CN209419827U - A kind of signal processing system suitable for musical instrument speaker - Google Patents
A kind of signal processing system suitable for musical instrument speaker Download PDFInfo
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- CN209419827U CN209419827U CN201920262498.7U CN201920262498U CN209419827U CN 209419827 U CN209419827 U CN 209419827U CN 201920262498 U CN201920262498 U CN 201920262498U CN 209419827 U CN209419827 U CN 209419827U
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Abstract
A kind of signal processing system suitable for musical instrument speaker, including microphone signal input interface JK1, music signal input interface JK2 and instrument signal input interface JK3, the microphone signal input interface JK1, the signal of music signal input interface JK2 directly inputs functional module, the signal of the instrument signal input interface JK3 inputs the impedance matching module for carrying out impedance matching, the impedance matching module treated all the way signal directly input functional module, treated that another way signal inputs the bandpass filter for screening signal frequency range for the impedance matching module, the bandpass filter treated signal passes through limiter diode input functional module, functional module treated audio signal passes through loudspeaker after audio amplifier circuit amplifies and plays.The utility model can carry out respective handling to a variety of audio signals of input by this chip of functional module and carry out multi-effect processing and control, also reduce cost while simplifying circuit.
Description
Technical field
The utility model relates to audio signal processing technique fields, and in particular to a kind of signal processing system suitable for musical instrument speaker
System.
Background technique
Existing musical instrument speaker, belongs to professional speaker, corresponding for being handled a variety of audios received and being carried out
Effect process (such as echo, reverberation, chorus, phase shift and other effects handle) perfect reduction afterwards, and for the sound quality effect that makes that treated
Fruit is preferable, needs to carry out multi task process to a variety of audio signals received: simulate firstly the need of by the muli-sounds received
Signal is converted to digital signal, then again by the digital signal after effect process after muti-piece dsp chip carries out a series of processing
Analog signal output is converted into speaker.
In the process, muti-piece chip is needed to carry out processing and effect process to the audio signal of input, such as echo, mixed
It requires to introduce respective chip respectively when sound, chorus, phase shift and other effects processing, can just obtain the preferable acoustics of effect；And
And during this, due to being related to muti-piece chip, needs to introduce MCU again and be just able to achieve control, not only circuit is complicated, but also
Due to leading to higher cost using muti-piece chip.In addition, existing musical instrument speaker, in order to realize multifunction, such as human-computer dialogue is shown
Show dialogue, audio are adjusted, reverberation is adjusted etc., it is also desirable to certain certain chips be added, and MCU is needed to realize control；As it can be seen that existing
Musical instrument sound, function is more perfect, acoustics is better, and the chip introduced is more, and circuit is also more complicated, and cost is caused also to be got over
It is high.
Utility model content
In view of the deficiencies of the prior art, the utility model proposes a kind of signal processing systems suitable for musical instrument speaker, lead to
Respective handling can be carried out to a variety of audio signals of input and carry out multi-effect processing and control by crossing functional module this chip
System does not need to introduce MCU, also reduces cost while simplifying circuit.
The technical solution of the utility model is achieved in that a kind of signal processing system suitable for musical instrument speaker, packet
Microphone signal input interface JK1, music signal input interface JK2 and instrument signal input interface JK3 are included, the microphone signal is defeated
Incoming interface JK1, music signal input interface JK2 signal directly input functional module, the instrument signal input interface JK3's
Signal inputs the impedance matching module for carrying out impedance matching, the impedance matching module treated all the way signal it is directly defeated
Enter functional module, treated that another way signal inputs the bandpass filtering for screening signal frequency range for the impedance matching module
Device, the bandpass filter treated signal pass through limiter diode input functional module, microphone signal, music signal and pleasure
Device signal is input in audio amplifier circuit after functional module is handled, and treated that audio signal is amplified through audio for functional module
It is played after circuit amplification by loudspeaker.
