A microphone system of an integrated sound card and a use method

Abstract

The application relates to a microphone system of an integrated sound card, which comprises a DSP control module, a first sound pickup module for acquiring user sound information, a first ADC module for performing analog-digital conversion on the user sound information to obtain a first signal, a second sound pickup module for acquiring background sound information of a current environment, a preamplification circuit module for amplifying the background sound information, a second ADC module for performing analog-digital conversion on the amplified background sound information to obtain a second signal, a DAC module for performing digital-analog conversion on the sound information to obtain a spk_out signal, and a sound card module which stores environmental sound effects and is used for adding the environmental sound effects to the spk_out signal when a user needs to trigger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent electrical appliances, in particular to a microphone system of an integrated sound card and a use method. BACKGROUND

[0002] With the development of society, entertainment activities are increasingly diversified. As a popular project of team building and family gatherings, the demand of people for KTV is also increasing, and the requirements of people for KTV systems are also increasing.

[0003] Traditional KTV systems often have relatively single functions, and can only meet the function of ordering and recording singing, but when people sing KTV for team building or friend gathering, because of the large number of people, on the one hand, the environment is relatively noisy, and on the other hand, only the monotonous ordering and recording function can not improve the interest of users in KTV. SUMMARY

[0004] To at least solve one of the defects in the prior art, the purpose of the present application is to provide a microphone system of an integrated sound card.

[0005] The technical scheme adopted by the present application to solve the problem is: a microphone system of an integrated sound card, comprising:

[0006] a DSP control module;

[0007] a first sound pickup module for obtaining user voice information;

[0008] a first ADC module, the input end of which is connected with the signal output end of the first sound pickup module, for performing analog-to-digital conversion on the user voice information to obtain a first signal, and the output end of which is connected with the DSP control module;

[0009] a second sound pickup module for obtaining background voice information of the current environment;

[0010] a preamplifier circuit module connected with the second sound pickup module for amplifying the background voice information;

[0011] a second ADC module, the input end of which is connected with the signal output end of the preamplifier circuit module, for performing analog-to-digital conversion on the amplified background voice information to obtain a second signal, and the output end of which is connected with the DSP control module;

[0012] a DAC module, the input end of which is connected with the DSP control module, for receiving voice information processed by the DSP control module from the first signal and the second signal, and performing digital-to-analog conversion on the voice information to obtain a spk_out signal;

[0013] A volume adjustment module, comprising a first control I / O port for volume adjustment, connected with the DSP control module, for obtaining a user's volume adjustment request and informing the DSP control module to respond;

[0014] A sound card module, integrated in the DSP control module, storing environmental sound effects, for adding the environmental sound effects to the spk_out signal when triggered by the user;

[0015] A power module, for powering the entire microphone system.

[0016] Further, specifically, the preamplification circuit module comprises a circuit formed based on a MAX9812 chip, specifically comprising,

[0017] The second pickup module is connected with one end of a second capacitor C2, one end of a first resistor R1, and a GND pin of the MAX9812 chip, respectively, the other end of the second capacitor C2 is connected with an IN pin of the MAX9812 chip, the other end of the first resistor R1 is connected with a BIAS pin of the MAX9812 chip, a VCC pin of the MAX9812 chip is connected with a power supply VCC, and an OUT pin of the MAX9812 chip outputs the amplified background sound information. The pins are used for controlling the running state of the circuit.

[0018] Further, the system further comprises a prompt module, which is used for prompting each operation request of the user, specifically, the prompt module comprises a buzzer-related circuit,

[0019] The buzzer-related circuit specifically comprises,

[0020] One end of a resistor RP2 connected with a BEEP pin of the DSP control module, the other end of the resistor RP2 is connected with a base B of a triode Q3, an emitter E of the triode Q3 is grounded, a collector of the triode Q3 is connected with one end of a buzzer LS1, the other end of the buzzer LS1 is connected with one end of a resistor RP1, and the other end of the resistor RP1 is connected with a power supply.

[0021] Further, the system further comprises an interface module, which comprises a USB interface, a UART interface, and a SHI interface.

