CN201387713Y - Device for measuring music pitch - Google Patents
Device for measuring music pitch Download PDFInfo
- Publication number
- CN201387713Y CN201387713Y CN200920106696U CN200920106696U CN201387713Y CN 201387713 Y CN201387713 Y CN 201387713Y CN 200920106696 U CN200920106696 U CN 200920106696U CN 200920106696 U CN200920106696 U CN 200920106696U CN 201387713 Y CN201387713 Y CN 201387713Y
- Authority
- CN
- China
- Prior art keywords
- music
- signal
- processing module
- signal processing
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model belongs to electronic measuring instruments applied in the field of music teaching and entertainment, particularly relates to a device for measuring music pitch, which is used for carrying out collection, conversion and music pitch measurement on signals of the music pitch. The device comprises a music signal detecting module, a music signal treating module, a music signal storing module, a centric signal treating module and a communication module. The device can be connected with main equipment such as a computer, teaching equipment, entertainment equipment and the like through a standard USB interface, so as to realize two-way transmission of data. A music pitch measuring instrument accepts instructions and parameters sent out by a USB communication unit, measures music according to the requirement of the main equipment and returns the measurement result back to the main equipment for further statistical analysis and graphics display.
Description
Technical field
The utility model belongs to the electronic measuring instrument in music teaching and entertainment field, relates in particular to a kind ofly to gather at the music pitch conversion and the high device of acoustic.
Background technology
Music is as an art discipline, and its teaching process has its singularity.Along with science and technology development, many modern science and technology constantly are applied to music field, for its composition, performance, music digitalizing processing, multimedia teaching, scientific research or the like field provides new technology, new equipment and new method, make the development of music reach unprecedented height and popularity.Yet the demand of quick and precisely measuring to music in the prior art is met far away, needs constantly to the developing of wider darker field.In the prior art, though a lot of new equipment function is different, the music measurement is most basic part, and the precision of measurement and speed directly influence the performance and the class of equipment.The equipment that has makes some originally good intention not reach the anticipation target because of measuring technique is not good enough, the equipment that has has strengthened trial-produce period and cost of products because of the complexity exploitation of measuring unit.
The inventor finds through years of researches, can not only reflect the accuracy in pitch that the interval mould is sung as the music sound and graph instrument, the accuracy in pitch that can also show each details in the whole melody performance process, and can further help problem on the customer analysis vocal technique, the function that realize sound and graph instrument must have the support of note height measuring instrument.Karaoke is amusement equipment very popular and that generally use for another example, but people also wish and can improve constantly in singing amusement.If a ready-made note height measuring instrument is arranged, existing karaoke equipment is done improvement slightly, just user's reality can be sung the accuracy in pitch curves overlapped demonstration of curve and standard, accuracy in pitch situation, the discovery of understanding oneself from the contrast directly perceived of curve need improved place, make existing entertainment way bring up to a new class.Therefore researching and developing a kind of instrument of measuring the music pitch all is crucial for carrying out degree of depth creation and music teaching.Simultaneously, also need as far as possible simplified equipment is reached effect and purpose easy to implement.
The utility model content
For addressing the above problem, the utility model provides a kind of instrument of measuring the music pitch.It is a kind of broad-spectrum note height measuring instrument.The utility model has solved the problems of the prior art, has reached higher technique effect.
The technical solution of the utility model is:
A kind of device of measuring the music pitch, described device comprises the music signal detecting module, music signal processing module, music signal memory module, central signal processing module and communication module;
Described music signal detecting module comprises the voice signal input circuit; Described music signal detecting module is connected with described central signal processing module by described music signal processing module, the instruction that described music signal detecting module sends according to the central signal processing module is imported described music signal processing module with the signal of gathering, and music signal is handled;
Described music signal memory module is connected with described central signal processing module, is used to store the music signal parameter;
Described central signal processing module is connected with described communication module, finishes the input of data-signal, output; The other end of described communication module is connected with computing machine, carries out exchanges data and obtains power supply;
Described central signal processing module is controlled described music signal detecting module and is carried out signals collecting, and music signal to be measured is imported described music signal processing module, and music signal is handled; Described central signal processing module is obtained the parameter that characterizes the music pitch by communication module, and stores in the described music signal memory module; Music signal to be measured after described central signal processing module is handled described music signal processing module is by calculating and be converted to the pitch data; And the pitch data that obtain are transferred to computing machine by communication module finish the measurement pitch.
Described music signal processing module comprises filtering circuit and comparer, and the music signal to be measured that the music signal processing module is advanced in described input is wave circuit after filtration, the filtering interfering ripple; And will become pulse signal from the analog-signal transitions of filtering circuit output by described comparer, import described central signal processing module.