Preferably, the functional module includes for converting analog signals into the ADC of digital signal, turning digital signal
It is changed to the DAC and audio frequency effect device of analog signal, the functional module is AP8248.
Preferably, the functional module receives signal by ADC, and the signal of the functional module processing is converted by DAC
To give audio amplifier circuit after analog signal.
Preferably, the audio frequency effect device includes Forlan brother effect device, Chorus, Phasing device, reverberation effect
Device, Echo device and Wah.
It preferably, further include power module for power supply, the power module is connect with the function module circuit.
Preferably, the power module is SY8120B DC-DC power source.
Preferably, the bandpass filter carries out undercut to signal, height cuts processing.
Preferably, the audio amplifier circuit is TPA3112.
Compared with prior art, the utility model has the advantage that the utility model can be directly right by functional module
The signal that microphone signal input interface, music signal input interface input is handled；And instrument signal input interface is inputted
Signal, after the impedance matching of impedance matching module, signal directly inputs functional module and is handled all the way, another way letter
After number cutting processing by bandpass filter undercut, height, using limiter diode input functional module；It finally will be after above-mentioned processing
Instrument signal, microphone signal and audio signal selected to be output to loudspeaking after carrying out echo, reverberation and other effects processing according to user
It is played in device.The utility model need to can only carry out a variety of audio signals of input by this chip of functional module a variety of
Effect process is simultaneously controlled, and is not needed to introduce MCU, is also reduced cost while simplifying circuit；And it is practical new using this
Functional module in type also do not need to be re-introduced into chip or introduced multi-chip when Function Extension, is greatly simplified
Circuit.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the system structure diagram for one embodiment of signal processing system that the utility model is suitable for musical instrument speaker；
Fig. 2 is the circuit diagram for one embodiment of signal processing system that the utility model is suitable for musical instrument speaker.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of signal processing system suitable for musical instrument speaker disclosed in present embodiment, including microphone letter
Number input interface JK1, music signal input interface JK2 and instrument signal input interface JK3, microphone signal input interface JK1, sound
The signal of music signal input interface JK2 directly inputs functional module, and the signal of instrument signal input interface JK3 is inputted for carrying out
The impedance matching module of impedance matching, impedance matching module treated all the way signal directly input functional module, impedance matching
Another way signal after resume module inputs the bandpass filter for screening signal frequency range, bandpass filter treated signal
By limiter diode input functional module, microphone signal, music signal and instrument signal are input to after functional module is handled
In audio amplifier circuit, functional module treated audio signal passes through loudspeaker after audio amplifier circuit amplifies and plays.Tool
Body, audio amplifier circuit TPA3112.
Wherein, functional module includes for converting analog signals into the ADC of digital signal, converting digital signals into mould
The DAC and audio frequency effect device of quasi- signal；Functional module is AP8248, ADC, DAC and audio frequency effect device can be integrated in one
Body significantly simplifies circuit structure.In the utility model embodiment, ADC and DAC, function are built-in in AP8248 chip
Module receives microphone signal, music signal and instrument signal by ADC, and is converted into counting by these signal from analog signals respectively
Effect process is carried out by audio frequency effect device after word signal, it is defeated that the digital signal after effect process is then converted into analog signal
It amplifies into audio amplifier circuit, finally plays amplified audio signal by loudspeaker out.
Specifically, audio frequency effect device includes Forlan brother effect device, Chorus, Phasing device, reverberation effect device, returns
Sound effective value device and Wah.Functional module can according to the user's choice to received microphone signal, music signal and
Instrument signal carries out corresponding effect process, and Forlan brother effect device, Chorus, Phasing device, reverberation effect device, returns
Sound effective value device and Wah etc. are built in functional module, that is, belong to the Function Extension of functional module, do not need to increase
Chip greatly simplifies circuit structure.
It further include the power module for power supply, the power module and functional module electricity in above embodiment
Road connection, is in normal operating conditions with assurance function module.
Specifically, power module is SY8120B DC-DC power source.
