CN204720157U - A kind of Instrument Digital signal processing apparatus based on wireless transmission - Google Patents
A kind of Instrument Digital signal processing apparatus based on wireless transmission Download PDFInfo
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- CN204720157U CN204720157U CN201520476444.2U CN201520476444U CN204720157U CN 204720157 U CN204720157 U CN 204720157U CN 201520476444 U CN201520476444 U CN 201520476444U CN 204720157 U CN204720157 U CN 204720157U
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Abstract
The utility model provides a kind of Instrument Digital signal processing apparatus based on wireless transmission, comprises intelligent terminal, wireless transmission circuit, central processing unit, midi signal treatment circuit; The input/output terminal of wireless transmission circuit and the input/output terminal wireless connections of intelligent terminal, the input/output terminal of wireless transmission circuit connects the input/output terminal of central processing unit, central processing unit is connected with the input/output terminal of midi signal treatment circuit by another input/output terminal, and the input/output terminal of midi signal treatment circuit is connected with the input/output terminal of external MIDI instrument.Instrument Digital signal processing apparatus based on wireless transmission of the present utility model carries out two paths of signals transmission.Adopt the built-in bluetooth module of bluetooth module and intelligent terminal to carry out framework and the cost that wireless transmission saves device, complete as device each several part provides stable 3.3V power supply by feed circuit, guarantee each several part normally works.Carried out the data interaction of intelligent terminal and external MIDI instrument by this device, realize intelligent interaction.
Description
Technical field
The utility model relates to signal processing technology field, particularly relates to a kind of Instrument Digital signal processing apparatus based on wireless transmission.
Background technology
As long as current midi data stream solves in a wired fashion.By special midi in or midi out interface, be sent to the usb mouth of computer end (pc or mac), also have now mobile terminal to turn OTG by usb and realize record, editor.Which kind of wireless technology no matter wireless transmission midi signal, adopt, and all will solve the real time problems in musical instrument use procedure, also do not occurring commercial midi wireless connections product in real time on the market at present.
Summary of the invention
The purpose of this utility model is the deficiency existed for prior art, provides a kind of Instrument Digital signal processing apparatus based on wireless transmission.
The technical scheme of this real utility model is achieved in that
Based on an Instrument Digital signal processing apparatus for wireless transmission, comprising:
Store the intelligent terminal of MIDI information;
Carry out the wireless transmission circuit of midi signal communication;
The mutual central processing unit of MIDI information data is carried out after MIDI current mode signal being converted to MIDI voltage mode signals;
Convert MIDI voltage mode signals to MIDI current mode signal and be transferred to external MIDI instrument, convert the MIDI current mode signal of external MIDI instrument to MIDI voltage mode signals and transfer to the midi signal treatment circuit of central processing unit;
The input/output terminal of described wireless transmission circuit and the input/output terminal wireless connections of intelligent terminal, the input/output terminal of wireless transmission circuit connects the input/output terminal of central processing unit, central processing unit is connected with the input/output terminal of midi signal treatment circuit by another input/output terminal, and the input/output terminal of midi signal treatment circuit is connected with the input/output terminal of external MIDI instrument.
Described wireless transmission circuit adopts bluetooth module, and the bluetooth module of Instrument Digital signal processing apparatus and the built-in bluetooth module of intelligent terminal carry out wireless telecommunications.
The described Instrument Digital signal processing apparatus based on wireless transmission, also comprise by 5V photovoltaic conversion for 3.3V be central processing unit, wireless transmission circuit, midi signal treatment circuit provide the feed circuit of power supply; The output terminal of feed circuit connects feeder ear, the feeder ear of central processing unit, the feeder ear of midi signal treatment circuit of wireless transmission circuit respectively.
Described intelligent terminal is store MIDI information and with the smart mobile phone of built Bluetooth module or PAD.
Described midi signal treatment circuit comprises:
The midi signal interface circuit of real-time reception MIDI current mode signal or MIDI voltage mode signals;
MIDI current mode signal is converted to MIDI voltage mode signals or MIDI voltage mode signals is converted to the midi signal change-over circuit of MIDI current mode signal;
One road input/output terminal of midi signal interface circuit connects external MIDI instrument, central processing unit respectively, and another road input/output terminal of midi signal interface circuit connects midi signal change-over circuit.