[0022] Further, the system further comprises a speaker switching module, specifically, the speaker switching module is an earpiece / speaker control I / O port, when the speaker switching module is placed in the earpiece, no external sound is played, and when the speaker switching module is placed in the speaker, external sound is played.

[0023] Furthermore, specifically, the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are 0.1μF, and the resistance value of the first resistor R1 is 2.2kΩ.

[0024] Furthermore, specifically, the transistor Q3 is model S8050, the resistor RP1 has a resistance of 100Ω, and the resistor RP2 has a resistance of 1KΩ.

[0025] Furthermore, specifically, the DSP control module includes related circuitry based on the FM1182.

[0026] The present invention also proposes a method for using an integrated sound card microphone system, including step S100: powering on the entire microphone system and adjusting the parameters to the working state to acquire user voice information and background sound information;

[0027] Step S200: Obtain the user's selection The state of the pin, when When the pin is in the power-on state, the preamplifier circuit module is powered on but not working. The background sound information collected by the second pickup module is directly sent to the DSP control module. When the pin is grounded, the circuit is in the off state, and the background sound information collected by the second pickup module cannot be transmitted to the DSP control module. When the pin is connected to a high level, the preamplifier circuit module is powered on and working. The background sound information collected by the second pickup module is amplified by the preamplifier circuit module to obtain a second signal, which is then sent to the DSP control module.

[0028] Obtain the user's volume adjustment request and sound card effect selection. Determine the volume of the final output spk_out signal based on the user's volume adjustment request, and select the type of pre-stored ambient sound effect to output based on the user's sound card effect.

[0029] The beneficial effects of this invention are as follows: It provides a microphone system with an integrated sound card, which, on the one hand, simultaneously collects user voice information and background sound information and inputs them into the DSP control module to output sound information with low noise; on the other hand, it integrates and sets the sound card module and simultaneously plays pre-stored ambient sound effects, such as applause, in the sound card module according to the user's selection, so as to improve the user's karaoke atmosphere. Attached Figure Description

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described in the following. Obviously, the described drawings are only part of the embodiments of the present application, not all the embodiments, and the person skilled in the art can also obtain other design schemes and drawings according to these drawings without creative labor.

[0031] Figure 1 The structure principle block diagram of a four-in-one K song system of a microphone system of an integrated sound card of the present application is shown.

[0032] Figure 2 The structure principle block diagram of a preamplifier circuit module of a four-in-one K song system of a microphone system of an integrated sound card of the present application is shown.

[0033] Figure 3 The circuit principle diagram of a buzzer related circuit of a microphone system of an integrated sound card of the present application is shown. DETAILED DESCRIPTION

[0034] The concept, specific structure and generated technical effects of the present application will be clearly and completely described in the following by combining with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, and the person skilled in the art can obtain other embodiments based on the embodiments of the present application without creative labor, which all belong to the protection scope of the present application. In addition, all the connection relations mentioned in the text are not single direct connection of elements, but can be composed of a more optimal circuit structure by adding or reducing connecting elements according to the specific implementation situation. The technical features in the present application can be combined interactively without conflict.

[0035] REFERENCE Figure 1 , Embodiment 1, a microphone system of an integrated sound card, comprising:

[0036] a DSP control module;

[0037] a first pickup module for acquiring user voice information;

[0038] a first ADC module, the input end of which is connected with the signal output end of the first pickup module, for performing analog-digital conversion on the user voice information to obtain a first signal, and the output end of which is connected with the DSP control module;

[0039] a second pickup module for acquiring background voice information of the current environment;

[0040] a preamplifier circuit module connected with the second pickup module for amplifying the background voice information;

[0041] a second ADC module, an input end of which is connected with a signal output end of the pre-amplification circuit module, for performing analog-digital conversion on the amplified background sound information to obtain a second signal, and an output end of which is connected with the DSP control module;

[0042] a DAC module, an input end of which is connected with the DSP control module, for receiving sound information processed by the DSP control module on the first signal and the second signal, and performing digital-analog conversion on the sound information to obtain a spk_out signal;

[0043] a volume adjustment module, including a first control I / O port for volume adjustment, connected with the DSP control module, for obtaining a volume adjustment request of a user and informing the DSP control module to respond;

[0044] a sound card module, integrated at the DSP control module, storing environmental sound effects, for adding the environmental sound effects to the spk_out signal when triggered by the user;

[0045] a power module, for supplying power to the whole microphone system.

