and 16 feet of the chip U5 are grounded, and 4 feet of the chip U5 pass through capacitance
C60 is grounded, and 6 feet of the chip U5 connect+5V power supplys, and 7 feet of the chip U5 connect -3.3V power supplys and are grounded by capacitance C62.
2 feet of 3 feet connection the resistance R128, the microphone CN3 of the microphone CN3 connect+9V power supplys by inductance L4, described
1 foot of microphone CN3 is grounded and passes through the node between 2 feet of the capacitance C131 connections microphone CN3 and inductance L4.
Volume adjustment, musical instrument effect, karaoke delayed reverberation, the voice that disappears, EQ, ADC analog-to-digital conversion, DAC digital-to-analogue conversions etc.
All correlation functions are completed by DSP processing modules.
CH1+IN, CH1-IN, CH2+IN, CH2-IN signal of CH1, CH2 balance channel signal end output, are sent to core respectively
On 10,11,12,13 feet of piece U3, microphone CN3 is external one piece of U sections of sub- receiving module of two-channel wireless microphone, and the machine is furnished with two
U sections of wireless microphones, after wireless microphone start, wireless microphone receiving module receives wireless signal decoding, decoded words
Cylinder audio signal is sent to 6 feet of chip U3 by 4 feet of microphone CN3 through capacitance C132, resistance R126 all the way, and another way is through capacitance
C133, resistance R127 are sent to 14 feet of chip U3.
CH3 stereo signals CH3IN_R and CH3IN_L is sent to the 1 of chip U5,2 feet, and chip U5 is a piece of high s/n ratio
Analog signal is converted to digital signal and is sent to 27 feet of chip U3 by the output of 9 feet by ADC analog-digital converters, then by chip U3 into
The processing of row DSP operation.
CH1, CH2, CH3 passage and U sections of wireless microphone signals enter chip U3, and chip U3 chips have ADC, DAC, DSP
It is powerful, digital signal is converted to by ADC inside chip U3 after this three roads signal entrance, the DSP processing inside by chip U3
Core completes the digital processings such as musical instrument effect, the voice that disappears, EQ.
Chip U7 is also a piece of dsp processor, and inside carries large capacity internal memory, the processing of karaoke delayed reverberation effect
Time, long committed memory amount was big, and under karaoke delayed reverberation tupe, digital signal is transmitted to core by 26 feet of chip U3
27 feet of piece U7 directly send out digital signal by 28 feet after the completion of chip U7 processing, are sent to DAC analog-digital chip chips U6 also
Original becomes analog signal output.Oscillator Y1 is that the clock of U7 chips generates crystal oscillator, is supplied to required all clocks
Signal.
Circuit key control line has/IC, SI, SCK_1761, SC/RSV, U_MIC_ON, is connected with microcontroller, by monolithic
Machine completes intelligent control, reading and writing data.Other crucial audio data line and clock line have MCK, BCK, WCK, DAC_IN, SCK,
ADC_OUT、AUDIO_DOUT。
Operational amplifier U4A is left channel signals amplifying circuit, and operational amplifier U4B is right-channel signals amplifying circuit.
The positive phase signals of L channel export from 18 feet of chip U3 and are sent to the 2 of operational amplifier U4A through capacitance C52, resistance R58, resistance R62
Foot, the negative signal of L channel is exported from 17 feet of chip U3 is sent to operational amplifier through capacitance C53, resistance R59, resistance R63
3 feet of U4A, karaoke delayed reverberation left channel signals export from 11 feet of chip U6 and are sent to computing through capacitance C64, resistance R65
2 feet of amplifier U4A, operational amplifier U4A, capacitance C55, resistance R60, capacitance C52, resistance R58, resistance R62, capacitance C53,
Resistance R59, resistance R63, capacitance C64, resistance R65, resistance R61, capacitance C54, capacitance C56 are supplied with composition L channel balanced signal
Input amplifying circuit, amplified left channel signals are exported by 1 foot of operational amplifier U4A.
The positive phase signals of right channel export from 15 feet of chip U3 and are sent to operation amplifier through capacitance C48, resistance R52, resistance R56
6 feet of device U4B, the negative signal of right channel is exported from 16 feet of chip U3 is sent to fortune through capacitance C47, resistance R53, resistance R57
5 feet of amplifier U4B are calculated, karaoke delayed reverberation right-channel signals are exported from 10 feet of chip U6 through capacitance C63, resistance R64
Be sent to 6 feet of operational amplifier U4B, operational amplifier U4B, capacitance C50, resistance R54, capacitance C48, resistance R52, resistance R56,
Capacitance C47, resistance R53, resistance R57, capacitance C63, resistance R64, resistance R55, capacitance C49, capacitance C51 are supplied with composition right channel
Balanced signal input amplifying circuit, amplified right-channel signals are exported by 7 feet of operational amplifier U4B.
