阅读说明：本技术 一种立体筝码及应用立体筝码的古筝拾音装置 (Three-dimensional zither code and zither pickup device applying same ) 是由 张达林 于 2019-09-26 设计创作，主要内容包括：本发明公开一种立体筝码及应用立体筝码的古筝拾音装置。所述立体筝码包括：连接柱、第一底座和第二底座；第一底座设置在第二底座上；第一底座上设置有固定环,连接柱的底端穿过固定环与第二底座接触；连接柱的顶端设置有搁弦槽,搁弦槽用于支撑古筝琴弦；第二底座的下表面呈弧形,第二底座的下表面与古筝面板贴合。本发明中立体筝码通过第二底座放置在古筝面板上,第二底座的下表面为弧形,弧形的设计增强了立体筝码与古筝面板的贴合性,提升了立体筝码的平稳性。(The invention discloses a three-dimensional zither code and a zither sound pickup device applying the same. The three-dimensional zither code comprises: the device comprises a connecting column, a first base and a second base; the first base is arranged on the second base; the first base is provided with a fixing ring, and the bottom end of the connecting column penetrates through the fixing ring to be in contact with the second base; the top end of the connecting column is provided with a string placing groove which is used for supporting strings of the Chinese zither; the lower surface of second base is the arc, and the lower surface and the laminating of zither panel of second base. According to the invention, the three-dimensional Chinese zither code is placed on the Chinese zither panel through the second base, the lower surface of the second base is arc-shaped, the arc-shaped design enhances the laminating property of the three-dimensional Chinese zither code and the Chinese zither panel, and the stability of the three-dimensional Chinese zither code is improved.)

1. A three-dimensional zither code is characterized by comprising: the device comprises a connecting column, a first base and a second base;

the first base is arranged on the second base; a fixing ring is arranged on the first base, and the bottom end of the connecting column penetrates through the fixing ring to be in contact with the second base;

the top end of the connecting column is provided with a string placing groove, and the string placing groove is used for supporting strings of the Chinese zither;

the lower surface of second base is the arc, the lower surface and the laminating of zither panel of second base.

2. The stereoscopic kite code of claim 1, wherein said connecting column further comprises: a column block and a cylindrical connecting rod;

the body column block is fixed at the top end of the cylindrical connecting rod, and the string placing groove is formed in the body column block;

the bottom end of the cylindrical connecting rod penetrates through the fixing ring, and the bottom end of the cylindrical connecting rod is in contact with the second base.

3. The three-dimensional kite according to claim 1, wherein said first base further comprises a first leg, a second leg, a third leg, a first support column, a second support column, and a support table;

one end of the first supporting column and one end of the second supporting column are both connected with the supporting table; the other end of the first supporting column and the other end of the second supporting column are fixed on the second base;

the first support leg, the second support leg and the third support leg form a tripod structure, one end of the first support leg, one end of the second support leg and one end of the third support leg are all connected with the fixing ring, and the other end of the first support leg, the other end of the second support leg and the other end of the third support leg are all fixed on the upper surface of the support table; a first groove is formed in the rear side of the supporting table, and the first supporting leg, the second supporting leg and the third supporting leg support the fixing ring right above the first groove;

the bottom of spliced pole passes solid fixed ring with first recess, the bottom of spliced pole with the contact of second base.

4. The three-dimensional kite according to claim 3, wherein said second base comprises a recessed mounting platform and a bottom support;

the concave-shaped fixing table is fixed on the bottom support through two cuboid pillars which are parallel to each other; the lower surface of collet is the arc.

5. The three-dimensional kite code of claim 4, wherein said channel-shaped mounting platform comprises: the first fixing column, the second fixing column and the second groove are arranged in the groove;

the two bulges of the concave-shaped fixing platform are respectively a first fixing column and a second fixing column, and the second groove is positioned between the first fixing column and the second fixing column; the first fixing column is provided with a first fixing hole, the second fixing column is provided with a second fixing hole, and the bottom ends of the first supporting column and the second supporting column are respectively inserted into the first fixing hole and the second fixing hole.

6. The three-dimensional kite code of claim 3, wherein said first base further comprises a rubber ring;

the rubber ring is arranged on the inner side of the fixing ring, and the cylindrical connecting rod penetrates through the rubber ring.