[0046] In the embodiment 1, the microphone system with integrated sound card is provided, on one hand, by simultaneously collecting user sound information and background sound information and inputting them into the DSP control module, outputting sound information with lower noise; on the other hand, by integrating the sound card module and simultaneously playing the pre-stored environmental sound effects in the sound card module according to the user's selection, such as applause, to improve the K-song atmosphere of the user.

[0047] Reference Figure 2 As a preferred embodiment of the present application, specifically, the pre-amplification circuit module includes a circuit formed based on a MAX9812 chip, specifically including,

[0048] The second pickup module is connected with one end of a second capacitor C2, one end of a first resistor R1 and a GND pin of the MAX9812 chip, respectively, another end of the second capacitor C2 is connected with an IN pin of the MAX9812 chip, another end of the first resistor R1 is connected with a BIAS pin of the MAX9812 chip, a VCC pin of the MAX9812 chip is connected with a power supply VCC, an OUT pin of the MAX9812 chip outputs the amplified background sound information, and a pin of the MAX9812 chip is used for controlling the running state of the circuit.

[0049] As a preferred embodiment of the present application, the system further includes a prompt module, the prompt module is used for prompting each operation request of the user, specifically, the prompt module includes a buzzer related circuit,

[0050] Referring to Figure 3 , the buzzer-related circuit specifically comprises,

[0051] One end of a resistor RP2 connected with the BEEP pin of the DSP control module, the other end of the resistor RP2 connected with the base B of a transistor Q3, the emitter E of the transistor Q3 grounded, the collector of the transistor Q3 connected with one end of a buzzer LS1, the other end of the buzzer LS1 connected with one end of a resistor RP1, the other end of the resistor RP1 connected with a power supply.

[0052] As a preferred embodiment of the present application, the system further comprises an interface module, which comprises a USB interface, a UART interface and a SHI interface.

[0053] As a preferred embodiment of the present application, the system further comprises a speaker switching module, specifically, the speaker switching module is an earpiece / speaker control I / O port, when the speaker switching module is placed in the earpiece, no external sound is played, and when the speaker switching module is placed in the speaker, external sound is played.

[0054] As a preferred embodiment of the present application, specifically, the capacitance values of the first capacitor C1 and the second capacitor C2 are 0.1 μF, and the resistance value of the first resistor R1 is 2.2 kΩ.

[0055] As a preferred embodiment of the present application, specifically, the model of the transistor Q3 is S8050, the resistance value of the resistor RP1 is 100 Ω, and the resistance value of the resistor RP2 is 1 kΩ.

[0056] As a preferred embodiment of the present application, specifically, the DSP control module comprises a related circuit formed based on an FM1182.

[0057] In the present embodiment 2, the present application further provides a use method of the microphone system of the integrated sound card, comprising,

[0058] Step S100, power on the entire microphone system, and adjust parameters to a working state, acquire user voice information and background voice information;

[0059] Step S200, acquire the state of the pin selected by the user When the pin state is connected to the power supply, the preamplifier circuit module is powered on but not working, and the background voice information collected by the second pickup module is directly delivered to the DSP control module. When the pin state is connected to the power supply, the preamplifier circuit module is powered on but not working, and the background voice information collected by the second pickup module is directly delivered to the DSP control module. When the pin state is ground, the circuit is in the closed state, and the background sound information collected by the second pickup module cannot be transmitted to the DSP control module. When the pin state is high, the preamplifier circuit module is powered on and works, and the background sound information collected by the second pickup module is amplified by the preamplifier circuit module and then transmitted to the DSP control module as a second signal.

[0060] The volume adjustment request of the user and the sound card effect selection are obtained, the volume of the final output spk_out signal is determined according to the volume adjustment request of the user, and the type of the pre-stored environmental sound effect is output according to the sound card effect selection of the user.