The device of described measurement music pitch also comprises a signal amplification unit, and described signal amplification unit is connected with filtering circuit, be used for signal is amplified, and the signal after will amplifying is imported described music signal processing module.
Described signal amplification unit is general bipolar operational amplifier; Described signal amplification unit is used for the voice signal of music is transformed into electric signal and amplification, and the model that described bipolar operational amplifier adopts is LM324.
In order to finish the process that music signal is surveyed, comprise the voice signal input circuit, it comprises:
Described music signal detecting module comprises acoustic pickup, and described acoustic pickup is the high sensitivity electret mike, and model is: C2F9767-o1.
In the application of reality, described music signal memory module and central signal processing module are included in the single-chip microcomputer; Described single-chip microcomputer adopts AT89C52 or MEGA16 general single chip; The music signal memory module can directly be used the EEPROM and the SRAM of single-chip microcomputer inside, is used to store customer parameter and temporarily deposits repeatedly sampled result.The central signal processing module is the core of this device, it receives from the instruction of host computer and provides this to install all control signals that other modules need, handle music signal simultaneously, send to host computer by the USB mouth at last and process and display from the music signal memory module.
Comparer in the described music signal processing module is Schmidt's comparer.
Described communication module is made up of USB mouth special chip CH372 and USB mouth, and it is transferred to this device with the steering order of host computer, and the music signal after reception of this device and the processing is sent to host computer.
The utility model can link to each other with main equipments such as computing machine, teaching equipment, amusement equipment by the USB interface of standard, realizes the transmitted in both directions of data.The note height measuring instrument is accepted instruction and the parameter that main equipment sends by the USB communication unit, carries out music by the main equipment requirement and measures, and measurement result is returned to main equipment, for the further statistical study and the demonstration of drawing.
The utility model adopts the efficient filtering circuit to carry out the range gating, and the frequency measurement scope can contain the wideest piano 1～88 key of musical instrument midrange.
The utility model adopts a whole set of technology of voice signal input circuit, sound signal processing module, central signal processing module, high speed USB communication module, the measuring accuracy height, and very strong real-time is arranged.This accurate, real-time and continuous measurement data can be supported the real-time graph of music sound and graph instrument to show and satisfy multiple demands of applications.
The utility model is with music measurement standard commonly used, and as the transformational relation of twelve-tone equal temperament, standard pronunciation and frequency, the transformational relation of temperament curve and frequency etc. is stored in the system, supports the application of relevant speciality.
The utility model realizes that by communication unit the data double-way between central signal processing module and main equipment transmits, make sound pitch measuring instrument can satisfy some non-standard, non-common even personalized needs, for example use different music rule systems to be used for different tone marks, to adopt different standard pronunciations, to adopt multiple accuracy in pitch curve (temperament curve) or custom curve.
Description of drawings
Fig. 1 is the structured flowchart of the utility model device;
Fig. 2 is the implementation procedure method figure of the utility model device;
Fig. 3 is the structural representation of music signal detecting module in the utility model device
Fig. 4 is the circuit module synoptic diagram of the utility model device sound intermediate frequency signal processing module
Fig. 5 is music signal memory module and a central signal processing module connection diagram in the utility model device
Fig. 6 is a communication module circuit connection diagram in the utility model device
More than particular content in each width of cloth accompanying drawing will be illustrated in conjunction with following embodiment.
Embodiment
Fig. 1 is the structured flowchart of the utility model device;
A kind of device of measuring the music pitch, described device comprises the music signal detecting module, music signal processing module, music signal memory module, central signal processing module and communication module;
Described music signal detecting module comprises the voice signal input circuit; Described music signal detecting module is connected with described central signal processing module by described music signal processing module, the instruction that described music signal detecting module sends according to the central signal processing module is imported described music signal processing module with the signal of gathering, and music signal is handled;
Described music signal memory module is connected with described central signal processing module, is used to store the music signal parameter;
Described central signal processing module is connected with described communication module, finishes the input of data-signal, output; The other end of described communication module is connected with computing machine, carries out exchanges data and obtains power supply;
Described central signal processing module is controlled described music signal detecting module and is carried out signals collecting, and music signal to be measured is imported described music signal processing module, and music signal is handled; Described central signal processing module is obtained the parameter that characterizes the music pitch by communication module, and stores in the described music signal memory module; Music signal to be measured after described central signal processing module is handled described music signal processing module is by calculating and be converted to the pitch data; And the pitch data that obtain are transferred to computing machine by communication module finish the measurement pitch.
Fig. 2 is the implementation procedure method figure of the utility model device;
After note high measurement device starts, the central signal processing module is communicated with main equipment by the USB communication module, after communication is normal, sends command-request signal to main equipment, the central signal processing module is carried out measurement parameter initialization setting simultaneously, enters the order waiting status.
