CN106658298A - Bass boost processing circuit and terminal device - Google Patents
Bass boost processing circuit and terminal device Download PDFInfo
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- CN106658298A CN106658298A CN201710093798.2A CN201710093798A CN106658298A CN 106658298 A CN106658298 A CN 106658298A CN 201710093798 A CN201710093798 A CN 201710093798A CN 106658298 A CN106658298 A CN 106658298A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
This application provides a bass boost processing circuit and a terminal device. The circuit comprises a low pass filter, an amplification network and an attenuation network; an input end of the low pass filter is connected with the input end of the attenuation network for receiving an audio signal; an output end of the low pass filter is connected with the input end of the amplification network; and the output end of the amplification network is connected with the output end of the attenuation network for outputting the audio signal. A high-frequency signal is filtered by the low pass filter, after a low-frequency signal is amplified by the amplification network, the low-frequency signal is superposed with the integrally attenuated audio signal so as to boost the bass in the audio signal, an analog signal is directly processed in a bass boost processing course, thereby reducing the influence to sampling and digital to analog conversion processes to the quality of the audio signal and the improving the user experience, and moreover, the circuit is simple in structure, easy to implement and low in cost.
Description
Technical field
The application is related to electronic technology field, more particularly to a kind of bass boost process circuit and terminal unit.
Background technology
According to the auditory properties of human ear, the frequency of audio signal is lower, and human ear more is difficult to feel, and in audio signal
Low-frequency component critically important effect is played to the auditory perception of user, directly affect loud and clear degree, richness, the simple and honest degree of sound
And spatial impression.Therefore, how the bass in audio signal is strengthened, aobvious is particularly important.
Prior art, generally first samples to simulated audio signal, then by Digital Signal Processing (DSP) technology, it is right
The digital audio and video signals that sampling is obtained carry out bass boost, then by the digital audio and video signals Jing digital-to-analogue conversions after process, are converted to
Simulated audio signal, so as to strengthen audio signal in bass effect.
Above-mentioned bass boosting method, due to needing extra increase such as modulus sampling A/D chip, DSP process chips, digital-to-analogue
Conversion chip etc., relatively costly, circuit is complicated, and during sampling and digital-to-analogue conversion, may produce new noise and
Distortion, affects the quality of final audio signal, poor user experience.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
For this purpose, it is an object of the present invention to propose a kind of bass boost process circuit, by using low pass filter
High-frequency signal is filtered, and after signal amplification is carried out to low frequency signal using amplification network, with the audio signal after overall attenuation
It is overlapped, realizing carries out enhancement process to the bass in audio signal, and bass boost processing procedure is directly to analogue signal
Processed, so as to reduce sampling and impact of the digital-to-analogue transformation process to audio signal quality, improved Consumer's Experience, and electricity
Line structure is simple, easily realization, low cost.
Second object of the present invention is to propose a kind of terminal unit.
To reach above-mentioned purpose, a kind of bass boost process circuit that the embodiment of the present invention is proposed, including：Low-pass filtering
Device, amplification network and attenuation network；
The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；
The outfan for amplifying network is connected with the outfan of the attenuation network, for exports audio signal.
The bass boost process circuit that the embodiment of the present application is provided, including：Low pass filter, amplification network and attenuation network
Network；The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；The low pass
The outfan of wave filter is connected with the input of the amplification network；The outfan and the attenuation network for amplifying network
Outfan connects, for exports audio signal.Thus, high-frequency signal is filtered by using low pass filter, and using amplification
Network is carried out after signal amplification to low frequency signal, is overlapped with the audio signal after overall attenuation, is realized to audio signal
In bass carry out enhancement process, bass boost processing procedure is directly processed analogue signal, so as to reduce sampling and
Impact of the digital-to-analogue conversion process to audio signal quality, improves Consumer's Experience, and circuit structure is simple, easily realizes, low cost.
