Chord interaction method of intelligent guitar and intelligent guitar system

Abstract

The invention relates to the field of intelligent guitars, in particular to a chord interaction method of an intelligent guitar and an intelligent guitar system. When a single string in the single-tone module is detected to be triggered, playing a single tone or a decomposed chord corresponding to the current chord key, and controlling the LED module to lighten LEDs of the corresponding strings one by one according to a note time sequence; when it is detected that two adjacent strings belonging to the same group in the single-tone module are triggered in a preset time window, a column type chord is played, and the LED module is controlled to synchronously lighten the corresponding LEDs with the group as the unit. The chord is decomposed through single-string triggering and is lighted according to the LED time sequence, note dynamic guidance and physical string and note dynamic binding can be achieved, and the music playing efficiency is improved. According to the invention, the method supports the decomposition of any chord, and can effectively reduce the false triggering of a user, improve the playing accuracy, and facilitate the learning of a beginner through the synchronous cooperation of double-chord same-group scanning and grouped LEDs, and the synchronization of physical operation and lighting effect according to a time window and same-group detection scanning actions.

Description

Technical field:

[0001] The present invention relates to the technical field of smart guitars, and in particular to a smart guitar chord interaction method and a smart guitar system. Background technology:

[0002] Guitar is a stringed instrument that produces sound by plucking the strings. The "frets" in guitar are also called "positions" or "frets". They are the basic positions that allow the strings to produce sounds of different frequencies. When playing guitar, the performer presses different frets with one hand and plucks the strings with the other hand. The coordination of the two hands causes the strings to vibrate at different lengths, which in turn causes sounds of different frequencies to be produced. This is also the basic sound-producing principle of guitar. At present, smart guitar has become a popular choice for music lovers and guitar learners. Smart guitar is equipped with sensors The device and processor can realize functions such as music score display and playing rhythm control. Current smart musical instruments (such as electronic guitar, smart guzheng, etc.) generally adopt chord preset mode. However, this mode lacks a coordinated triggering mechanism between the single-tone module and the chord key. Users cannot trigger broken chords through a single string, nor can they trigger block chords through strumming. For example, the existing application number is "CN2012205349212" and the application name is "One-key chord system", which only discloses the triggering of pre-recorded chords through a single key, and cannot solve the problems of dynamic note mapping and real-time interaction. Summary of the invention:

[0003] The purpose of this invention is to address the shortcomings of the existing technology and provide a chord interaction method for intelligent musical instruments, which can realize dynamic note guidance, dynamic binding of physical strings and notes, support arbitrary chord decomposition, effectively adapt to complex arrangements, and improve performance effects.

[0004] In order to achieve the above objectives, the present invention provides a chord interaction method for an intelligent musical instrument, comprising:

[0005] S1: Detect the trigger status of the chord module;

[0006] S2: When a single string in the monophonic module is detected to be triggered, it plays the single note or broken chord corresponding to the current chord key, and controls the LED module to light up the LEDs of the corresponding strings one by one according to the note sequence;

[0007] S3: When it is detected that two adjacent strings belonging to the same group in the monophonic module are triggered within a preset time window, the block chord is played and the LED module is controlled to light up the corresponding LEDs synchronously in groups.

[0008] A further improvement to the above solution is that step S2 specifically includes the following steps:

[0009] S21: extracting a corresponding decomposed chord note sequence from a pre-stored chord library according to the currently triggered chord key;

[0010] S22: Mapping the note sequence to the physical string position of the single tone module;

[0011] S23: Play the audio of the current note;

[0012] S24: Light up the LED associated with the physical string mapped to the note;

[0013] S25: Keep the LED on until the note ends.

[0014] S26: Turn off the current LED before the next note is triggered.

[0015] A further improvement to the above solution is that the note sequence is synchronized with the performance rhythm, and the LED on / off switching time error is ≤50ms.

[0016] A further improvement to the above solution is that in step S25, if multiple notes are mapped to the same physical string, different notes are distinguished by changing the color or flashing frequency of the LED.