Further, bandpass filter is used to carry out undercut to instrument signal, height cuts processing.In present embodiment, pass through
Original signal can be more accurately restored after impedance matching, and received instrument signal is avoided to be distorted, decay.
The utility model by functional module can direct dialogue cylinder signal input interface, music signal input interface input
Signal is handled；And to the signal of instrument signal input interface input, after the impedance matching of impedance matching module, all the way
Signal directly inputs functional module and is handled, after another way signal cuts processing by bandpass filter undercut, height, using limit
Width diode input functional module；Finally treated instrument signal, microphone signal and audio signal are selected according to user
It selects to be output in loudspeaker after carrying out echo, reverberation and other effects processing and play.The utility model only need to by functional module this
One chip can carry out multi-effect processing and be controlled to a variety of audio signals of input, do not need to introduce MCU, simplify electricity
Cost is also reduced while road；And using the functional module in the utility model, also do not need again when Function Extension
It introduces chip or introduced multi-chip, greatly simplifie circuit.
The model of each electric elements, the internal circuit configuration and pin function of above-mentioned electric elements have been disclosed in the application
It can be consulted in shop instructions, those skilled in the art have the ability to establish between electric elements involved by the application completely
Circuit connecting relation.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. a kind of signal processing system suitable for musical instrument speaker, it is characterised in that: including microphone signal input interface JK1, sound
Music signal input interface JK2 and instrument signal input interface JK3, the microphone signal input interface JK1, music signal input connect
The signal of mouth JK2 directly inputs functional module, and the signal of the instrument signal input interface JK3 is inputted for carrying out impedance matching
Impedance matching module；The impedance matching module treated all the way signal directly input functional module, the impedance matching
Another way signal after resume module inputs the bandpass filter for screening signal frequency range, and treated for the bandpass filter
Signal passes through limiter diode input functional module, and microphone signal, music signal and instrument signal are defeated after functional module is handled
Enter into audio amplifier circuit, treated that audio signal is broadcast after audio amplifier circuit amplifies by loudspeaker for functional module
It puts.
2. the signal processing system according to claim 1 suitable for musical instrument speaker, it is characterised in that: the functional module
Including for converting analog signals into digital signal ADC, convert digital signals into analog signal DAC and audio effect
Fruit device, the functional module are AP8248.
3. the signal processing system according to claim 2 suitable for musical instrument speaker, it is characterised in that: the functional module
Signal is received by ADC, and the signal of functional module processing is converted to after analog signal by DAC to audio amplifier circuit.
4. the signal processing system according to claim 2 suitable for musical instrument speaker, it is characterised in that: the audio frequency effect
Device includes Forlan brother effect device, Chorus, Phasing device, reverberation effect device, Echo device and Wah.
5. the signal processing system according to claim 1 suitable for musical instrument speaker, it is characterised in that: further include for supplying
The power module of electricity, the power module are connect with the function module circuit.
6. the signal processing system according to claim 5 suitable for musical instrument speaker, it is characterised in that: the power module
For SY8120B DC-DC power source.
7. the signal processing system according to claim 1 suitable for musical instrument speaker, it is characterised in that: the bandpass filtering
Device carries out undercut to signal, height cuts processing.
8. the signal processing system according to claim 1 suitable for musical instrument speaker, it is characterised in that: the audio amplification
Circuit is TPA3112.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920262498.7U CN209419827U (en) | 2019-03-01 | 2019-03-01 | A kind of signal processing system suitable for musical instrument speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920262498.7U CN209419827U (en) | 2019-03-01 | 2019-03-01 | A kind of signal processing system suitable for musical instrument speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209419827U true CN209419827U (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920262498.7U Active CN209419827U (en) | 2019-03-01 | 2019-03-01 | A kind of signal processing system suitable for musical instrument speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209419827U (en) |
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2019
- 2019-03-01 CN CN201920262498.7U patent/CN209419827U/en active Active
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