Additionally, the embodiment of the present invention also proposed a kind of terminal unit, including following one or more assemblies：Circuit board,
Housing, processor, memorizer, power circuit, bass boost process circuit, and communication component；Wherein, the circuit board placement
In the interior volume that the housing is surrounded, the processor, the memorizer and the bass boost process circuit are arranged on institute
State on circuit board；The power circuit, powers for each circuit or device for the terminal unit；The memorizer is used for
Storage executable program code；The processor by reading the memorizer in the executable program code that stores run with
The corresponding program of the executable program code；
The bass boost process circuit, including：Low pass filter, amplification network and attenuation network；
The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；
The outfan for amplifying network is connected with the outfan of the attenuation network, for exports audio signal.
In the terminal unit that the embodiment of the present application is provided, bass boost process circuit includes：Low pass filter, amplification network
And attenuation network；The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；The outfan for amplifying network declines with described
Subtract the outfan connection of network, for exports audio signal.Thus, high-frequency signal is filtered by using low pass filter, and
Low frequency signal is carried out after signal amplification using network is amplified, be overlapped with the audio signal after overall attenuation, it is right to realize
Bass in audio signal carries out enhancement process, and bass boost processing procedure is directly processed analogue signal, so as to reduce
The impact of sampling and digital-to-analogue transformation process to audio signal quality, improves Consumer's Experience, and circuit structure is simple, Yi Shi
Existing, low cost.
Description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
It is substantially and easy to understand, wherein：
Fig. 1 is the structural representation of the bass boost process circuit of the application one embodiment；
Fig. 2 is the structural representation of the bass boost process circuit of the application another embodiment；
Fig. 3 is the structural representation of the bass boost process circuit of the application another embodiment；
Fig. 4 is the structural representation of the bass boost process circuit of the application another embodiment；
Fig. 5 is the structural representation of the bass boost process circuit of the application another embodiment；
Fig. 6 is the structural representation of the bass boost process circuit of the application another embodiment；
Fig. 7 is the structural representation of the terminal unit of the application one embodiment.
Description of reference numerals：
Low pass filter -11；Amplify network -12；Attenuation network -13；
High pass filter -14；Gating network -15；First resistor-R1；
First electric capacity-C1；Second electric capacity-C2；3rd electric capacity-C3；
Second resistance-R2；3rd resistor-R3；4th resistance-R4；
5th resistance-R5；6th resistance-R6；7th resistance-R7；
8th resistance-R8；Operational amplifier-U1；Impedance matching network -16；
Build-out resistor-R；Circuit board -71；Housing -72；
Processor -73；Memorizer -74；Power circuit -75；
Bass boost process circuit -76；Communication component -77.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Specifically, each embodiment of the application is directed to existing bass boosting method, due to needing extra increase such as mould
Number sampling A/D chip, DSP process chips, analog-digital chip etc., relatively costly, circuit is complicated, and in sampling and digital-to-analogue conversion
During, new noise and distortion may be produced, affect the quality of final audio signal, the problem of poor user experience to propose
Simulated audio signal is divided into two-way by one kind, and high frequency is filtered all the way, selectively strengthens low frequency, and another road is to whole audio signal
Decayed, then by the bass boost process circuit of two-way audio Signal averaging, bass boost processing procedure is directly to simulation
Signal is processed, and reduces sampling and impact of the digital-to-analogue transformation process to audio signal quality, and circuit structure is simple, Yi Shi
Existing, low cost.
With reference to the accompanying drawings describing the bass boost process circuit and terminal unit of proposition according to embodiments of the present invention.
Fig. 1 is the structural representation of the bass boost process circuit of the application one embodiment.
As shown in figure 1, bass boost process circuit, including：Low pass filter 11, amplification network 12 and attenuation network 13；
Wherein, the input of the low pass filter 11 is connected with the input of the attenuation network 13, for receiving sound
Frequency signal；
The outfan of the low pass filter 11 is connected with the input of the amplification network 12；
The outfan for amplifying network 12 is connected with the outfan of the attenuation network 13, for exports audio signal.
Specifically, attenuation network 13, the π type attenuation networks that can be made up of multiple resistance, T-shaped attenuation network or other
Various types of attenuation networks, are not restricted herein.
It is understood that low pass filter can allow to pass through less than the signal of its cut-off frequency, therefore, in the application
In embodiment, in order to strengthen the bass in audio signal, it is possible to use the characteristic of low pass filter 11, audio frequency letter is filtered
Number high-frequency signal, then the low frequency signal to obtaining is amplified process, is finally superimposed with the whole audio signal after decay, from
And obtain the enhanced audio signal of bass signal.