[0061] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A method of using a microphone system of an integrated sound card, characterized in that, The application relates to a microphone system applied to an integrated sound card, and the method comprises the following steps, Step S100: the whole microphone system is powered on, parameters are adjusted to a working state, user voice information and background voice information are acquired; Step S200, acquiring user selection When the pin state is connected to the power supply, the preamplifier circuit module is powered on but not working, and the background sound information collected by the second pickup module is directly transmitted to the DSP control module. When the pin state is connected to the ground, the circuit is in the closed state, and the background sound information collected by the second pickup module cannot be transmitted to the DSP control module. When the pin state is connected to the ground, the circuit is in the closed state, and the background sound information collected by the second pickup module cannot be transmitted to the DSP control module. When the pin state is connected to the high level, the preamplifier circuit module is powered on and works, and the background sound information collected by the second pickup module is amplified by the preamplifier circuit module to obtain a second signal and is transmitted to the DSP control module. A user's volume adjustment request and sound card effect selection are acquired, the volume of a final output spk_out signal is determined according to the user's volume adjustment request, and the type of pre-stored environmental sound effects is output according to the user's sound card effect selection; The system comprises: A DSP control module; A first sound pickup module for acquiring user voice information; A first ADC module, an input end of which is connected with a signal output end of the first sound pickup module, for performing analog-digital conversion on the user's voice information to obtain a first signal, and an output end of which is connected with the DSP control module; A second sound pickup module for acquiring background voice information of a current environment; A pre-amplification circuit module connected with the second sound pickup module and used for amplifying the background voice information; A second ADC module, an input end of which is connected with a signal output end of the pre-amplification circuit module, for performing analog-digital conversion on the amplified background voice information to obtain a second signal, and an output end of which is connected with the DSP control module; A DAC module, an input end of which is connected with the DSP control module, for receiving voice information processed by the DSP control module from the first signal and the second signal, and performing digital-analog conversion on the voice information to obtain a spk_out signal; A volume adjustment module, which comprises a first control I / O port for volume adjustment, is connected with the DSP control module, and is used for acquiring a user's volume adjustment request and informing the DSP control module to respond; A sound card module, which is integrally arranged at the DSP control module, stores environmental sound effects, and is used for adding the environmental sound effects to the spk_out signal when the user needs to trigger; A power module for supplying power to the whole microphone system; Specifically, the pre-amplification circuit module comprises a circuit formed based on a MAX9812 chip, and specifically comprises, The second pickup module is connected with one end of the second capacitor C2, one end of the first resistor R1 and the GND pin of the MAX9812 chip respectively, the other end of the second capacitor C2 is connected with the IN pin of the MAX9812 chip, the other end of the first resistor R1 is connected with the BIAS pin of the MAX9812 chip, the VCC pin of the MAX9812 chip is connected with the power supply VCC, the OUT pin of the MAX9812 chip outputs the amplified background sound information, and the pins are used for controlling the running state of the circuit.

2. The method of claim 1, wherein the integrated sound card microphone system is used for, The system further comprises a prompt module, which is used for prompting each operation request of a user, and specifically comprises a buzzer-related circuit, The buzzer-related circuit specifically comprises, One end of a resistor RP2 connected with a BEEP pin of the DSP control module, the other end of the resistor RP2 connected with a base B of a triode Q3, an emitter E of the triode Q3 grounded, one end of a buzzer LS1 connected with a collector of the triode Q3, the other end of the buzzer LS1 connected with one end of a resistor RP1, and the other end of the resistor RP1 connected with a power supply.

3. The method of claim 1, wherein the integrated microphone system of the sound card is used as a microphone system. The system further comprises an interface module, and the interface module comprises a USB interface, a UART interface and a SHI interface.

4. The method of claim 1, wherein the integrated microphone system of the sound card is used as a microphone system. The system further comprises a speaker switching module, in particular, the speaker switching module is an earpiece / speaker control I / O port, when the speaker switching module is placed in the earpiece, no external sound is played, and when the speaker switching module is placed in the speaker, the external sound is played.

5. The method of claim 2, wherein the integrated sound card microphone system is used as a microphone system for a mobile phone. In particular, the model of the triode Q3 is S8050, the resistance value of the resistor RP1 is 100Ω, and the resistance value of the resistor RP2 is 1KΩ.

6. The method of claim 1, wherein the integrated sound card microphone system is used for, In particular, the DSP control module comprises a correlation circuit formed based on an FM1182.

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