The beneficial effects of the utility model are:
Instrument Digital signal processing apparatus based on wireless transmission of the present utility model, carry out two paths of signals transmission: a road is that the MIDI information stored by intelligent terminal by wireless transmission method is read out, and converts MIDI current mode signal to voltage-type data and is transferred to external MIDI instrument; The MIDI current mode signal of another road real-time reception external MIDI instrument also transfers to central processing unit and converts MIDI current mode signal to voltage-type, and this MIDI information wireless is transferred to terminal intelligent mobile phone or PAD by central processing unit by serial ports by this MIDI information.Adopt the built-in bluetooth module of bluetooth module and intelligent terminal to carry out framework and the cost that wireless transmission saves device, complete as device each several part provides stable 3.3V power supply by feed circuit, guarantee each several part normally works.Carried out the data interaction of intelligent terminal and external MIDI instrument by this device, realize intelligent interaction, be user-friendly to.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the Instrument Digital signal processing apparatus structured flowchart based on wireless transmission of the utility model embodiment;
Fig. 2 is the Instrument Digital signal processing device circuits catenation principle figure based on wireless transmission of the utility model embodiment, wherein, and 1-central processing unit, 2-wireless transmission circuit, 3-MIDI signal processing circuit, 4-feed circuit, 3-1-MIDI signal interface circuit, 3-2-MIDI signaling conversion circuit;
Fig. 3 is the Instrument Digital signal processing apparatus course of work schematic diagram based on wireless transmission of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the circuit based on the Instrument Digital signal processing apparatus of wireless transmission connects as shown in Figure 2 a kind of Instrument Digital signal processing apparatus structure based on wireless transmission.
Instrument Digital signal processing apparatus based on wireless transmission specifically comprises:
Store the intelligent terminal of MIDI (Musical Instrument Digital Interface, MIDI) information;
Carry out the wireless transmission circuit 2 of midi signal communication;
The mutual central processing unit of MIDI information data 1 is carried out after MIDI current mode signal being converted to MIDI voltage mode signals;
Convert MIDI voltage mode signals to MIDI current mode signal and be transferred to external MIDI instrument, convert the MIDI current mode signal of external MIDI instrument to MIDI voltage mode signals and transfer to the midi signal treatment circuit 3 of central processing unit;
Based on the Instrument Digital signal processing apparatus of wireless transmission, also comprise by 5V photovoltaic conversion for 3.3V be central processing unit, wireless transmission circuit, midi signal treatment circuit provide the feed circuit 4 of power supply;
The input/output terminal of wireless transmission circuit 2 and the input/output terminal wireless connections of intelligent terminal, the input/output terminal of wireless transmission circuit 2 connects the input/output terminal of central processing unit 1, central processing unit 1 is connected with the input/output terminal of midi signal treatment circuit 3 by another input/output terminal, and the input/output terminal of midi signal treatment circuit 3 is connected with the input/output terminal of external MIDI instrument.
Intelligent terminal adopts smart mobile phone or PAD, central processing unit adopts STC15 series monolithic, wireless transmission circuit adopts bluetooth module HC-05, and the bluetooth module HC-05 of Instrument Digital signal processing apparatus and smart mobile phone or the built-in bluetooth module of PAD carry out wireless telecommunications.
Feed circuit specifically select AMS1117-3.3, and the output terminal of feed circuit connects the feeder ear of wireless transmission circuit, the feeder ear of central processing unit, the feeder ear of midi signal treatment circuit, respectively for they provide 3.3V power supply.
As shown in Figure 2, midi signal treatment circuit comprises:
The midi signal interface circuit 3-1 of real-time reception MIDI current mode signal or MIDI voltage mode signals;
MIDI current mode signal is converted to MIDI voltage mode signals or MIDI voltage mode signals is converted to the midi signal change-over circuit 3-2 of MIDI current mode signal;
The one road input/output terminal of midi signal interface circuit 3-1 connects external MIDI instrument, central processing unit respectively, and another road input/output terminal of midi signal interface circuit 3-1 connects midi signal change-over circuit 3-2.
