CN219716452U

CN219716452U - Musical instrument capable of recognizing voice

Info

Publication number: CN219716452U
Application number: CN202320275753.8U
Authority: CN
Inventors: 彭志坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-09-19
Anticipated expiration: 2033-02-21

Abstract

The utility model belongs to the technical field of musical instruments, and particularly relates to a musical instrument capable of recognizing voice, which comprises a shell, wherein a whistle nozzle is arranged at the front end of the shell, an electric control board is arranged in the shell, and the electric control board is provided with: the sound collection circuit is used for collecting whistle from humming to the whistle mouth and converting the whistle into an electric signal; the fundamental tone processing circuit converts a sine waveform in the electric signal into a rectangular wave and filters a noise signal; the microprocessor is used for receiving the sound signal output by the pitch processing circuit; and outputting the sound to the external sound through the audio output module. When the user hums, the lyrics in the song to be hummed are all converted into 'beep' words to hum to the whistle mouth, and the microprocessor outputs corresponding musical sounds according to the frequency and the intensity of the 'beep' sound, so that the user can play the corresponding music only by humming the song, and the interestingness is improved.

Description

Musical instrument capable of recognizing voice

Technical Field

The utility model belongs to the technical field of musical instruments, and particularly relates to a musical instrument capable of recognizing voice.

Background

Traditional musical instruments, whether wind, key, or string, require long-term practice of the instrument and learning of the music theory before a player can be proficient in playing the song. For example, an electronic organ, a player presses different keys, a loudspeaker can generate different musical sounds, and after long-time finger matching key exercise, the player can play songs.

At present, the electronic musical instrument in the prior art has various structures and functions, such as a mouthpiece of a musical instrument, an electronic mouth organ, an electric mouthpiece and a musical instrument are disclosed in the utility model patent with publication number CN218214638U, and for a mouthpiece of a musical instrument, the electronic mouth organ comprises: an air cavity arranged in the shell of the wind instrument; the air pressure sensor is arranged at the bottom of the air cavity and used for detecting air pressure change in the air cavity; the air inlet channel is arranged at the outer side of the air cavity, and when the air inlet channel is blown, the air cavity generates pressure change and is detected by the air pressure sensor; the air outlet is arranged on the air inlet channel and is configured to enable the air flow to enter from the air inlet channel and then be discharged to the air outlet, and the path of the air flow is changed.

Although the whistle can realize the whistle function, has the advantages of not producing breath holding feeling, improving comfort and not producing false sounding, the whistle still has the defect of simple electronic structure, and can be played after long-term exercise by a user if being used for playing music, thereby influencing interestingness.

Disclosure of Invention

The utility model aims to provide a musical instrument for recognizing voice, and aims to solve the technical problem that the musical instrument in the prior art affects interestingness due to structural limitation.

In order to achieve the above object, an embodiment of the present utility model provides a musical instrument for recognizing speech, including a casing, a whistle nozzle is provided at a front end of the casing, an electric control board is provided in the casing, and the electric control board is provided with:

the sound collection circuit is used for collecting whistle from humming to the whistle mouth and converting the whistle into an electric signal;

the fundamental tone processing circuit is connected with the sound acquisition circuit and is used for converting a sine waveform in the electric signal into a rectangular wave and filtering a noise signal to generate a sound signal;

a microprocessor connected to the pitch processing circuit and configured to receive the sound signal output via the pitch processing circuit;

and the audio output module is used for being connected with external sound equipment so that the microprocessor outputs musical sounds matched with the sound signals to the external sound equipment through the audio output module.

Optionally, the sound collecting circuit comprises a pickup circuit and an audio amplifying circuit, and the pickup circuit is used for collecting whistle from humming to the whistle mouth and converting the whistle into an electric signal; the audio amplifying circuit is connected with the pickup circuit and is used for amplifying the electric signal and outputting the electric signal to the pitch processing circuit.

Optionally, the pitch processing circuit includes a period detection circuit and a loudness extraction circuit, where the period detection circuit and the loudness extraction circuit are both connected to the audio amplifying circuit, and the period detection circuit and the loudness extraction circuit are both further connected to the microprocessor.

Optionally, a musical sound generation module and a recording storage module are arranged in the microprocessor.

Optionally, the audio signal processing device further comprises a wireless transmitting module, wherein the wireless transmitting module is connected with the audio output module, and is used for being connected with a wireless receiving module, and the wireless receiving module is connected with the external sound equipment.

