CN214799883U - Single-chip hearing aid circuit - Google Patents
Single-chip hearing aid circuit Download PDFInfo
- Publication number
- CN214799883U CN214799883U CN202121481026.4U CN202121481026U CN214799883U CN 214799883 U CN214799883 U CN 214799883U CN 202121481026 U CN202121481026 U CN 202121481026U CN 214799883 U CN214799883 U CN 214799883U
- Authority
- CN
- China
- Prior art keywords
- hearing aid
- chip
- circuit
- digital
- power supply
- 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.)
- Active
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
A single-chip hearing aid circuit relates to the field of hearing aids. The microphone, the loudspeaker, the key and the potentiometer are respectively connected with the digital intelligent hearing aid chip. The microphone converts sound into an electric signal; the digital intelligent hearing aid chip carries out digital processing on the received electric signals, then carries out processing such as transformation, noise reduction, compression, feedback inhibition and the like on the digital signals, and finally converts the digital signals into audio signals; the loudspeaker restores the audio signal into sound; the button is used for switching the hearing aid mode, and the potentiometer is used for adjusting the volume of the hearing aid. The hearing aid circuit adopts an integrated circuit and a small number of peripheral devices, so that the circuit principle is simple, and the hearing aid circuit has the advantages of simplicity in operation and convenience in maintenance.
Description
Technical Field
The utility model relates to a audiphone field especially relates to a single-chip audiphone circuit.
Background
The hearing aids sold in the market mostly adopt more than two integrated circuits and a plurality of peripheral devices, the circuit principle is complex, the occupied area of the devices is large, and the processing difficulty is large.
SUMMERY OF THE UTILITY MODEL
In order to reduce circuit structure complicacy among the audiphone, peripheral components and parts are more, the great problem of the processing degree of difficulty, the utility model discloses a following technical scheme:
a single-chip hearing aid circuit comprises a direct-current power supply, a processing unit, a microphone M1, a loudspeaker M2, a potentiometer R1 and a key S1, wherein the direct-current power supply is used for supplying power to the processing unit, and the microphone M1, the loudspeaker M2, the key S1 and the potentiometer R1 are electrically connected with the processing unit respectively.
Specifically, the processing unit is a digital intelligent hearing aid chip U1 with model number JS 0820. The digital hearing aid chip can digitize the received electric signal, then transform, reduce noise, compress, feed back and restrain the digital signal, and finally convert the digital signal into audio signal. Therefore, the function of the hearing aid can be realized only by one digital intelligent hearing aid chip, the number of components in the circuit is reduced, the circuit content is simplified, the grounding is realized, and the safety is ensured.
Specifically, the output end of the microphone M1 is connected to the 5 pin of the digital intelligent hearing aid chip U1, the power supply end of the microphone M1 is connected to the power supply VCC, and the ground end of the microphone M1 is grounded. The microphone M1 is connected with the digital intelligent hearing aid chip U1, so that the sound is converted into an electric signal, and the electric signal is subjected to subsequent processing.
Specifically, two ends of the horn M2 are connected to pins 12 and 13 of the digital smart hearing aid chip U1, respectively. The loudspeaker M2 is connected with the digital intelligent hearing aid chip U1, and the audio signal is restored into sound through the loudspeaker M2. The function of playing sound is realized.
Specifically, one end of the key S1 is connected to the 24 pins of the digital intelligent hearing aid chip U1, and the other end is grounded; one end of the potentiometer R1 is connected with the 3 pins of the digital intelligent hearing aid chip U1, the other end of the potentiometer R1 is grounded, and the middle end of the potentiometer R1 is connected with the 6 pins of the digital intelligent hearing aid chip U1. The mode of the hearing aid is switched by the key S1, the volume of the hearing aid is adjusted by the potentiometer R1, and the switching of different modes and the adjustment of the volume are realized.
Specifically, the positive electrode of the dc power supply VBAT is connected to the 4 pin and the 15 pin of the digital intelligent hearing aid chip U1, and the negative electrode of the dc power supply is grounded.
The digital intelligent hearing aid chip U1 is internally provided with a booster circuit, generates a power supply VCC and outputs the VCC through a 2-pin of the digital intelligent hearing aid chip U1.
Specifically, be equipped with on the digital intelligent audiphone chip U1 and burn the mouth, burn and burn the mouth and include SDA end, SCL end, GND end, VCC end, SDA end with digital intelligent audiphone chip U1's 8 pins are connected, SCL end and digital intelligent audiphone chip U1's 9 pins, GND end ground, VCC end and power VCC are connected.