As shown in Figure 3, the course of work based on the Instrument Digital signal processing apparatus of wireless transmission is as follows:
MIDI-a: the MIDI information in smart mobile phone or PAD, the bluetooth built-in by it is sent in bluetooth module.Then, this MIDI information is sent to central processing unit by bluetooth module by serial ports, and central processing unit converts MIDI current mode signal to voltage-type data after processing this MIDI information, continues to be sent in midi signal treatment circuit.This MIDI information, is changed into current mode by from voltage-type in midi signal treatment circuit, and exports on MIDIOut mouth.Finally, this MIDI information is sent in external perimysium reference MIDI equipment.
MIDI-b:MIDI signal processing circuit by the MIDI current signal in the MIDIIn mouth real-time reception external world, and sends central processing unit to after changing into voltage-type data.Afterwards, this MIDI information is sent to bluetooth module by central processing unit by serial ports.This MIDI information is sent to terminal intelligent mobile phone or PAD by bluetooth module again.
Claims (5)
1., based on an Instrument Digital signal processing apparatus for wireless transmission, it is characterized in that, comprising:
Store the intelligent terminal of MIDI information;
Carry out the wireless transmission circuit of midi signal communication;
The mutual central processing unit of MIDI information data is carried out after MIDI current mode signal being converted to MIDI voltage mode signals;
Convert MIDI voltage mode signals to MIDI current mode signal and be transferred to external MIDI instrument, convert the MIDI current mode signal of external MIDI instrument to MIDI voltage mode signals and transfer to the midi signal treatment circuit of central processing unit;
The input/output terminal of described wireless transmission circuit and the input/output terminal wireless connections of intelligent terminal, the input/output terminal of wireless transmission circuit connects the input/output terminal of central processing unit, central processing unit is connected with the input/output terminal of midi signal treatment circuit by another input/output terminal, and the input/output terminal of midi signal treatment circuit is connected with the input/output terminal of external MIDI instrument.
2. the Instrument Digital signal processing apparatus based on wireless transmission according to claim 1, it is characterized in that, described wireless transmission circuit adopts bluetooth module, and the bluetooth module of Instrument Digital signal processing apparatus and the built-in bluetooth module of intelligent terminal carry out wireless telecommunications.
3. the Instrument Digital signal processing apparatus based on wireless transmission according to claim 1, is characterized in that, also comprise by 5V photovoltaic conversion for 3.3V be central processing unit, wireless transmission circuit, midi signal treatment circuit provide the feed circuit of power supply; The output terminal of feed circuit connects feeder ear, the feeder ear of central processing unit, the feeder ear of midi signal treatment circuit of wireless transmission circuit respectively.
4. the Instrument Digital signal processing apparatus based on wireless transmission according to claim 1, is characterized in that, described intelligent terminal is store MIDI information and with the smart mobile phone of built Bluetooth module or PAD.
5. the Instrument Digital signal processing apparatus based on wireless transmission according to claim 1, is characterized in that, described midi signal treatment circuit comprises:
The midi signal interface circuit of real-time reception MIDI current mode signal or MIDI voltage mode signals;
MIDI current mode signal is converted to MIDI voltage mode signals or MIDI voltage mode signals is converted to the midi signal change-over circuit of MIDI current mode signal;
One road input/output terminal of midi signal interface circuit connects external MIDI instrument, central processing unit respectively, and another road input/output terminal of midi signal interface circuit connects midi signal change-over circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520476444.2U CN204720157U (en) | 2015-06-30 | 2015-06-30 | A kind of Instrument Digital signal processing apparatus based on wireless transmission |
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| CN201520476444.2U CN204720157U (en) | 2015-06-30 | 2015-06-30 | A kind of Instrument Digital signal processing apparatus based on wireless transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10311844B1 (en) | 2018-05-04 | 2019-06-04 | Peter T. Godart | Musical instrument recording system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10311844B1 (en) | 2018-05-04 | 2019-06-04 | Peter T. Godart | Musical instrument recording system |
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