[0017] A further improvement to the above solution is that detecting that two strings in the single tone module are triggered within a preset time window includes the following steps:

[0018] S31: Real-time monitoring of the trigger signals of all strings of the single-tone module;

[0019] S32: If the difference between the trigger timestamps of the two strings is less than or equal to the preset time window, it is determined to be a valid sweep trigger;

[0020] S33: Verify that the two strings belong to the same predefined group, otherwise ignore the trigger event.

[0021] A further improvement to the above solution is that the preset time window has a value range of 50-1000ms and can be customized by the user.

[0022] A further improvement to the above solution is that the predefined grouping rule is: dividing the N strings into M groups according to their physical proximity, each group containing at least two strings, and the group mapping relationship is stored in a non-volatile memory.

[0023] A further improvement to the above solution is that the operation of playing the column chords and controlling the LEDs includes:

[0024] S41: Generate columnar chord audio according to the current chord key type and the number of activated groups;

[0025] S42: Identify the group number to which the triggered string belongs and mark it as an active group;

[0026] S43: Synchronously light up all LEDs in the group through the hardware control circuit;

[0027] S44: Keep the LED on until the chord playback ends.

[0028] A further improvement to the above scheme is that if multiple chords are triggered simultaneously, then:

[0029] Play the chords one by one in time sequence;

[0030] Light up the LEDs of the activated group one by one.

[0031] In another aspect, the present invention provides an intelligent guitar system, comprising:

[0032] a single-note module, containing multiple independently triggerable strings;

[0033] A chord module, comprising at least one chord trigger key;

[0034] Timer module: detects the time difference between double string triggering;

[0035] A control unit, configured to execute the method according to any one of claims 1 to 9;

[0036] LED modules are used to light up in response to commands from the control unit, with the same group of LEDs connected in parallel to the same control circuit;

[0037] The storage unit is used to store chord configuration data and chord group mapping table.

[0038] The beneficial effects of the present invention are as follows: the present invention provides a chord interaction method and an intelligent guitar system for detecting the triggering state of a chord module; when it is detected that a single string in a single-tone module is triggered, a single-tone or decomposed chord corresponding to the current chord key is played, and the LED module is controlled to light up the LEDs of the corresponding strings one by one according to the note sequence; when it is detected that two adjacent strings belonging to the same group in the single-tone module are triggered within a preset time window, a block chord is played, and the LED module is controlled to light up the corresponding LEDs synchronously in groups. The present invention triggers decomposed chords by a single string and lights them according to the LED sequence, which can realize dynamic note guidance, dynamic binding of physical strings and notes, support arbitrary chord decomposition, and at the same time can check the strumming action with the same group according to the time window. By combining the strumming of two strings in the same group with the synchronous coordination of the grouped LEDs, the physical operation and the light effect are synchronized, which can effectively reduce user mis-triggers, improve the accuracy of performance, and facilitate learning for beginners. Description of the drawings:

[0039] Figure 1 Flowchart of the present invention.

[0040] Figure 2 Schematic diagram of the structure of the smart guitar of the present invention.

[0041] Description of the accompanying drawings: . Specific implementation method:

[0042] The present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate the present invention and are not intended to limit the present invention. It should also be noted that for ease of description, the accompanying drawings only show parts relevant to the present invention rather than all structures.

[0043] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the steps as sequential processes, many of the steps can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the steps can be rearranged. A process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. A process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0044] like Figure 1 As shown, the present invention provides a chord interaction method for an intelligent musical instrument, comprising:

[0045] S1: Detect the trigger status of the chord module;

[0046] S2: When a single string in the monophonic module is detected to be triggered, it plays the single note or broken chord corresponding to the current chord key, and controls the LED module to light up the LEDs of the corresponding strings one by one according to the note sequence;

[0047] S3: When it is detected that two adjacent strings belonging to the same group in the monophonic module are triggered within a preset time window, the block chord is played and the LED module is controlled to light up the corresponding LEDs synchronously in groups.