The left and right sound channels signal of operational amplifier U4A and operational amplifier U4B outputs is divided into two-way output, all the way left sound
3 feet of the road through capacitance C58, resistance R78 to socket JK3,2 feet of the right channel through capacitance C59, resistance R79 to socket JK3, socket
JK3 is RTS（6.35mm）Stereo jack, it is used as circuit output, socket output is can also be used as, as slotting
One mute control is sent by microcontroller during seat output, power amplifier circuit is sent to, the mute closing loudspeaker of power amplifier
Sound.Another way signal L channel is mixed through resistance R80, right channel after resistance R97, then through capacitance C154's
OUT_AMP is sent to progress power amplification driving loudspeaker and makes a sound.
By DSP treated signals, L L channels are after capacitance C58, through electricity after being divided by resistance R82, resistance R129
Hold C36 couplings, 23 feet of Bluetooth chip U8 are sent to by REC_L signal wires.R right channels after capacitance C59, by resistance R148,
It is coupled after resistance R149 partial pressures through capacitance C37,15 feet of Bluetooth chip U8 is sent to by REC_R signal wires.Again by bluetooth module U8
Sound-recording function becomes WAV formatted audio files being preserved inside audio recording to USB flash disk or TF card.
To sum up, after those of ordinary skill in the art read the utility model file, technical side according to the present utility model
Case and technical concept make other various corresponding conversion schemes without creative mental labour, belong to the utility model institute
The scope of protection.
Claims (7)
1. a kind of signal DSP processing modules of mobile pull rod speaker, it is characterised in that：Including chip U3, chip U5, chip U6,
Chip U7, microphone CN1, microphone CN2, microphone CN3, operational amplifier U4A, operational amplifier U4B, socket JK3 and oscillator Y
1；Wherein,
1 foot of the chip U3 connects+3.3V power supplys and is grounded by capacitance C41, and the 1 of the 32 feet connection chip U3 of the chip U3
Foot, 2 feet of the chip U3 connect 24 feet of the chip U7,1 foot of chip U6,11 feet of chip U5, the chip respectively
The 3 feet ground connection of U3,6 feet of the chip U3 pass through resistance R126,4 feet of the capacitance C132 connections microphone CN3, the chip
7 feet of U3 are grounded by capacitance C42, and 8 feet of the chip U3 connect+3.3V power supplys and are grounded by capacitance C43, the chip U3
9 feet ground connection, 14 feet of the chip U3 pass through resistance R127,4 feet and capacitance C132 of the capacitance C133 connections microphone CN3
Between node, 15 feet of the chip U3 pass through capacitance C48, resistance R52, the resistance R56 connections operational amplifier U4B
Inverting input, 16 feet of the chip U3 pass through capacitance C47, resistance R53, the resistance R57 connections operational amplifier U4B
In-phase input end, 17 feet of the chip U3 pass through capacitance C53, resistance R59, the resistance R63 connections operational amplifier U4A
In-phase input end, 18 feet of the chip U3 pass through capacitance C52, resistance R58, the resistance R62 connections operational amplifier U4A
Inverting input, 21 feet of the chip U3 are grounded by resistance R51, capacitance C46, the 22 feet ground connection of the chip U3, described
23 feet of chip U3 connect+3.3V power supplys and are grounded by capacitance C44, and 24 feet of the chip U3 are grounded by capacitance C45, described
The 25 feet ground connection of chip U3,26 feet of the chip U3 by 27 feet of the resistance R50 connections chip U7, the chip U3's
27 feet connect 9 feet of the chip U5,28 feet of the chip U3 connect respectively 2 feet of the chip U6, chip U7 7 feet,
12 feet of chip U5,29 feet of the chip U3 connect 4 feet of the chip U6,6 feet of chip U7, the 10 of chip U5 respectively
Foot, the 30 feet ground connection of the chip U3,31 feet of the chip U3 connect 29 feet of the chip U7 respectively, the chip U3's
32 feet connect 1 foot of the chip U6,24 feet of chip U7,11 feet of chip U5 and connect -3.3V electricity by resistance R65 respectively
Source.
2. a kind of signal DSP processing modules of mobile pull rod speaker according to claim 1, it is characterised in that：The core
1 foot of piece U7 connects+3.3V power supplys by resistance R75, and 3 feet of the chip U7 connect+3.3V power supplys and are grounded by capacitance C67,
2 feet of the chip U7 connect 3 feet, and 7 feet of 6 feet connection the resistance R68, the chip U7 of the chip U7 connect resistance R69,
8 feet of the chip U7,15 feet, 30 feet ground connection, 9 feet of the chip U7 are grounded by capacitance C68,10 feet of the chip U7
It is grounded by capacitance C69,11 feet of the chip U7 connect+3.3V power supplys and are grounded by capacitance C70,13 feet of the chip U7
+ 3.3V power supplys are connect, 16 feet of the chip U7 connect+3.3V power supplys and are grounded by capacitance C71, and 25 feet of the chip U7 pass through
Capacitance C74 is grounded, and 10 feet, 12 feet, 17 feet of the chip U7 are connected respectively between 25 feet of the chip U7 and capacitance C74
Node, 26 feet, 23 feet, 19 feet of the chip U7 connect 16 feet of the chip U7, the 24 feet connection of the chip U7 respectively
21 feet of resistance R71, the chip U7 connect 3 ends of the oscillator Y1 and pass through the capacitance C72 connections oscillator Y1
4 ends, 22 feet of the chip U7 connect 1 end of the oscillator Y1 and pass through the 4 of the capacitance C73 connections oscillator Y1
End, 1 end of the oscillator Y1 passes through 3 ends of the resistance R70 connections oscillator Y1,2 ends and 4 of the oscillator Y1
End ground connection.