Specifically, the capacitor C1 and the capacitor C2 are further included; one end of the capacitor C1 is connected with the positive electrode VBAT of the direct-current power supply, and the other end is grounded; one end of the capacitor C2 is connected to the power source VCC, and the other end is grounded. Through the arrangement of the capacitor, the specific waveband frequency in the signal is filtered, and the interference of other signals is restrained and prevented.
The device has the following advantages: the hearing aid circuit adopts one integrated circuit and two external capacitor components for filtering, reduces the number of peripheral components, simplifies the circuit principle, realizes the functions of the hearing aid, and has the advantages of simple and safe operation, signal interference resistance and convenient maintenance.
Drawings
Fig. 1 is a schematic diagram of a single chip hearing aid circuit;
Detailed Description
The present invention will be further explained with reference to fig. 1.
A single chip hearing aid circuit comprises a direct current power supply, a processing unit, a microphone M1, a loudspeaker M2, a key S1 and a potentiometer R1.
The processing unit is a JS0820 digital intelligent hearing aid chip U1. The digital intelligent hearing aid chip carries out digital processing on the received electric signals, then carries out time domain-frequency domain conversion, hearing loss compensation noise reduction, compression, feedback inhibition and other processing on the digital signals, and finally converts the digital signals into audio signals. The microphone M1 is mainly used to convert sound into an electrical signal. The output end of the microphone M1 is connected with the 5-pin of the digital intelligent hearing aid chip U1, the power supply end of the microphone M1 is connected with the power supply VCC, and the grounding end of the microphone M1 is grounded. The speaker reproduces the audio signal as sound. The two ends of the horn M2 are respectively connected with the 12 and 13 pins of the digital intelligent hearing aid chip U1. The key S1 is used for switching modes, the modes comprise different types such as a normal mode, a noise reduction mode, an indoor mode and the like, one end of the key S1 is connected with a 24 pin of the digital intelligent hearing aid chip U1, and the other end of the key S1 is grounded. The potentiometer R1 is used for adjusting the volume of the hearing aid, the volume can be increased by rotating the potentiometer R1 in one direction, on the contrary, the volume can be decreased by rotating the potentiometer R1 in the other direction, one end of the potentiometer R1 is connected with a pin 3 of the digital intelligent hearing aid chip U1, the other end of the potentiometer R1 is grounded, and the middle end of the potentiometer R1 is connected with a pin 6 of the digital intelligent hearing aid chip U1. The direct current power supply is 1.4V and is used for supplying power. The positive pole of the direct current power supply VBAT is connected with the 4 pins and the 15 pins of the digital intelligent hearing aid chip U1, and the negative pole of the direct current power supply is grounded. The intelligent hearing aid chip U1 is internally provided with a booster circuit, a power supply VCC is generated, the power supply VCC is output through 2 pins of the digital intelligent hearing aid chip U1, and the size of the power supply VCC is 3.3V. The digital intelligent hearing aid chip U1 is provided with a burning port, the burning port comprises an SDA end, an SCL end, a GND end and a VCC end, the SDA end is connected with an 8 pin of the digital intelligent hearing aid chip U1, the SCL end is connected with a 9 pin of the digital intelligent hearing aid chip U1, the GND end is grounded, and the VCC end is connected with a power VCC. In order to suppress power supply ripples and prevent interference of other signals, a circuit is provided with a capacitor to perform filtering processing. The size of the capacitor C1 and the capacitor C2 is 10 μ F. The capacitor C1 is used for filtering the direct-current power supply, one end of the capacitor C1 is connected with the positive electrode VBAT of the direct-current power supply, and the other end of the capacitor C1 is grounded; the capacitor C2 filters the power supply VCC, one end of the capacitor C2 is connected with the power supply VCC, and the other end is grounded.
As can be seen from the above description, the device has the following advantages: the hearing aid circuit adopts one integrated circuit and two external capacitor components for filtering, so that the number of peripheral components is reduced, the circuit principle is simple, the function of the hearing aid is realized, and the hearing aid circuit has the advantages of simplicity in operation and convenience in maintenance.
It should be understood that the above detailed description of the present invention is only for illustrative purposes and is not limited to the technical solutions described in the embodiments of the present invention. It will be understood by those skilled in the art that the present invention may be modified and equivalents may be substituted to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (9)
1. A single-chip hearing aid circuit is characterized by comprising a direct-current power supply VBAT, a processing unit, a microphone M1, a loudspeaker M2, a key S1 and a potentiometer R1, wherein the direct-current power supply is used for supplying power to the processing unit, and the microphone M1, the loudspeaker M2, the key S1 and the potentiometer R1 are electrically connected with the processing unit respectively.