7. The utility model provides an use zither pick-up device of three-dimensional zither sign indicating number which characterized in that, zither pick-up device includes: the system comprises a Chinese zither, a plurality of piezoelectric ceramic sensors, a multi-path ADC and a microcontroller;

the plurality of zither codes of the Chinese zither are all three-dimensional zither codes; the three-dimensional zither codes are placed on the faceplate of the zither, and the lower surfaces of the bottom supports of the three-dimensional zither codes are attached to the faceplate of the zither; the piezoelectric ceramic sensor is arranged in the second groove of the three-dimensional kite code, and the bottom end of the cylindrical connecting rod of the three-dimensional kite code is in contact with the piezoelectric ceramic sensor; the three-dimensional zither codes are used for supporting strings and transmitting stress generated by the vibration of the strings to the piezoelectric ceramic sensors;

the piezoelectric ceramic sensors are connected with the input ends of the multi-path ADC, and are used for generating analog electric signals and transmitting the analog electric signals to the multi-path ADC;

the output end of the multi-path ADC is connected with the microcontroller, and the multi-path ADC is used for converting an analog electric signal into a digital electric signal and transmitting the digital electric signal to the microcontroller;

the microcontroller is used for converting the frequency and the amplitude of the digital signals generated by the multipath ADC into musical performance instructions in a MIDI format or an OSC format.

8. The kite pickup device of claim 7, further comprising a plurality of first rubber pads;

the first rubber pads are placed on the piezoelectric ceramic sensors and are in contact with the bottom ends of the cylindrical connecting rods; and the first rubber pads are used for absorbing high-frequency vibration parts of strings of the Chinese zither.

9. The kite pickup device of claim 8, further comprising a plurality of second rubber pads;

and the second rubber pads are arranged between the Chinese zither panel and the lower surface of the bottom support of the three-dimensional Chinese zither code.

Technical Field

The invention relates to the field of sound pickup, in particular to a three-dimensional zither code and a zither sound pickup device applying the three-dimensional zither code.

Background

The zither is through the vibrations sound production of string, and the sound that the zither was sent is compound sound, and the string sound of different length is different, and the tone quality and the size of sound of zither are also different in the equidirectional, so when playing to the zither, hope to note down all characteristics of zither on any point, obtain the most perfect audio. The most common microphone pickup method is to record the playing of the koto by the microphone, and then perform multi-polyphonic fundamental frequency analysis according to the recording, which is time-consuming and low in accuracy, and cannot analyze the sounding of the koto in real time and make the koto into a multi-polyphonic electronic musical instrument.

Disclosure of Invention

The invention aims to provide a three-dimensional zither code and a zither sound pickup device applying the three-dimensional zither code, which output real-time playing of a zither musical instrument as a digital playing instruction and realize the conversion from the zither to a multi-polyphonic electronic musical instrument.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a three-dimensional zither code, which comprises: the device comprises a connecting column, a first base and a second base;

the first base is arranged on the second base; a fixing ring is arranged on the first base, and the bottom end of the connecting column penetrates through the fixing ring to be in contact with the second base;

the top end of the connecting column is provided with a string placing groove, and the string placing groove is used for supporting strings of the Chinese zither;

the lower surface of second base is the arc, the lower surface and the laminating of zither panel of second base.

Optionally, the connecting column further comprises: a column block and a cylindrical connecting rod;

the body column block is fixed at the top end of the cylindrical connecting rod, and the string placing groove is formed in the body column block;

the bottom end of the cylindrical connecting rod penetrates through the fixing ring, and the bottom end of the cylindrical connecting rod is in contact with the second base.

Optionally, the first base further includes a first supporting leg, a second supporting leg, a third supporting leg, a first supporting column, a second supporting column and a supporting table;

one end of the first supporting column and one end of the second supporting column are both connected with the supporting table; the other end of the first supporting column and the other end of the second supporting column are fixed on the second base;

the first support leg, the second support leg and the third support leg form a tripod structure, one end of the first support leg, one end of the second support leg and one end of the third support leg are all connected with the fixing ring, and the other end of the first support leg, the other end of the second support leg and the other end of the third support leg are all fixed on the upper surface of the support table; a first groove is formed in the rear side of the supporting table, and the first supporting leg, the second supporting leg and the third supporting leg support the fixing ring right above the first groove;

the bottom of spliced pole passes solid fixed ring with first recess, the bottom of spliced pole with the contact of second base.

Optionally, the second base includes a fixing table shaped like a Chinese character 'ao' and a bottom support;

the concave-shaped fixing table is fixed on the bottom support through two cuboid pillars which are parallel to each other; the lower surface of collet is the arc.

Optionally, the concave fixing table includes: the first fixing column, the second fixing column and the second groove are arranged in the groove;

the two bulges of the concave-shaped fixing platform are respectively a first fixing column and a second fixing column, and the second groove is positioned between the first fixing column and the second fixing column; the first fixing column is provided with a first fixing hole, the second fixing column is provided with a second fixing hole, and the bottom ends of the first supporting column and the second supporting column are respectively inserted into the first fixing hole and the second fixing hole.