3. a kind of signal DSP processing modules of mobile pull rod speaker according to claim 1, it is characterised in that：Capacitance C49
One end connection resistance R52 and resistance R56 between node and the other end connection resistance R53 and resistance R57 between node simultaneously
+ 4.5V power supplys are connect by resistance R55, the in-phase input end of the operational amplifier U4B is grounded by capacitance C51, the computing
The inverting input of amplifier U4B passes through the output terminal of the capacitance C50 connections operational amplifier U4B, the operational amplifier
The output terminal of U4B by capacitance C59, the resistance R79 connections socket JK3 2 ends and pass through resistance R54, resistance R64, capacitance
10 feet of the C63 connections chip U6, the node between capacitance C59 and resistance R79 are grounded by resistance R77, resistance R77 one end
Capacitance C37 is connected by resistance R148, the other end respectively by resistance R149, the node connection between capacitance C59 and resistance R54
Resistance R97 and capacitance C154.
4. a kind of signal DSP processing modules of mobile pull rod speaker according to claim 1, it is characterised in that：Capacitance C54
One end connection resistance R58 and resistance R62 between node, the other end connection resistance R59 and resistance R63 between node, institute
The in-phase input end for stating operational amplifier U4A is grounded by capacitance C56, and resistance R61 is in parallel with resistance R63, the operation amplifier
The inverting input of device U4A by the output terminal of the capacitance C55 connections operational amplifier U4A, the operational amplifier U4A's
Output terminal is connected by capacitance C58,3 ends of the resistance R78 connections socket JK3 and by resistance R60, resistance R65, capacitance C64
11 feet of the chip U6 are connect, the node between capacitance C58 and resistance R78 is grounded by resistance R76 and by resistance R129, electricity
Hold C36, resistance R82 ground connection, the node between capacitance C58 and resistance R60 passes through resistance R80 connection resistance R97 and capacitance C154
Between node, the 1 end ground connection of the socket JK3 positive supply termination+9V power supplys of the operational amplifier U4A and passes through electricity
Hold C57 ground connection, the negative power end ground connection of the operational amplifier U4A.
5. a kind of signal DSP processing modules of mobile pull rod speaker according to claim 1, it is characterised in that：The core
3 feet of piece U6 connect the 9 of the chip U7 respectively by 24 feet of the resistance R72 connections chip U7,5 feet of the chip U6
13 feet of foot, chip U5,8 feet, 9 feet and 13 feet of the chip U6 are grounded, and 12 feet of the chip U6 are connect by capacitance C55
Ground, 15 feet of the chip U6 are grounded by the capacitance C66 of series connection and capacitance C121, the capacitance C122 of parallel connection, the chip
14 feet of U6 and 16 feet connect the node between 15 feet of the chip U6 and capacitance C66, between capacitance C121 and capacitance C122
Node connect+3.3V power supplys and+3.4V power supplys connect by resistance R118.
6. a kind of signal DSP processing modules of mobile pull rod speaker according to claim 1, it is characterised in that：The core
3 feet, 5 feet, 8 feet, 14 feet, 15 feet and 16 feet of piece U5 are grounded, and 4 feet of the chip U5 are grounded by capacitance C60, the chip
6 feet of U5 connect+5V power supplys, and 7 feet of the chip U5 connect -3.3V power supplys and are grounded by capacitance C62.
7. a kind of signal DSP processing modules of mobile pull rod speaker according to claim 1, it is characterised in that：The words
2 feet of 3 feet connection the resistance R128, the microphone CN3 of cylinder CN3 connect+9V power supplys by inductance L4, and 1 foot of the microphone CN3 connects
Ground and pass through the node between 2 feet of the capacitance C131 connections microphone CN3 and inductance L4.
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| CN201721259497.4U CN207427444U (en) | 2017-09-28 | 2017-09-28 | A kind of signal DSP processing modules of mobile pull rod speaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650590A (en) * | 2018-08-16 | 2018-10-12 | 广东辉杰智能科技股份有限公司 | A kind of DSP signal processing modules of network direct broadcasting pull rod speaker |
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2017
- 2017-09-28 CN CN201721259497.4U patent/CN207427444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650590A (en) * | 2018-08-16 | 2018-10-12 | 广东辉杰智能科技股份有限公司 | A kind of DSP signal processing modules of network direct broadcasting pull rod speaker |
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