2. The single chip hearing aid circuit of claim 1, wherein the processing unit is a model JS0820 digital smart hearing aid chip U1.
3. The single chip hearing aid circuit of claim 2, wherein the output terminal of the microphone M1 is connected to the 5-pin of the digital smart hearing aid chip U1, the power terminal of the microphone M1 is connected to the power source VCC, and the ground terminal of the microphone M1 is connected to ground.
4. The single chip hearing aid circuit of claim 2, wherein two ends of the speaker M2 are connected to the 12 and 13 pins of the digital smart hearing aid chip U1, respectively.
5. The single chip hearing aid circuit according to claim 2, wherein one end of the key S1 is connected to the 24 pin of the digital smart hearing aid chip U1, the other end is grounded, one end of the potentiometer R1 is connected to the 3 pin of the digital smart hearing aid chip U1, the other end is grounded, and the middle end of the potentiometer R1 is connected to the 6 pin of the digital smart hearing aid chip U1.
6. The single chip hearing aid circuit of claim 2, wherein the positive terminal of the dc power supply VBAT is connected to the 4-pin, 15-pin terminal of the digital smart hearing aid chip U1, and the negative terminal of the dc power supply is connected to ground.
7. The single chip hearing aid circuit of claim 2, wherein the digital smart hearing aid chip U1 incorporates a boost circuit to generate a power VCC output via the 2 pin of the digital smart hearing aid chip U1.
8. The circuit of claim 2, wherein the digital hearing aid chip U1 is provided with a burning port, the burning port includes an SDA port, an SCL port, a GND port, and a VCC port, the SDA port is connected to the 8 pins of the digital hearing aid chip U1, the SCL port is connected to the 9 pins of the digital hearing aid chip U1, the GND port is connected to ground, and the VCC port is connected to a power VCC.
9. The single chip hearing aid circuit of claim 7 further comprising a capacitor C1 and a capacitor C2; one end of the capacitor C1 is connected with the positive electrode of the direct-current power supply VBAT, and the other end of the capacitor C1 is grounded; one end of the capacitor C2 is connected with the power supply VCC, and the other end of the capacitor C2 is grounded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121481026.4U CN214799883U (en) | 2021-06-30 | 2021-06-30 | Single-chip hearing aid circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121481026.4U CN214799883U (en) | 2021-06-30 | 2021-06-30 | Single-chip hearing aid circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214799883U true CN214799883U (en) | 2021-11-19 |
Family
ID=78715200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202121481026.4U Active CN214799883U (en) | 2021-06-30 | 2021-06-30 | Single-chip hearing aid circuit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214799883U (en) |
-
2021
- 2021-06-30 CN CN202121481026.4U patent/CN214799883U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110324759B (en) | Voice sound pickup circuit and device | |
CN209845280U (en) | Voice sound pickup circuit and device | |
CN214799883U (en) | Single-chip hearing aid circuit | |
CN215072979U (en) | Single-chip hearing aid circuit | |
CN205160743U (en) | Multi -functional osteoacusis bluetooth headset | |
CN109756195A (en) | From band spectrum modulation D-type audio power amplifier | |
CN206149466U (en) | Earphone circuit and earphone | |
CN203563181U (en) | Mobile terminal having KTS sound effect | |
CN203378020U (en) | Audio source device charging stereo | |
CN214799867U (en) | Echo processing circuit and audio device | |
CN207410482U (en) | A kind of earphone with outside speaker | |
CN107257517B (en) | Earphone integrating DAC and effect processing circuit | |
CN103414070B (en) | A kind of audio signal reception and switching device | |
CN209767811U (en) | sound box circuit structure started by knocking | |
CN103491487B (en) | A kind of frequency modulation anti-interference hidden earphone system | |
CN209201318U (en) | The vehicle-mounted balanced device of microphone | |
CN203734825U (en) | Audio signal processing circuit and audio playing device | |
CN201178491Y (en) | Micro loudspeaker apparatus integrating filter circuit and power regulation circuit | |
CN207009847U (en) | A kind of lighting Audio Data Lines | |
CN221670052U (en) | Audio return structure | |
CN216217510U (en) | Suspension type open earphone based on D-type power amplifier | |
CN211209893U (en) | USB digital earphone based on UV sensor | |
CN220798509U (en) | Bluetooth wireless variable-electricity-quantity charging precious earphone | |
CN214544787U (en) | Ear canal type electronic hearing aid | |
CN211063778U (en) | Audio playing circuit of network camera |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |