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Digital harmonica

A harmonica and digital technology, which is applied in the field of digital harmonica, can solve problems such as interference, inaccurate detection of digital harmonica playing information, single harmonica use environment, etc., and achieve the effect of accurate pitch and rich use environment

Pending Publication Date: 2020-08-28
蒲昊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a digital harmonica for the above existing problems; the present invention solves the problem that the digital harmonica cannot directly play music, and must cooperate with external equipment to produce sound; The problem of inaccurate detection; solves the problem that the digital harmonica cannot work normally in a dark environment; also solves the problem that the harmonica is used in a single environment and is easily disturbed by external environmental sounds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A digital harmonica such as figure 1 and figure 2 As shown, it includes: a body 1, a plurality of sound holes 2 are arranged on the body 1; a sensor 3 is arranged in the sound hole 2, and the sensor 3 is connected to a microprocessor 4; the microprocessor 4 is connected to the sensor 3 and the audio processor respectively 5 connections; the microprocessor 4 and the audio processor 5 are located in the body 1; the audio processor 5 is connected to the speaker 8, and the speaker 8 is located on the body 1; the number of the sensors 3 is several, and there is at least one in a sound hole 2 Sensor 3; Microprocessor 4 is used to receive and identify the information transmitted by sensor 3, and audio processor 5 is used to convert the received information into audio signal output; in the present embodiment, microprocessor 4 can be based on ARM Cortex- The microprocessor of M architecture, the audio processor is a digital audio processor, such as the CS48L10 ultra-low power ...

Embodiment 2

[0056] Embodiment 2 is similar in structure to Embodiment 1, and its difference is that the air inlet at the upper end of the sound hole 2 and the air outlet at the lower end are unequal in size, as Figure 8 shown.

[0057] The air outlet at the lower end of the sound hole 2 is smaller than the upper air inlet, and the upper end is the end that the lips hold when playing; the side wall of the sound hole 2 is provided with an air pressure sensor. When playing, the air outlet is smaller than the air inlet. , the air pressure in the entire sound hole 2 will increase; when inhaling, also because the air inlet at the lower end is smaller than the air outlet at the upper end, the whole air pressure in the sound hole 2 will decrease. Microprocessor 4 just can judge whether blowing or inhaling and the strength of blowing or inhaling by reading the air pressure value of the air pressure sensor in the sound hole like this

Embodiment 3

[0059] Embodiment 3 and Embodiment 1 are similar in structure to Embodiment 2, and the difference is that the sensor 3 is an airflow sensor, such as Figure 6 shown.

[0060] The airflow sensor is arranged at the bottom of the sound hole 2. In this embodiment, it can be fan-shaped; the airflow sensor senses the size of the player's airflow by measuring the airflow velocity passing through, and rotates under the action of the airflow by the impeller like the propeller To sense the airflow speed; the greater the flow velocity, the faster the rotation; when blowing, the blades rotate clockwise, and when inhaling, they rotate counterclockwise.

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Abstract

The invention discloses a digital harmonica. The digital harmonica comprises a body which is provided with a plurality of sound holes, sensors are arranged in the sound holes and are connected with amicroprocessor, the microprocessor is respectively connected with the sensor and an audio processor, the audio processor is connected with a loudspeaker, a plurality of the sensors are arranged, at least one sensor is arranged in one sound hole, the microprocessor is used for receiving and identifying information transmitted by the sensor, and the audio processor is used for converting the received information into an audio signal and outputting the audio signal. The sensors are arranged in all the sound holes, so that the playing information obtained by the microprocessor is more accurate, and the intonation of music played by the loudspeaker is more accurate, whether the harmonica is played or not is judged by directly sensing data such as airflow, air pressure and vibration generated bya playing behavior through the sensor, so that the harmonica can be used in various environments, and the use environment of the harmonica is richer.

Description

technical field [0001] The invention relates to the field of musical instruments, in particular to a digital harmonica. Background technique [0002] The harmonica is a small, easy-to-use instrument with a unique sound. For these reasons, the harmonica and harmonica music are widely spread around the world. However, the development of the harmonica has rarely been digitized and intelligentized, which limits the learning and performance of the harmonica. For example, practicing the harmonica at home may affect other people in the family. It is difficult to distinguish the specific situation of each person when learning to play the harmonica together in class. The harmonica music played is not convenient to record. The interference of environmental noise, large-scale performances can only be collected through a microphone and then amplified and played will also be interfered by other environmental noises. [0003] In the prior art, the photoresistor is used to judge whether...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10H3/16G10H1/00G10D7/14
CPCG10H3/16G10H1/0008G10D7/14
Inventor 蒲昊
Owner 蒲昊
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