Specifically, audio signal can be divided into two-way, and all the way low-pass filtered device 11 filters high-frequency signal, and amplified net
Network 12 amplifies, the low frequency signal after being amplified；Another road Jing attenuation networks 13 are decayed, and obtain high-frequency signal and low frequency letter
Number all decay and attenuation multiple identical audio signal, then by the low frequency signal after amplification with decay after audio signal be superimposed.
In the embodiment of the present application, when being decayed due to the whole audio signal to audio signal all the way, to audio signal in it is low
Frequency signal and high-frequency signal have carried out the decay of same degree, and to another road audio signal in, low-pass filtered device 11 is filtered
The low frequency signal for obtaining afterwards is exaggerated, therefore, the audio signal after superposition compares original audio signal, low frequency therein
Proportion shared by signal increases, so that bass is strengthened.
The bass boost process circuit that the embodiment of the present application is provided, including：Low pass filter, amplification network and attenuation network
Network；The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；The low pass
The outfan of wave filter is connected with the input of the amplification network；The outfan and the attenuation network for amplifying network
Outfan connects, for exports audio signal.Thus, high-frequency signal is filtered by using low pass filter, and using amplification
Network is carried out after signal amplification to low frequency signal, is overlapped with the audio signal after overall attenuation, is realized to audio signal
In bass carry out enhancement process, bass boost processing procedure is directly processed analogue signal, so as to reduce sampling and
Impact of the digital-to-analogue conversion process to audio signal quality, improves Consumer's Experience, and circuit structure is simple, easily realizes, low cost.
By above-mentioned analysis, after being amplified to the low frequency signal that audio signal frequency dividing is obtained, with entirety
Audio signal superposition after decay, obtains the audio signal of bass boost.In practice, because the audition between user is deposited
Audio signal after difference, overall attenuation is superimposed the audio signal to be formed with the low frequency signal after amplification, it may not be possible to meet
The auditory perception of certain user, therefore, in a kind of possible way of realization of the application, can be right with according to the selection of user
High-frequency signal in audio signal carries out a certain degree of decay, then is superimposed with the low frequency signal after amplification, so as to make what is obtained
The bass boost degree of audio signal meets the needs of user.That is, the bass boost process circuit that the application is provided, such as Fig. 2 institutes
Show, can also include：High pass filter 14.
Specifically, the input of the high pass filter 14 is connected with the input of low pass filter 11, the high pass filter
The outfan of ripple device 14 is connected with the input of the attenuation network 13.
Wherein, high pass filter 14 can be electric capacity, RC circuits etc., not be restricted herein.
When implementing, audio signal is divided into after two-way, and all the way low-pass filtered device 11 filters high-frequency signal, and amplified
Network 12 amplifies, the low frequency signal after being amplified；Another road Jing high pass filters 14 filter low frequency signal, and Jing attenuation networks
13 are decayed, the high-frequency signal after being decayed, then the high-frequency signal after decay is superimposed with the low frequency signal after amplification.
In the embodiment of the present application, while the low frequency signal to obtaining is amplified, also the high-frequency signal to obtaining is decayed, because
This, the audio signal after superposition compares original audio signal, and the proportion shared by low frequency signal therein increases, so that bass
Strengthened, and compared with decay is carried out to whole audio signal, only the high-frequency signal in audio signal is decayed, can
So that the degree of bass boost is higher, the needs of user are better met.
It should be noted that in the embodiment of the present application, audio signal is divided into after two-way, it is also possible to will believe audio frequency all the way
Number first it is amplified, then high-frequency signal is filtered by low pass filter 11, another road signal elder generation Jing attenuation networks 13 is declined
Subtract, then Jing high pass filters 14 filter low frequency signal, and finally it is superposed to the audio signal of bass boost.Specific circuit connection
Here is omitted for relation.
Further, the bass boost process circuit that the application is provided, can also make user as needed, select to whole
Audio signal is decayed or only high-frequency signal is decayed, i.e. in the bass boost process circuit that the application is provided,
As shown in Fig. 2 gating network 15 can also be included.
Wherein, the first input end of gating network 15, is connected with the input of low pass filter 11 and high pass filter 14；
Second input of gating network 15, is connected with the outfan of high pass filter 14；
The outfan of gating network 15 is connected with the input of attenuation network 13, and gating network is used for according to control signal control
First input end processed or the second input are connected with the outfan of gating network 15.
Specifically, gating network 15 can include following any one device：Single-pole double-throw switch (SPDT), gate, in Fig. 2 with
Gating network 15 is illustrated for single-pole double-throw switch (SPDT).
It is understood that so that gating network 15 is as single-pole double-throw switch (SPDT) as an example, the movable contact spring of single-pole double-throw switch (SPDT) and
During the contact of one input, the first input end of gating network 15 is connected with outfan, and now, the audio signal of input is straight
Connecing Jing attenuation networks 13 carries out overall attenuation, then is superimposed with the low frequency signal after amplification, obtains the audio signal of bass boost；It is single
During the contact of the movable contact spring of double-pole double throw switch and the second input, the second input and the outfan of gating network 15 connect
Connect, now, the audio signal of input is Jing after the filtering of high pass filter 14, then Jing attenuation networks 13 are decayed, i.e., only to audio frequency
High-frequency signal in signal is decayed, and obtains the audio signal of bass boost.Therefore, by gating network 15, you can according to
The control signal of control end input, control first input end or the second input are connected with the outfan of gating network 15, so as to
Control is decayed to whole audio signal or only high-frequency signal is decayed.
When implementing, can settings button on the terminal device, whole audio signal is decayed with controlling or
Only high-frequency signal is decayed, user can press button or press different buttons by different power as needed, raw
Into corresponding control signal, so that the outfan of gating network 15 can be according to the control signal of control end input, with first
Input or the second input connect, and then control is decayed to whole audio signal or only high-frequency signal is declined
Subtract.
The structure of the bass boost process circuit that above-described embodiment is proposed to the application is illustrated, referring to attached
Figure, in the embodiment of the present application, each several part for constituting bass boost process circuit is specifically described.
Fig. 3 is the structural representation of the bass boost process circuit of the application another embodiment.
As shown in figure 3, low pass filter 11 can include first resistor R1 and the first electric capacity C1.
Wherein, one end of first resistor R1 is connected with the input of the attenuation network 13, first resistor R1
The other end be connected with one end of the first electric capacity C1 and the input of the amplification network 12；
The other end of the first electric capacity C1 is connected to ground.
It should be noted that the refer to the attached drawing in the application is and schematically illustrates, it is intended to for explaining the application, and not
It is understood that to be the restriction to the application.
Specifically, the cut-off frequency of the low pass filter 11 for being constituted due to first resistor R1 and the first electric capacity C1 is 1/ (R1*
C1 the low pass filter 11 for), therefore by first resistor R1 and the first electric capacity C1 constituting, you can filter out higher than cut-off frequency 1/
(R1*C1) signal, obtains the signal less than cut-off frequency 1/ (R1*C1).
It is understood that in practice, due to the frequency of audio signal it is varied, for example, audio signal
Audio frequency range can typically include multiple frequency ranges, such as low-frequency range, middle low frequency, medium-high frequency section, high band, and first resistor
The cut-off frequency of low pass filter 11 of R1 and the first electric capacity C1 compositions is certain, therefore, Jing first resistors R1 and first electric
The tonequality of the low frequency signal obtained after the filtration of low pass filter 11 for holding C1 compositions may be thiner, lacks simple and honest degree and space
Sense, therefore, in the embodiment of the present application, frequency-selective network can also be utilized, the signal of different frequency in audio signal is carried out not
With the filtration of degree.That is, as shown in figure 4, the embodiment of the present application provide bass boost process circuit in, low pass filter 11
The second electric capacity C2, the 3rd electric capacity C3 and second resistance R2 can also be included.
Wherein, one end of the second electric capacity C2 and one end of the first electric capacity C1 and first resistor R1 is another
End connection, the other end of the second electric capacity C2 connects with one end of the 3rd electric capacity C3 and the outfan of the amplification network 12
Connect；
The other end of the 3rd electric capacity C3, the other end and one end of second resistance R2 with the first electric capacity C1
Connection；
The other end ground connection of second resistance R2.
In addition, as shown in figure 5, amplification network 12, specifically can include：3rd resistor R3, the 4th resistance R4, operation amplifier
Device U1 and the 5th resistance R5.
Wherein, the 5th resistance R5 can be fixed resistance, variable resistance etc..With the 5th resistance R5 as fixed resistance in Fig. 5
Illustrated.
Specifically, one end of 3rd resistor R3 is connected with the outfan of the low pass filter 11, and the described 3rd is electric
The other end of resistance R3 is connected with the positive input of the operational amplifier U1；
One end of the 4th resistance R4 is connected to ground, the other end and the operational amplifier U1 of the 4th resistance R4
Negative input and the 5th resistance R5 one end connection；
The other end of the 5th resistance R5 and the outfan of the operational amplifier U1 and the attenuation network 13 it is defeated
Go out end connection.
If it is understood that flow through the 4th resistance R4 electric current be I, the electricity of the negative input of operational amplifier U1
Pressure U-, is the voltage I*R4 on the 4th resistance R4, by " void is disconnected " characteristic of operational amplifier U1, flows through the electricity on the 5th resistance R5
Stream is equal with the electric current flow through on the 4th resistance R4, therefore, the output end voltage UO of operational amplifier U1 for the 4th resistance R4 and
Voltage on 5th resistance R5, i.e. UO=I* (R4+R5), and by " empty short " characteristic of operational amplifier U1, operational amplifier U1
Negative input voltage U- it is equal with positive input voltage U+, i.e. U+=I*R4, therefore, the times magnification of operational amplifier U1
Number is (R4+R5)/R4.Low-pass filtered device 11 filters the amplified network 12 of the low frequency signal for after high-frequency signal, obtaining, you can put
Greatly (R4+R5)/R4 times.
In the embodiment of the present application, when the 5th resistance R5 is variable resistance, the amplification of network 12 is amplified with the 5th
The change of resistance R5 and change, therefore by adjust the 5th resistance R5 resistance, the intensity of bass boost can be adjusted.
In addition, in order to carry out more precise control to the amplification for amplifying network 12, in the embodiment of the present application, such as scheming
Shown in 6, the 6th resistance R6 can also be included.
Wherein, one end of the 6th resistance R6 is connected with the other end of 3rd resistor R3, the 6th resistance R6
The other end be connected to ground.
It is understood that because 3rd resistor R3 is connected to ground by the 6th resistance R6, therefore, operational amplifier U1's
Positive input voltage, is partial pressure value of the voltage of the low frequency signal that low pass filter 11 is exported on the 6th resistance R6, therefore,
By electric resistance partial pressure, it is possible to achieve the low frequency signal of the output of low pass filter 11 is decayed.
The embodiment of the present application, by arranging the 6th resistance R6, can be carried out to the low frequency signal of the output of low pass filter 11
Decay, recycles operational amplifier U1 to be amplified, and therefore, it can the amplification that more precise control amplifies network 12, from
And in more precise control audio signal bass boost degree.
It should be noted that the other end of the 6th resistance R6 can also be connected with one end of second resistance R2, and now, computing
The positive input voltage of amplifier U1 is the voltage of low frequency signal of the output of low pass filter 11 in the 6th resistance R6 and second
Partial pressure value on resistance R2.
In addition, the maximum transmitted in order to realize power, in the bass boost process circuit that the embodiment of the present application is provided, such as
Shown in Fig. 6, impedance matching network 16 can also be included, for realizing impedance matching.
Specifically, the input of the impedance matching network 16 is connected with the outfan of the amplification network 12, the resistance
The outfan of anti-matching network 16 is connected with the outfan of the attenuation network 13.
Wherein, impedance matching network 16 can be made up of build-out resistor.One is included in Fig. 6 with impedance matching network 16
Illustrated with resistance R.
It should be noted that can be suitable in the bass boost process circuit that the embodiment of the present application is provided as needed
Position arranges resistance, to realize the impedance matching of circuit.
In addition, as shown in fig. 6, attenuation network 13, can specifically include the 7th resistance R7 and the 8th resistance R8.
Wherein, one end of the 7th resistance R7 is connected with the input of the low pass filter 11, the 7th resistance
The other end of R7 is connected with one end of the 8th resistance R8 and the outfan of the amplification network 12；
The other end of the 8th resistance R8 is connected to ground.
Specifically, because the 7th resistance R7 is connected to ground by the 8th resistance R8, therefore the voltage of the output of attenuation network 13
It is worth the partial pressure value of the voltage on the 8th resistance R8 of the audio signal for input, by electric resistance partial pressure, you can realize believing audio frequency
Number overall attenuation.
It should be noted that in the embodiment of the present application, arbitrary resistance can be the serial or parallel connection of multiple resistance, example
Such as, the 7th resistance R7 shown in Fig. 6 can be made up of two resistant series, and the 8th resistance R8 can be by two resistor coupled in parallel structures
Into.Accordingly, in the embodiment of the present application, arbitrary electric capacity can be the serial or parallel connection of multiple electric capacity, for example, shown in Fig. 6
The 3rd electric capacity C3 can be made up of two electric capacity parallel connections.
The bass boost process circuit that the embodiment of the present application is provided, including：Low pass filter, amplification network and attenuation network
Network；The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；The low pass
The outfan of wave filter is connected with the input of the amplification network；The outfan and the attenuation network for amplifying network
Outfan connects, for exports audio signal.Thus, high-frequency signal is filtered by using low pass filter, and using amplification
Network is carried out after signal amplification to low frequency signal, is overlapped with the audio signal after overall attenuation, is realized to audio signal
In bass carry out enhancement process, bass boost processing procedure is directly processed analogue signal, so as to reduce sampling and
Impact of the digital-to-analogue conversion process to audio signal quality, improves Consumer's Experience, and circuit structure is simple, easily realizes, low cost.
And by using high pass filter, audio signal is filtered after low frequency signal, then decayed, it is achieved thereby that to audio signal
Bass carry out different degrees of enhancing, meet the needs of user, improve Consumer's Experience.
In order to realize above-described embodiment, the application also proposes a kind of terminal unit.
Fig. 7 is the structural representation of the terminal unit of the application one embodiment.
As shown in fig. 7, the terminal unit includes following one or more assemblies：Circuit board 71, housing 72, processor 73,
Memorizer 74, power circuit 75, bass boost process circuit 76, and communication component 77.
Wherein, the circuit board 71 is placed in the interior volume that the housing 72 is surrounded, the processor 73, the storage
Device 74 and the bass boost process circuit 76 are arranged on the circuit board 71；The power circuit 75, for for the end
Each circuit of end equipment or device are powered；The memorizer 74 is used to store executable program code；The processor 73 leads to
Cross and read the executable program code stored in the memorizer 74 running program corresponding with the executable program code；
Wherein, the bass boost process circuit 76, including：Low pass filter, amplification network and attenuation network；
The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；
The outfan for amplifying network is connected with the outfan of the attenuation network, for exports audio signal.
It should be noted that the aforementioned explanation to bass boost process circuit embodiment is also applied for the embodiment
Terminal unit, it realizes that principle is similar to, and here is omitted.
In addition, Fig. 7 is illustrated by mobile phone of terminal unit, it is to be understood that the terminal that the embodiment of the present application is provided
Equipment, not only can be mobile phone, or the miscellaneous equipment with audio playing function, such as computer, TV.
In the terminal unit that the embodiment of the present application is provided, bass boost process circuit includes：Low pass filter, amplification network
And attenuation network；The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；The outfan for amplifying network declines with described
Subtract the outfan connection of network, for exports audio signal.Thus, high-frequency signal is filtered by using low pass filter, and
Low frequency signal is carried out after signal amplification using network is amplified, be overlapped with the audio signal after overall attenuation, it is right to realize
Bass in audio signal carries out enhancement process, and bass boost processing procedure is directly processed analogue signal, so as to reduce
The impact of sampling and digital-to-analogue transformation process to audio signal quality, improves Consumer's Experience, and circuit structure is simple, Yi Shi
Existing, low cost.
In describing the invention, it is to be understood that the orientation of instruction such as term " area ", " width ", " circumference " or
Position relationship is, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplify description, and not
Be indicate or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the term such as term " setting ", " connection " should do broad sense reason
Solution, for example, it may be being mechanically connected, or electrically connecting；Can be joined directly together, it is also possible to by the indirect phase of intermediary
Even, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clearly restriction.For this
For the those of ordinary skill in field, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained in the M embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term necessarily pin
To be identical embodiment or example.And, the specific features of description, structure, material or feature can any one or
Combine in an appropriate manner in multiple embodiments or example.Additionally, in the case of not conflicting, those skilled in the art
The feature of the different embodiments or example described in this specification and different embodiments or example can be combined and group
Close.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of bass boost process circuit, it is characterised in that include：Low pass filter, amplification network and attenuation network；
The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；
The outfan for amplifying network is connected with the outfan of the attenuation network, for exports audio signal.
2. circuit as claimed in claim 1, it is characterised in that also include：High pass filter；
The input of the high pass filter is connected with the input of low pass filter, the outfan of the high pass filter and institute
State the input connection of attenuation network.
3. circuit as claimed in claim 1, it is characterised in that the low pass filter includes first resistor and the first electric capacity；
One end of the first resistor is connected with the input of the attenuation network, the other end of the first resistor and described
The input connection of one end of one electric capacity and the amplification network；
The other end of first electric capacity is connected to ground.
4. circuit as claimed in claim 3, it is characterised in that the low pass filter also includes：Second electric capacity, the 3rd electric capacity
And second resistance；
One end of second electric capacity is connected with one end of first electric capacity and the other end of the first resistor, and described second
The other end of electric capacity is connected with one end of the 3rd electric capacity and the outfan of the amplification network；
The other end of the 3rd electric capacity, is connected with the other end of first electric capacity and one end of the second resistance；
The other end ground connection of the second resistance.
5. the circuit as described in claim 1-4 is arbitrary, it is characterised in that the amplification network, including：3rd resistor, the 4th
Resistance, operational amplifier and the 5th resistance；
One end of the 3rd resistor is connected with the outfan of the low pass filter, the other end of the 3rd resistor with it is described
The positive input connection of operational amplifier；
One end of 4th resistance is connected to ground, and the other end of the 4th resistance is input into the negative sense of the operational amplifier
One end connection of end and the 5th resistance；
The other end of the 5th resistance is connected with the outfan of the outfan of the operational amplifier and the attenuation network.
6. circuit as claimed in claim 5, it is characterised in that the 5th resistance is variable resistance.
7. circuit as claimed in claim 5, it is characterised in that also include：6th resistance；
One end of 6th resistance is connected with the other end of the 3rd resistor, and the other end of the 6th resistance is with ground even
Connect.
8. the circuit as described in claim 1-4 is arbitrary, it is characterised in that also include：Impedance matching network；
The input of the impedance matching network is connected with the outfan of the amplification network, the output of the impedance matching network
End is connected with the outfan of the attenuation network.
9. the circuit as described in claim 1-4 is arbitrary, it is characterised in that the attenuation network, including：7th resistance and the 8th
Resistance；
One end of 7th resistance is connected with the input of the low pass filter, the other end of the 7th resistance with it is described
The outfan connection of one end of the 8th resistance and the amplification network；
The other end of the 8th resistance is connected to ground.
10. a kind of terminal unit, it is characterised in that including following one or more assemblies：Circuit board, housing, processor, storage
Device, power circuit, bass boost process circuit, and communication component；Wherein, the circuit board is placed in what the housing was surrounded
Interior volume, the processor, the memorizer and the bass boost process circuit are arranged on the circuit board；The electricity
Source circuit, powers for each circuit or device for the terminal unit；The memorizer is used to store executable program generation
Code；The processor is run and the executable program generation by the executable program code stored in the reading memorizer
The corresponding program of code；
The bass boost process circuit, including：
Low pass filter, amplification network and attenuation network；
The input of the low pass filter is connected with the input of the attenuation network, for receiving audio signal；
The outfan of the low pass filter is connected with the input of the amplification network；
The outfan for amplifying network is connected with the outfan of the attenuation network, for exports audio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710093798.2A CN106658298B (en) | 2017-02-21 | 2017-02-21 | Bass enhancement processing circuit and terminal equipment |
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| CN201710093798.2A CN106658298B (en) | 2017-02-21 | 2017-02-21 | Bass enhancement processing circuit and terminal equipment |
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| CN106658298B CN106658298B (en) | 2020-01-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231599A (en) * | 2017-06-08 | 2017-10-03 | 北京奇艺世纪科技有限公司 | A kind of 3D sound fields construction method and VR devices |
| CN108235184A (en) * | 2018-01-17 | 2018-06-29 | 潍坊歌尔电子有限公司 | A kind of bass bossting circuit and audio-frequence player device |
| CN111856152A (en) * | 2020-07-28 | 2020-10-30 | 哈尔滨工业大学 | Pulse signal sampling method and device |
| CN112637741A (en) * | 2020-12-30 | 2021-04-09 | 广州酷狗计算机科技有限公司 | Audio signal processing method, device, chip, electronic equipment and storage medium |
| CN115549602A (en) * | 2022-10-25 | 2022-12-30 | 合肥本源量子计算科技有限责任公司 | Low noise amplifier circuit, low noise amplifier and quantum computer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371803A (en) * | 1990-08-31 | 1994-12-06 | Bellsouth Corporation | Tone reduction circuit for headsets |
| JPH11249654A (en) * | 1998-03-05 | 1999-09-17 | Roland Corp | Effector |
| CN1801611A (en) * | 2005-12-20 | 2006-07-12 | 深圳兰光电子集团有限公司 | Bass boosting processing method and device |
| CN1992513A (en) * | 2005-12-27 | 2007-07-04 | 雅马哈株式会社 | Effect adding method and effect adding apparatus |
| CN101715158A (en) * | 2008-10-03 | 2010-05-26 | 瑞昱半导体股份有限公司 | Apparatus and method for processing audio signal |
| CN101964190A (en) * | 2009-07-24 | 2011-02-02 | 敦泰科技(深圳)有限公司 | Method and device for restoring signal under speaker cut-off frequency to original sound |
-
2017
- 2017-02-21 CN CN201710093798.2A patent/CN106658298B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371803A (en) * | 1990-08-31 | 1994-12-06 | Bellsouth Corporation | Tone reduction circuit for headsets |
| JPH11249654A (en) * | 1998-03-05 | 1999-09-17 | Roland Corp | Effector |
| CN1801611A (en) * | 2005-12-20 | 2006-07-12 | 深圳兰光电子集团有限公司 | Bass boosting processing method and device |
| CN1992513A (en) * | 2005-12-27 | 2007-07-04 | 雅马哈株式会社 | Effect adding method and effect adding apparatus |
| CN101715158A (en) * | 2008-10-03 | 2010-05-26 | 瑞昱半导体股份有限公司 | Apparatus and method for processing audio signal |
| CN101964190A (en) * | 2009-07-24 | 2011-02-02 | 敦泰科技(深圳)有限公司 | Method and device for restoring signal under speaker cut-off frequency to original sound |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231599A (en) * | 2017-06-08 | 2017-10-03 | 北京奇艺世纪科技有限公司 | A kind of 3D sound fields construction method and VR devices |
| CN108235184A (en) * | 2018-01-17 | 2018-06-29 | 潍坊歌尔电子有限公司 | A kind of bass bossting circuit and audio-frequence player device |
| CN108235184B (en) * | 2018-01-17 | 2020-08-28 | 潍坊歌尔电子有限公司 | Bass enhancement circuit and audio playing equipment |
| CN111856152A (en) * | 2020-07-28 | 2020-10-30 | 哈尔滨工业大学 | Pulse signal sampling method and device |
| CN112637741A (en) * | 2020-12-30 | 2021-04-09 | 广州酷狗计算机科技有限公司 | Audio signal processing method, device, chip, electronic equipment and storage medium |
| CN112637741B (en) * | 2020-12-30 | 2023-03-10 | 广州酷狗计算机科技有限公司 | Audio signal processing method, device, chip, electronic equipment and storage medium |
| CN115549602A (en) * | 2022-10-25 | 2022-12-30 | 合肥本源量子计算科技有限责任公司 | Low noise amplifier circuit, low noise amplifier and quantum computer |
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