Send orders such as changing musical note, melody tone mark, adjustment standard pronunciation, change accuracy in pitch curve, change range scope, change measuring method as if main equipment, the central signal processing module is transferred corresponding module, revise parameter and new duty is set, and new data is write the music signal memory module.
If main equipment sends the beginning measuring command, the central signal processing module makes its range scope and measuring method output corresponding control signal by the main equipment requirement arrive the music signal processing module according to order start-up control signal circuit.
The music signal detecting module is converted to electric signal with note signal, delivers to the music signal processing module.
Described music signal processing unit comprises filtering circuit and comparer, and the music signal to be measured that the music signal processing unit is advanced in described input is wave circuit after filtration, the filtering interfering ripple; And will become pulse signal from the analog-signal transitions of filtering circuit output by described comparer, import described central signal processing unit.
The central signal processing module obtains fundamental frequency cycles to signals collecting and calculating.According to the desired musical note of main equipment, tone mark, standard pronunciation and accuracy in pitch curve modification calculating parameter, periodic quantity is converted into the pitch data of representing with sound level and cent.
The central signal processing module is sent USB communication module with the pitch data, is uploaded to main equipment after conversion.
The central signal processing module receives and handles input signal continuously and uploads main equipment, sends until main equipment and ceases and desist order.
Fig. 3 is the structural representation of music signal detecting module in the utility model device
In order to finish the process that music signal is surveyed, comprise the voice signal input circuit, it comprises: acoustic pickup and signal amplification unit.
Acoustic pickup is the high sensitivity electret mike, and model is: C2F9767-o1.And signal amplification unit adopts note amplifier, is general bipolar operational amplifier, adoptable model: LM324 etc.Enlargement factor is decided on pick-up sensitivity, and general desirable about 200.The note amplifier effect is that the voice signal with music is transformed into electric signal.
Fig. 4 is the circuit module synoptic diagram of music signal processing module in the utility model device
Described music signal processing module comprises filtering circuit and comparer, and the music signal to be measured that the music signal processing module is advanced in described input is wave circuit after filtration, the filtering interfering ripple; And will become pulse signal from the analog-signal transitions of filtering circuit output by described comparer, import described central signal processing module.
The signal amplification unit that described music signal processing module as shown in Figure 3 comprises, described signal amplification unit is connected with filtering circuit, be used for simulating signal is amplified, and the signal after will amplifying is imported described music signal processing module.
Described audio frequency low-pass filter adopts eight rank low-pass filter: MAX7400, the clock decision that its low pass bandwidth is provided by the central signal processing module, and this wave filter can filter higher hamonic wave and other noises of sound.Schmidt's comparer becomes pulse signal with the analog-signal transitions that wave filter comes out, and under the control of central signal processing module, deposits the music signal memory module in.
Fig. 5 is music signal memory module and a central signal processing module connection diagram in the utility model device.In the application of reality, music signal memory module and central signal processing module are included in the single-chip microcomputer.Single-chip microcomputer can adopt general single chips such as AT89C52 or MEGA16.The music signal memory module can directly be used the EEPROM and the SRAM of single-chip microcomputer inside, is used to store customer parameter and temporarily deposits repeatedly sampled result.The central signal processing module is the core of this device, it receives from the instruction of host computer and provides this to install all control signals that other modules need, handle music signal simultaneously, send to host computer by the USB mouth at last and process and display from the music signal memory module.
Fig. 6 is a communication module circuit connection diagram in the utility model device
Described communication module is made up of USB mouth special chip CH372 and USB mouth, and it is transferred to this device with the steering order of host computer, and the music signal after reception of this device and the processing is sent to host computer.
The utility model can link to each other with main equipments such as computing machine, teaching equipment, amusement equipment by the USB interface of standard, realizes the transmitted in both directions of data.The note height measuring instrument is accepted instruction and the parameter that main equipment sends by the USB communication unit, carries out music by the main equipment requirement and measures, and measurement result is returned to main equipment, for the further statistical study and the demonstration of drawing.
Claims (7)
1 one kinds of devices of measuring the music pitch is characterized in that: described device comprises the music signal detecting module, music signal processing module, music signal memory module, central signal processing module and communication module;
Described music signal detecting module comprises the voice signal input circuit; Described music signal detecting module is connected with described central signal processing module by described music signal processing module, the instruction that described music signal detecting module sends according to the central signal processing module is imported described music signal processing module with the signal of gathering, and music signal is handled;
Described music signal memory module is connected with described central signal processing module, is used to store customer parameter and music signal;
Described central signal processing module is connected with described communication module, finishes the input of data-signal, output; The other end of described communication module is connected with computing machine, carries out exchanges data and obtains power supply;
Described central signal processing module is controlled described music signal detecting module and is carried out signals collecting, and music signal to be measured is imported described music signal processing module, and music signal is handled; Described central signal processing module is obtained the parameter that characterizes the music pitch by communication module, and stores in the described music signal memory module; Music signal to be measured after described central signal processing module is handled described music signal processing module is by calculating and be converted to the pitch data; And the pitch data that obtain are transferred to computing machine by communication module finish the measurement pitch.
2 a kind of devices of measuring the music pitch according to claim 1 is characterized in that
Described music signal processing module comprises filtering circuit and comparer, and the music signal to be measured that the music signal processing module is advanced in described input is wave circuit after filtration, the filtering interfering ripple; And will become pulse signal from the analog-signal transitions of filtering circuit output by described comparer, import described central signal processing module.
3 a kind of devices of measuring the music pitch according to claim 1 and 2 is characterized in that
The device of described measurement music pitch also comprises a signal amplification unit, and described signal amplification unit is connected with filtering circuit, be used for signal is amplified, and the signal after will amplifying is imported described music signal processing module.
4 a kind of devices of measuring the music pitch according to claim 3 is characterized in that
Described signal amplification unit is general bipolar operational amplifier; Described signal amplification unit is used for the voice signal of music is transformed into electric signal and amplification, and the model that described bipolar operational amplifier adopts is LM324.
5 a kind of devices of measuring the music pitch according to claim 1 is characterized in that
Described music signal detecting module comprises acoustic pickup, and described acoustic pickup is the high sensitivity electret mike, and model is: C2F9767-ol.
6 a kind of devices of measuring the music pitch according to claim 1 and 2 is characterized in that
Described music signal memory module and central signal processing module are included in the single-chip microcomputer; Described single-chip microcomputer adopts AT89C52 or MEGA16 general single chip;
Comparer in the described music signal processing module is Schmidt's comparer.
7 a kind of devices of measuring the music pitch according to claim 1 is characterized in that
Described communication module is made up of USB mouth special chip CH372 and USB mouth, and it is transferred to this device with the steering order of host computer, and the music signal after reception of this device and the processing is sent to host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106696U CN201387713Y (en) | 2009-04-03 | 2009-04-03 | Device for measuring music pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106696U CN201387713Y (en) | 2009-04-03 | 2009-04-03 | Device for measuring music pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387713Y true CN201387713Y (en) | 2010-01-20 |
Family
ID=41580252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920106696U Expired - Fee Related CN201387713Y (en) | 2009-04-03 | 2009-04-03 | Device for measuring music pitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387713Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506997A (en) * | 2014-11-29 | 2015-04-08 | 惠州市天音乐器有限公司 | Pick-up device special for music ensemble |
-
2009
- 2009-04-03 CN CN200920106696U patent/CN201387713Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506997A (en) * | 2014-11-29 | 2015-04-08 | 惠州市天音乐器有限公司 | Pick-up device special for music ensemble |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106340286B (en) | Universal real-time musical instrument playing evaluation system | |
| CN107967827A (en) | A kind of music education exercise system and its method | |
| US8039723B2 (en) | Music processing system including device for converting guitar sounds to MIDI commands | |
| CN102103857B (en) | Singing scoring system | |
| WO2004072767A3 (en) | Audio reproduction apparatus, method, computer program | |
| CN206061141U (en) | A kind of acoustical testing system of wireless audio products | |
| KR20080027760A (en) | Stringed musical instrument device | |
| CN105469669A (en) | Auxiliary teaching device for sing | |
| EP3121808A3 (en) | System and method of modeling characteristics of a musical instrument | |
| CN103474082A (en) | Multi-microphone vocal accompaniment marking system and method thereof | |
| KR20160112202A (en) | Apparatus for Integrated Control of Musical Instrument Play Robots | |
| CN201387713Y (en) | Device for measuring music pitch | |
| CN105679296A (en) | Instrumental performance assessment method and device | |
| CN105051811A (en) | Voice processing device | |
| CN101223564A (en) | Frequency spectrum conversion to natural harmonic frequencies process | |
| CN203013236U (en) | Intonation practice accompaniment device | |
| CN201012085Y (en) | Digital type sphygmus wave signal generator | |
| CN201084288Y (en) | A tuning device for chord press way of guitar fingerplate chart demo | |
| CN206921463U (en) | A kind of keyboard instrument optical flame detector | |
| CN204791939U (en) | Automatic performance of piano acoustic control remembers voluntarily that pedigree all | |
| CN101903940A (en) | Systems and methods for improving the similarity of the output volume between audio players | |
| CN108847067A (en) | A kind of Aural-comprehension Training system | |
| CN2607561Y (en) | Interface plate for simulated sensor | |
| CN209822276U (en) | Automatic metrological verification system of audio analysis instrument | |
| US10482858B2 (en) | Generation and transmission of musical performance data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20120403 |