Optionally, a key circuit is further included, and the key circuit is connected with the microprocessor.

Optionally, the key circuit includes a plurality of function keys, and each function key is connected with the microprocessor.

Optionally, the function keys are distributed on two sides of the shell.

Optionally, the electronic control board further comprises a power supply module, wherein the power supply module is connected with the microprocessor and is used for supplying power to the electronic control board.

Optionally, the power supply module includes a power supply battery, and the power supply battery is installed below the electric control board and supplies power to the electric control board.

Optionally, the power supply module further includes a charging interface, the charging interface is connected with the electric control board, and the charging interface penetrates through the shell and partially exposes the shell.

The above technical solutions in the musical instrument for recognizing speech provided by the embodiments of the present utility model have at least one of the following technical effects:

according to the utility model, the sound collection circuit, the pitch processing circuit, the microprocessor and the audio output module are arranged on the electric control board, so that whistle sounds from humming to the whistle mouth are collected through the sound collection circuit, and the whistle sounds are converted into electric signals; the pitch processing circuit converts the electrical signal into a sound signal; the microprocessor receives the sound signal output by the pitch processing circuit; the microprocessor outputs musical sounds matched with the sound signals to the external sound through the audio output module, and further, the microprocessor processes the sound signals to output corresponding musical sounds, when a user hums the song, the lyrics in the song to be hummed are changed into 'beep' words to hum to the whistle mouth, and the microprocessor outputs corresponding musical sounds according to the frequency and the intensity of the 'beep' sounds, so that the user can play the corresponding music only by humming the song, and the interestingness is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a speech recognition musical instrument according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of another view of a speech-recognized musical instrument according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a split structure of a musical instrument for recognizing speech according to an embodiment of the present utility model;

fig. 4 is a block diagram of a circuit structure on an electronic control board according to an embodiment of the present utility model;

FIG. 5 is a block diagram of an upper circuit of an electronic control board according to another embodiment of the present utility model;

FIG. 6 is a schematic illustration of a user using an electronic whistle instrument according to another embodiment of the present utility model;

FIG. 7 is a schematic flow chart of recording sampling according to another embodiment of the present utility model;

fig. 8 is a schematic flow chart of a beep song recognition according to another embodiment of the present utility model.

Wherein, each reference sign in the figure:

100. a musical instrument that recognizes speech; 110. a housing; 120. a whistle mouth; 200. an electric control board; 210. a sound collection circuit; 211. a sound pickup circuit; 212. an audio amplifying circuit; 220. a pitch processing circuit; 221. a cycle detection circuit; 222. a loudness extraction circuit; 230. a microprocessor; 240. an audio output module; 250. a wireless transmitting module; 260. a key circuit; 261. a function key; 270. a power supply module; 271. a power supply battery; 272. a charging interface; 410. a wireless receiving module; 420. and (5) an external sound.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, as shown in fig. 1 to 4, there is provided a musical instrument 100 for recognizing voice, comprising a housing 110, a whistle 120 is provided at a front end of the housing 110, an electronic control board 200 is provided in the housing 110, and a sound collecting circuit 210, a pitch processing circuit 220, a microprocessor 230 and an audio output module 240 are provided on the electronic control board 200.

The sound collection circuit 210 is used for collecting whistle from humming to the whistle nozzle 120 and converting the whistle into an electrical signal; the pitch processing circuit 220 is connected to the sound collecting circuit 210, and is configured to convert a sinusoidal waveform in the electrical signal into a rectangular wave, and filter a noise signal to generate a sound signal; the microprocessor 230 is connected to the pitch processing circuit 220 and is configured to receive the sound signal output via the pitch processing circuit 220; the audio output module 240 is configured to be connected to the external sound 420, so that the microprocessor 230 outputs musical sounds matched with the sound signals to the external sound 420 through the audio output module 240.

According to the utility model, the sound collection circuit 210, the pitch processing circuit 220, the microprocessor 230 and the audio output module 240 are arranged on the electric control board 200, so that whistle from hum to the whistle nozzle 120 is collected through the sound collection circuit 210, and the whistle is converted into an electric signal; the pitch processing circuit 220 converts the electrical signal into a sound signal; the microprocessor 230 receives the sound signal output via the pitch processing circuit 220; the microprocessor 230 outputs the musical sound matched with the sound signal to the external sound 420 through the audio output module 240, so as to realize the processing of the sound signal by the microprocessor 230, and output the corresponding musical sound, for example, when the user humms the song, the lyrics in the song to be hummed are all changed into 'beep' words to hum to the whistle mouth 120, and the microprocessor 230 outputs the corresponding musical sound according to the frequency and intensity of the 'beep' sound, so as to realize the playing of the corresponding music by only humming the song, thereby improving the interestingness.