Optionally, the first base further comprises a rubber ring;

the rubber ring is arranged on the inner side of the fixing ring, and the cylindrical connecting rod penetrates through the rubber ring.

Optionally, the zither sound pickup apparatus includes: the system comprises a Chinese zither, a plurality of piezoelectric ceramic sensors, a multi-path ADC and a microcontroller;

the plurality of zither codes of the Chinese zither are all three-dimensional zither codes; the three-dimensional zither codes are placed on the faceplate of the zither, and the lower surfaces of the bottom supports of the three-dimensional zither codes are attached to the faceplate of the zither; the piezoelectric ceramic sensor is arranged in the second groove of the three-dimensional kite code, and the bottom end of the cylindrical connecting rod of the three-dimensional kite code is in contact with the piezoelectric ceramic sensor; the three-dimensional zither codes are used for supporting strings and transmitting stress generated by the vibration of the strings to the piezoelectric ceramic sensors;

the piezoelectric ceramic sensors are connected with the input ends of the multi-path ADC, and are used for generating analog electric signals and transmitting the analog electric signals to the multi-path ADC;

the output end of the multi-path ADC is connected with the microcontroller, and the multi-path ADC is used for converting an analog electric signal into a digital electric signal and transmitting the digital electric signal to the microcontroller;

the microcontroller is used for converting the frequency and the amplitude of the digital signals generated by the multipath ADC into musical performance instructions in a MIDI format or an OSC format.

Optionally, the zither sound pickup device is characterized by further comprising a plurality of first rubber pads;

the first rubber pads are placed on the piezoelectric ceramic sensors and are in contact with the bottom ends of the cylindrical connecting rods; and the first rubber pads are used for absorbing high-frequency vibration parts of strings of the Chinese zither.

Optionally, the zither sound pickup device further comprises a plurality of second rubber pads;

and the second rubber pads are arranged between the Chinese zither panel and the lower surface of the bottom support of the three-dimensional Chinese zither code.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

according to the invention, the three-dimensional Chinese zither code is placed on the Chinese zither panel through the second base, the lower surface of the second base is arc-shaped, the arc-shaped design enhances the fitting property of the three-dimensional Chinese zither code and the Chinese zither panel, and the stability of the three-dimensional Chinese zither code is improved;

the invention replaces the herringbone zither codes of the zither with the three-dimensional zither codes, combines the piezoelectric ceramic sensor, the multi-channel ADC and the microcontroller, acquires the playing of the zither musical instrument in real time, converts the playing of the zither into digital playing instructions in real time, has high accuracy and integration degree, realizes the real-time analysis of the playing of the zither, and realizes the conversion from the zither to the multi-polyphonic electronic musical instrument.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a structural diagram of a three-dimensional zither code and a zither sound pickup device using the three-dimensional zither code according to an embodiment of the present invention;

FIG. 2 is a structural view of a connecting column;

FIG. 3 is a view showing the structure of the first base;

FIG. 4 is a view showing the construction of a second base;

FIG. 5 is a flow chart of an algorithm in the microcontroller;

description of the symbols: 1-a string placing groove, 2-a column block, 3-a cylindrical connecting rod, 4-a fixing ring, 5-a first support leg, 6-a second support leg, 7-a third support leg, 8-a support platform, 9-a first support column, 10-a second support column, 11-a concave-shaped fixed platform, 12-a second groove, 13-a first fixed hole, 14-a second fixed hole, 15-a first fixed column, 16-a second fixed column, 17-a cuboid support column, 18-a bottom support and 19-a first groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a three-dimensional zither code and a zither sound pickup device applying the three-dimensional zither code, which output real-time playing of a zither musical instrument as a digital playing instruction and realize the conversion from the zither to a multi-polyphonic electronic musical instrument.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, an embodiment of the present invention provides a three-dimensional zither code, including: a connecting column (shown in fig. 2), a first base (shown in fig. 3) and a second base (shown in fig. 4);

the first base is arranged on the second base; a fixing ring 4 is arranged on the first base, and the bottom end of the connecting column penetrates through the fixing ring 4 to be in contact with the second base;

the top end of the connecting column is provided with a string placing groove 1, and the string placing groove 1 is used for supporting strings of the Chinese zither;

the lower surface of second base is the arc, and the lower surface and the laminating of zither panel of second base.

The spliced pole still includes: a column block 2 and a cylindrical connecting rod 3; the body column block 2 is fixed at the top end of the cylindrical connecting rod 3, and the string placing groove 1 is arranged on the body column block 2; the bottom end of the cylindrical connecting rod 3 penetrates through the fixing ring 4, and the bottom end of the cylindrical connecting rod 3 is in contact with the second base.

The first base further comprises a first supporting leg 5, a second supporting leg 6, a third supporting leg 7, a first supporting column 9, a second supporting column 10, a supporting table 8 and a rubber ring; one end of the first supporting column 9 and one end of the second supporting column 10 are both connected with the supporting table 8; the other end of the first supporting column 9 and the other end of the second supporting column 10 are both fixed on the second base; the first support leg 5, the second support leg 6 and the third support leg 7 form a tripod structure, one end of the first support leg 5, one end of the second support leg 6 and one end of the third support leg 7 are all connected with the fixing ring 4, and the other end of the first support leg 5, the other end of the second support leg 6 and the other end of the third support leg 7 are all fixed on the upper surface of the support table 8; the rear side of the supporting platform 8 is provided with a first groove 19, and the first supporting leg 5, the second supporting leg 6 and the third supporting leg 7 support the fixing ring 4 right above the first groove 19; the rubber circle sets up in solid fixed ring 4's inboard, and cylindrical connecting rod 3 passes the rubber circle, gu be flexible connection between fixed ring 4 and the cylindrical connecting rod 3.

The bottom end of the connecting column passes through the fixing ring 4 and the first groove 19, and the bottom end of the connecting column is in contact with the second base.

The second base comprises a concave-shaped fixed table 11 and a bottom support 18; the concave-shaped fixed platform 11 is fixed on a bottom support 18 through two cuboid pillars 17 which are parallel to each other; the lower surface of the shoe 18 is arc-shaped; the concave fixing platform 11 comprises a first fixing column 15, a second fixing column 16 and a second groove 12; two bulges of the concave-shaped fixing platform 11 are respectively a first fixing column 15 and a second fixing column 16, and the second groove 12 is positioned between the first fixing column 15 and the second fixing column 16; first fixed orifices 13 are arranged on the first fixed column 15, second fixed orifices 14 are arranged on the second fixed column 16, and the bottom ends of the first supporting column 9 and the second supporting column 10 are respectively inserted into the first fixed orifices 13 and the second fixed orifices 14, so that relative movement between the first base and the second base in the horizontal direction is avoided.

The embodiment of the invention also provides a three-dimensional zither code and a zither sound pickup device applying the three-dimensional zither code, wherein the zither sound pickup device comprises: the system comprises a Chinese zither, a plurality of piezoelectric ceramic sensors, a multi-path ADC and a microcontroller;

a plurality of zither codes of the zither are all three-dimensional zither codes; the plurality of three-dimensional zither codes are placed on a panel of the zither, and the lower surfaces of the bottom supports 18 of the plurality of three-dimensional zither codes are attached to the panel of the zither; the piezoelectric ceramic sensor is arranged in the second groove 12 of the three-dimensional kite, and the bottom end of the cylindrical connecting rod 3 of the three-dimensional kite is in contact with the piezoelectric ceramic sensor; the three-dimensional zither code is used for supporting the strings and transmitting stress generated by the vibration of the strings to the plurality of piezoelectric ceramic sensors; the Chinese zither panel is taken as a horizontal plane reference direction, the cylindrical connecting rod 3 of the three-dimensional Chinese zither code can move up and down under the driving of the vibration of strings, and cannot move greatly in the front-back direction or the left-right direction.

When the string vibrates, the changed stress on the string is transmitted to the piezoelectric ceramic sensor through the connecting column, a corresponding electric signal is generated on the piezoelectric ceramic sensor, the frequency of the electric signal is consistent with the vibration frequency of the string, and the magnitude of the electric signal is in direct proportion to the vibration amplitude of the string; when a player presses the strings to play a sliding sound or a boeing, the piezoelectric ceramic sensor generates an electric signal which is consistent with the pressing frequency and is in direct proportion to the pressure change; the plurality of piezoelectric ceramic sensors are connected with the input end of the multi-path ADC, and the plurality of piezoelectric ceramic sensors are used for generating analog electric signals with the frequencies consistent with the vibration frequency of the strings and the amplitudes in direct proportion to the vibration amplitude of the strings and transmitting the analog electric signals to the multi-path ADC.

The output end of the multi-path ADC is connected with the microcontroller, and the multi-path ADC is used for converting the analog electric signal into a digital electric signal and transmitting the digital electric signal to the microcontroller; the microcontroller is configured to convert the frequency and amplitude of the Digital signal generated by the multi-channel ADC into music performance instructions in a MIDI (Musical Instrument Digital Interface) format or an Open Sound Control (OSC) format.

To implement the conversion of the frequency and amplitude of the digital signal generated by the multi-way ADC into musical performance instructions in the MIDI format or the OSC format, the following algorithm is executed in the microcontroller for each channel, as shown in fig. 5:

step 101: the voltage value of a small segment (e.g., 10-20 ms) is read from the ADC and buffered in the memory.

Step 201: the maximum absolute value of the fragment was determined and labeled vol.

Step 301: if vol is less than the set threshold, then mark the silence of the segment as true, otherwise:

step 3011: marking the silence of the segment as false;

step 3012: calculating the mean value of the digital signal segment, namely the DC offset value, and marking as mean _ val;

step 3013: the pitch of the segment buffer is calculated using the MPM (McLeodPitchMethod, mclaud pitch method) algorithm, denoted freq.

Step 401: if the mute of the current segment is true and the mute of the previous segment is false, a note end command is output.

Step 501: if the mute of the current segment is true and the mute of the previous segment is true, no instruction is output.

Step 601: if the mute of the current segment is false and the mute of the previous segment is true, then:

step 6011: outputting a 'note start' instruction;

step 6012: taking the value freq of the fundamental frequency of the segment as a parameter, and outputting a frequency updating command;

step 6013: taking the vol variable of the segment as a parameter, and outputting a force updating command;

step 6014: and (3) outputting a 'bending sound strength' instruction by taking the mean _ val variable of the segment as a parameter.

Step 701: if the silence of the current segment is false and the silence of the previous segment is false, then: step 6012 through step 6014 are repeated.

When the microcontroller executes an algorithm on the channel, sequentially processing (single core) or parallel processing (multi-core) according to the number of the cores of the microprocessor; the data processing of each channel is independent and independent of each other. If the data are processed in parallel, the microprocessor outputs the corresponding result immediately after the data of one channel are processed, but does not output the corresponding result after the data of other channels are processed.

The format of the instruction output may be binary MIDI data. The 'note ending' instruction, the 'note starting' instruction, the 'frequency updating' instruction, the 'strength updating' instruction and the 'bending strength' instruction are defined in the MIDI format; the format of the instruction output may also be the OSC format.

The zither sound pickup device also comprises a plurality of first rubber pads and a plurality of second rubber pads; the plurality of first rubber pads are placed on the piezoelectric ceramic sensor, the first rubber pads are in contact with the bottom end of the cylindrical connecting rod 3, and the plurality of first rubber pads are used for absorbing high-frequency vibration parts of strings of the Chinese zither; a plurality of second rubber pads are placed between the lower surface of the bottom support 18 of zither panel and three-dimensional zither sign indicating number, and a plurality of second rubber pads have played skid-proof effect.

The size of the three-dimensional Chinese zither code is determined by referring to the Chinese zither code and is changed sequentially; preferably, the height from the string placing groove 1 to the lower surface of the bottom support 18 is the same as the height from the top end groove to the bottommost position of the traditional Chinese zither with the corresponding serial number; through the height of two bulges of the cylindrical connecting rod 3, the first supporting column 9, the second supporting column 10 and the concave-shaped fixing platform 11 of the three-dimensional zither code, the overall height of the three-dimensional zither code is consistent with the height of the traditional zither code, and a user can replace the zither code on the spot conveniently.

The three-dimensional zither code provided by the embodiment of the invention is placed on the zither panel through the second base, the lower surface of the second base is arc-shaped, the arc-shaped design enhances the laminating property of the three-dimensional zither code and the zither panel, and the stability of the three-dimensional zither code is improved.

The embodiment of the invention also provides a Chinese zither sound pickup device applying the three-dimensional Chinese zither codes, wherein the Chinese zither 'herringbone' codes are replaced by the three-dimensional Chinese zither codes, the performances of Chinese zither musical instruments are acquired in real time by combining the piezoelectric ceramic sensor, the multi-path ADC and the microcontroller, the Chinese zither performances are converted into digital performance instructions in real time, the accuracy and the integration degree are high, the real-time analysis of the Chinese zither performances is realized, and the conversion from the Chinese zither to a multi-polyphonic electronic musical instrument is realized.

The Chinese zither pickup device applying the three-dimensional Chinese zither codes provided by the embodiment of the invention has a simple structure, does not need to greatly change the structure of the Chinese zither, can convert the Chinese zither into an electronic musical instrument by only replacing the Chinese zither codes and adding a small amount of electronic devices, and cannot damage the Chinese zither.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.