[0048] By triggering the decomposition of chords through a single string and lighting up according to the LED timing, dynamic note guidance can be achieved, physical strings are dynamically bound to notes, and arbitrary chord decomposition can be supported. At the same time, the sweeping action can be checked with the same group according to the time window. By sweeping the same group of two strings and coordinating the group LEDs synchronously, the physical operation plus the light effect synchronization can effectively reduce user false triggering, improve the accuracy of performance, and facilitate learning for beginners.

[0049] Step S2 of the present invention specifically includes the following steps:

[0050] S21: extracting a corresponding decomposed chord note sequence from a pre-stored chord library according to the currently triggered chord key;

[0051] S22: Mapping the note sequence to the physical string position of the monophonic module;

[0052] S23: Play the audio of the current note;

[0053] S24: Light up the LED associated with the physical string mapped to the note;

[0054] S25: Keep the LED on until the note ends.

[0055] S26: Turn off the current LED before the next note is triggered.

[0056] Through dynamic mapping of notes to physical strings, the smart guitar can support multiple chord decomposition modes.

[0057] The note timing of the present invention is synchronized with the performance rhythm, and the LED lighting / extinguishing switching time error is ≤50ms.

[0058] In step S25 of the present invention, if multiple notes are mapped to the same physical string, different notes are distinguished by LED color changes or flashing frequencies. Specifically, a note-LED behavior mapping table can be established and stored in the flash. For example, C4 corresponds to the physical string S1, and the corresponding LED behavior pattern is recorded as blue constant light. E4 corresponds to the physical string S1, and the corresponding LED behavior pattern is recorded as green breathing. When the guitar plays a seventh chord, a single string indicates two notes in a time-sharing manner. The root note uses blue constant light and the seventh note uses green breathing. Alternatively, when practicing chord transposition, different high notes can be distinguished according to the light, which can significantly improve the chord composition recognition speed of beginners, facilitate beginners to learn guitar chords, and reduce the frequency of incorrect chords.

[0059] The present invention detects that two strings in a single tone module are triggered within a preset time window, comprising the following steps:

[0060] S31: Real-time monitoring of the trigger signals of all strings of the single-tone module;

[0061] S32: If the difference between the trigger timestamps of the two strings is less than or equal to the preset time window, it is determined to be a valid sweep trigger;

[0062] S33: Verify that the two strings belong to the same predefined group, otherwise ignore the trigger event.

[0063] Specifically, each string uses an independent piezoelectric sensor, which uses a 10-bit ADC sampling with a sampling rate of ≥1KHz to capture the string trigger analog signal in real time. Through a 32-bit hardware timer, the trigger moment is accurately recorded, and the group mapping table is pre-burned to the EEPROM to quickly verify that the two strings are in the same group. The query response time is ≤10μs. At the same time, the time window can be dynamically adjusted according to the user's playing habits, which can effectively improve the accuracy of strum recognition and reduce response delay.

[0064] Furthermore, the preset time window range is 50-1000ms, with a default value of 500ms, which can be customized by the user. 500ms covers the human strumming speed range and is in line with natural playing habits.

[0065] The predefined grouping rule is: divide N strings into M groups according to their physical proximity, with each group containing at least two strings. The group mapping relationship is stored in non-volatile memory. The grouping can be optimized based on the user's strumming history data. For example, if the user has high-frequency strumming in groups 1-2, the grouping optimization action is: merge into a super group (1, 2, 3, 4). If the user has never used string 6, it will be removed from the group to save resources. This can cope with different users' strumming methods and improve the practicality of the smart guitar.

[0066] The operation of playing the pillar chords and controlling the LEDs of the present invention includes:

[0067] S41: Generate columnar chord audio according to the current chord key type and the number of activated groups;

[0068] S42: Identify the group number to which the triggered string belongs and mark it as an active group;

[0069] S43: Synchronously light up all LEDs in the group through the hardware control circuit;

[0070] S44: Keep the LED on until the chord playback ends.

[0071] Specifically, audio generation can adopt a harmonic enhancement algorithm, LED maintains the flagship execution breathing effect, group parallel audio synthesis can effectively reduce the chord generation delay, and the activation group pool design can support multi-group parallel processing. At the same time, it can enrich the richness of chords and support multi-scene and multi-type music playing, which is easy to use.

[0072] Furthermore, if multiple chords are triggered simultaneously:

[0073] Play the chords one by one in time sequence;

[0074] By lighting up the LEDs of the activated groups one by one, users can change chords at any time by re-strumming, and superimpose overtones in real time to create different sound effects, effectively improving the performance.

[0075] In another aspect, the present invention provides an intelligent guitar system, comprising:

[0076] a single-note module, containing multiple independently triggerable strings;

[0077] A chord module, comprising at least one chord trigger key;

[0078] Timer module: detects the time difference between double string triggering;

[0079] A control unit, configured to execute any one of the methods of claims 1 to 9;

[0080] LED modules are used to light up in response to commands from the control unit, with the same group of LEDs connected in parallel to the same control circuit;

[0081] The storage unit is used to store chord configuration data and chord group mapping table.

[0082] Of course, the above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A chord interaction method for an intelligent musical instrument, characterized in that: include: S1: Detect the trigger status of the chord module; S2: When a single string in the monophonic module is detected to be triggered, it plays the single note or broken chord corresponding to the current chord key, and controls the LED module to light up the LEDs of the corresponding strings one by one according to the note sequence; S3: When it is detected that two adjacent strings belonging to the same group in the monophonic module are triggered within a preset time window, the block chord is played and the LED module is controlled to light up the corresponding LEDs synchronously in groups.

2. The chord interaction method of an intelligent musical instrument according to claim 1, characterized in that: The step S2 specifically includes the following steps: S21: extracting a corresponding decomposed chord note sequence from a pre-stored chord library according to the currently triggered chord key; S22: Mapping the note sequence to the physical string position of the single tone module; S23: Play the audio of the current note; S24: Light up the LED associated with the physical string mapped to the note; S25: Keep the LED on until the note ends. S26: Turn off the current LED before the next note is triggered.

3. The chord interaction method of an intelligent musical instrument according to claim 2, characterized in that: The note timing is synchronized with the playing rhythm, and the LED on / off switching time error is ≤50ms.

4. The chord interaction method of an intelligent musical instrument according to claim 1, characterized in that: In step S25, if multiple notes are mapped to the same physical string, different notes are distinguished by changing the color or flashing frequency of the LED.

5. The chord interaction method of an intelligent musical instrument according to claim 1, characterized in that: The detecting that two strings in the single tone module are triggered within a preset time window comprises the following steps: S31: Real-time monitoring of the trigger signals of all strings of the single-tone module; S32: If the difference between the trigger timestamps of the two strings is less than or equal to the preset time window, it is determined to be a valid sweep trigger; S33: Verify that the two strings belong to the same predefined group, otherwise ignore the trigger event.

6. The chord interaction method of an intelligent musical instrument according to claim 1, characterized in that: The preset time window ranges from 50 to 1000 ms and can be customized by the user.

7. The chord interaction method of an intelligent musical instrument according to claim 1, characterized in that: The predefined grouping rule is: N strings are divided into M groups according to their physical proximity, each group contains at least two strings, and the group mapping relationship is stored in a non-volatile memory.

8. The chord interaction method of an intelligent musical instrument according to claim 1, characterized in that: The operation of playing the column chord and controlling the LED includes: S41: Generate columnar chord audio according to the current chord key type and the number of activated groups; S42: Identify the group number to which the triggered string belongs and mark it as an active group; S43: Synchronously light up all LEDs in the group through the hardware control circuit; S44: Keep the LED on until the chord playback ends.

9. The chord interaction method of an intelligent musical instrument according to claim 8, characterized in that: If multiple chords are triggered simultaneously: Play the chords one by one in time sequence; Light up the LEDs of the activated group one by one.

10. An intelligent guitar system, characterized in that: Applying the method according to any one of claims 1 to 9, comprising: a single-note module, containing multiple independently triggerable strings; A chord module, comprising at least one chord trigger key; Timer module: detects the time difference between double string triggering; A control unit, configured to execute the method according to any one of claims 1 to 9; LED modules are used to light up in response to commands from the control unit, with the same group of LEDs connected in parallel to the same control circuit; The storage unit is used to store chord configuration data and chord group mapping table.

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