In another embodiment of the present utility model, as shown in FIGS. 1-4, the sound collection circuit 210 comprises a pick-up circuit 211 and an audio amplification circuit 212, the pick-up circuit 211 is used for collecting whistle from humming to the whistle nozzle 120 and converting the whistle into an electrical signal; the audio amplifying circuit 212 is connected to the sound pickup circuit 211, and is configured to amplify the electric signal and output the amplified electric signal to the pitch processing circuit 220.

In this embodiment, the pick-up circuit 211 is a circuit composed of a microphone and a resistor, and its specific structure is set by those skilled in the art, or other modules or circuits capable of performing sound collection are adopted.

By the arrangement of the audio amplifying circuit 212, the picked weak audio is amplified, so that information such as loudness and pitch period can be conveniently detected.

In another embodiment of the present utility model, as shown in fig. 1-4, the pitch processing circuit 220 includes a period detection circuit 221 and a loudness extraction circuit 222, both the period detection circuit 221 and the loudness extraction circuit 222 are connected to the audio amplification circuit 212, and both the period detection circuit 221 and the loudness extraction circuit 222 are also connected to the microprocessor 230.

In the audio, the frequency of the fundamental tone is determined, and the fundamental tone frequency can be calculated according to the relation between the period and the frequency, so that the fundamental tone frequency can be calculated only by detecting the period, and moreover, the light or heavy of the sound of the dug song is the loudness, which determines the intensity of the sound and is proportional to the intensity of the musical tone. The period of the user's beep is thus acquired by setting the period detection circuit 221 while the loudness is acquired by the loudness extraction circuit 222.

In another embodiment of the present utility model, as shown in fig. 1-4, a musical sound generation module and a sound recording storage module are provided in the microprocessor 230. The recording storage module is used for storing the frequency and characteristic information of each musical scale of the beep recorded in advance by the user. In this embodiment, the musical sound generating module and the recording storage module are both internal structures of the microprocessor 230, and the present utility model is not specifically shown and described. In actual use, the appropriate microprocessor 230 is selected by one of ordinary skill in the art.

Musical sound is produced by a waveform with a certain frequency and amplitude, the frequency determines the level of the musical sound, the amplitude determines the volume, and the shape of the sound wave determines the tone color. Therefore, the musical tones with different musical scales and tone colors can be stored in the musical tone generating module in advance, or the musical tones with different musical instruments, different musical scales and different tone colors can be recorded, so that the microprocessor 230 can conveniently call in real time, and signals after the musical tones are generated are output outwards by the DAC pins of the microprocessor 230.

In another embodiment of the present utility model, as shown in fig. 5, the instrument 100 for recognizing voice further includes a wireless transmitting module 250, the wireless transmitting module 250 is connected to the audio output module 240, the wireless transmitting module 250 is used to connect to a wireless receiving module 410, and the wireless receiving module 410 is connected to the external sound 420. The wireless transmitting module 250 is used for transmitting the DAC audio signal of the microprocessor 230 outwards. The wireless receiving module 410 receives the audio signal of the wireless transmitting module 250 and is connected to the signal input terminal of the external sound 420.

In another embodiment of the present utility model, as shown in fig. 1-2, the speech recognition instrument 100 further includes a key circuit 260, the key circuit 260 being coupled to the microprocessor 230.

The key circuit 260 includes a plurality of function keys 261, and each of the function keys 261 is connected with the microprocessor 230.

The function keys 261 are distributed on both sides of the housing 110. Thus being convenient for the user to adjust. In specific use, the functions of each function key 261 may be preset, so that key information is sent to the microprocessor 230 through the function keys 261, and thus input information such as tone, pitch, volume or recording is adjusted.

In another embodiment of the present utility model, as shown in fig. 1-4, the speech recognition instrument 100 further includes a power supply module 270, wherein the power supply module 270 is connected to the microprocessor 230 and is used to supply power to the electronic control board 200. The entire speech recognition instrument 100 is powered by the power supply module 270.

In another embodiment of the present utility model, as shown in fig. 1-2, the power supply module 270 includes a power supply battery 271, and the power supply battery 271 is installed below the electronic control board 200 and supplies power to the electronic control board 200.

In another embodiment of the present utility model, as shown in fig. 1-2, the power module 270 further includes a charging interface 272, the charging interface 272 is connected to the electronic control board 200, and the charging interface 272 penetrates the housing 110 and partially exposes the housing 110.

The instrument 100 for recognizing speech according to the present utility model has previously recorded and sampled speech features before use, and can recognize and play beep song information when in use. The specific recording process is as follows:

first, as shown in fig. 1, 6 and 7, the user, when using the instrument 100 for recognizing a voice, orally takes the whistle 120, then presses the function key 261 having a recording function, beeps (beeps) the tone name of each musical scale from the lowest tone to the highest tone of the individual musical scale: beep (do), beep (re), beep (mi), beep (fa), beep (sol), beep (la), beep (si), and the like. And then recording and extracting the fundamental tone frequency and the characteristics corresponding to each singing name, storing the information of the fundamental tone frequency and the characteristics corresponding to each singing name, and releasing a recording key to finish recording and sampling work.

Further, in this embodiment, an electronic organ is taken as an example and compared with the list of the present utility model, the following table is provided:

the rhythm and melody of music played by the external sound equipment completely depend on the rhythm and melody humming of the user, and certainly, the music can be regulated by keys, and the microprocessor enables the music generation module to call the music with different pre-recorded timbres, such as piano sound, flute, urheen, electronic organ and the like; the microprocessor can also be used for matching the tone generating module with the tones with different tones through key adjustment, and the acoustic device can play the relative tones lower or higher than the humming sound of the user.

In use of the instrument 100 for recognizing speech according to the present utility model, as shown in fig. 8, the user beeps, and then the microprocessor 230 reads a frame of audio, for example, a frame of audio having a duration of 50 ms, extracts the pitch frequency and characteristic of the frame of audio, sequentially compares the extracted pitch frequency and characteristic with the pitch frequency and characteristic of each of the singing names sampled in advance, finds the closest pitch frequency and characteristic, determines the singing name of the humming song, and searches the musical sound corresponding to the singing name.

Then, the loudness information of the audio of the present frame is extracted, the maximum amplitude of each fundamental tone waveform in the audio of the present frame is detected through the ADC channel of the microprocessor 230, the musical tone corresponding to the singing name is searched, the amplitude of each fundamental wave is respectively corresponding to the volume value of the musical tone to be output, and finally, the musical tone of the present frame is output.

In addition, besides the "beep" sound, other sounds can be preset to make the user make other sounds and play.

It should be noted that, regarding the control method and the software processing procedure in the present utility model, which are mature and forming technologies in the prior art, it should be well known and understood by those skilled in the art, and the control procedure is not an important point of protection of the present utility model, so the present utility model is not specifically described.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a musical instrument of discernment pronunciation, includes the casing, the front end of casing is equipped with the whistle mouth, be equipped with the automatically controlled board in the casing, its characterized in that is equipped with on the automatically controlled board:

2. The instrument of claim 1 wherein the sound collection circuit comprises a pickup circuit and an audio amplification circuit, the pickup circuit for collecting whistle sounds from humming to the whistle mouth and converting the whistle sounds into electrical signals; the audio amplifying circuit is connected with the pickup circuit and is used for amplifying the electric signal and outputting the electric signal to the period detecting circuit and the loudness extracting circuit in the pitch processing circuit.

3. The instrument of claim 2, wherein the pitch processing circuit comprises a period detection circuit and a loudness extraction circuit, both connected to the audio amplification circuit, both connected to the microprocessor.

4. The instrument of claim 1, further comprising a wireless transmitting module coupled to the audio output module, the wireless transmitting module configured to couple to a wireless receiving module coupled to the external sound device.

5. The speech recognition musical instrument of any one of claims 1-4 further comprising a key circuit, the key circuit being connected to the microprocessor.

6. The speech recognition musical instrument of claim 5 wherein the key circuitry includes a plurality of function keys, each of the function keys being coupled to the microprocessor.

7. The speech recognition musical instrument of claim 6 wherein the function keys are distributed on both sides of the housing.

8. The speech recognition musical instrument of claim 7 further comprising a power module connected to the microprocessor and configured to power the electronic control board.

9. The speech recognition musical instrument of claim 8 wherein the power module includes a power battery mounted below the electronic control board and powering the electronic control board.

10. The instrument of claim 8, wherein the power module further comprises a charging interface, the charging interface being coupled to the electronic control board, the charging interface extending through the housing and partially exposing the housing.