CN203387659U - Multifunctional audio control circuit - Google Patents

Abstract

The utility model provides a multi-functional stereo set control circuit, including the control unit, the electrical unit, power amplifier unit and bluetooth circuit unit, electrical unit and power amplifier unit respectively with the control unit electric connection, the electrical unit provides the required electric energy of the control unit work, power amplifier unit output electric connection has loudspeaker unit, the control unit input is electric connection respectively has analog audio interface and optic fibre audio interface, analog audio interface is used for inputing analog audio signal, optic fibre audio interface is used for inputing digital audio signal. The utility model discloses a have bluetooth circuit unit and touch display element with the control unit electric connection to the cooperation sets up simulation audio interface and optic fibre audio interface, carries out the audio signal conversion through DA conversion circuit unit and exports again, but external different kind's audio plug makes the audio amplifier have touch function and remote control function, and the audio amplifier increases each functional module, makes the function pluralism, and the audio amplifier volume can not consequently increase.

Description

Multifunctional audio control circuit

technical field

The utility model relates to an audio system, in particular to a multifunctional audio control circuit.

Background technique

As an entertainment product in people's daily life, speakers have penetrated into thousands of households and have been widely used. In the past, traditional speakers were wired to audio equipment. With the continuous development of society and the continuous advancement of technology, modern audio and performance have been greatly improved. Various active speakers and other high-end speakers have appeared. It is by building the power amplifier and equalizer into the speaker, so that the speaker has the power amplifier function, but it still has to be connected to the audio equipment, and there are also some wireless speakers, which can be connected to the audio equipment wirelessly, whether it is performance or other aspects. Big improvement.

However, modern speakers inevitably have some shortcomings. For example, the speakers are not compatible with mainstream audio plugs, and there are no sockets with special audio connectors, which cannot meet the needs of different users. In addition, traditional speakers use button devices to complete functions. Key control, which increases the softness of the appearance of the speaker; in addition, the current speaker cannot be connected to the mobile phone wirelessly, and the call function cannot be realized, and the modern speaker does not have a wireless remote control function.

Utility model content

Based on this, it is necessary to provide a multi-functional audio control circuit for the deficiencies of the prior art, which can be connected with different types of audio plugs, so that the speaker has a touch function and a remote control function, and various functional modules are added to the speaker to make the functions diversified. And the volume of the speaker will not increase accordingly.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a multifunctional audio control circuit, which includes a control unit, a power supply unit, a power amplifier unit and a bluetooth circuit unit, and the bluetooth circuit unit, power supply unit and power amplifier unit They are respectively electrically connected to the control unit, the power supply unit provides the electric energy required for the operation of the control unit, the output end of the power amplifier unit is electrically connected to the speaker unit, and the input end of the control unit is electrically connected to the analog audio interface and The optical fiber audio interface is used for inputting analog audio signals, and the optical fiber audio interface is used for inputting digital audio signals.

In one embodiment, the speaker unit is provided with a woofer, a left speaker speaker, and a right speaker speaker, and the woofer, the left speaker speaker, and the right speaker speaker are respectively electrically connected to the output end of the power amplifier unit.

In one of the embodiments, the control unit is electrically connected with a touch display unit.

In one of the embodiments, the input ends of the control unit are respectively electrically connected with USB interface units, and the USB interface units are used for plugging in external data flash memory.

In one of the embodiments, the bluetooth circuit unit is provided with a receiving circuit, and the receiving circuit is electrically connected to the control unit, and an external remote controller or mobile phone sends a signal, and the receiving circuit controls the bluetooth circuit unit to complete the wireless connection.

In one of the embodiments, a DA conversion circuit unit is arranged between the power amplifier unit and the control unit, and the control unit controls the DA conversion circuit unit to be turned on and off.

In one of the embodiments, a tone control unit is further arranged between the power amplifier unit and the control unit, and the tone control terminal controls the tone equalization of the analog audio signal entering the power amplifier unit.

In one of the embodiments, the chip model adopted by the control unit is ESS 8680.

To sum up, the multifunctional audio control circuit of the present utility model electrically connects the control unit with the bluetooth circuit unit and the touch display unit, and cooperates with an analog audio interface and an optical fiber audio interface to perform audio signal conversion through the DA conversion circuit unit. For output, different types of audio plugs can be connected externally, so that the speaker has touch function and remote control function. The speaker adds various functional modules to make the functions more diversified, and the volume of the speaker will not increase.

Description of drawings

Fig. 1 is the circuit schematic diagram of the utility model multifunctional audio control circuit.

Detailed ways

In order to further understand the features, technical means, and specific objectives and functions of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the utility model multifunctional audio control circuit comprises a control unit 10, a power supply unit 20, a power amplifier unit 30 and a bluetooth circuit unit 40, and the bluetooth circuit unit 40, the power supply unit 20 and the power amplifier unit 30 are respectively connected with the control unit 10 is electrically connected, the power supply unit 20 provides the electric energy required for the work of the control unit 10, the output end of the power amplifier unit 30 is electrically connected to a speaker unit 50, and the speaker unit 50 is provided with a woofer 51, a left speaker speaker 52 and the right speaker speaker 53 , the woofer 51 , the left speaker speaker 52 and the right speaker speaker 53 are respectively electrically connected to the output end of the power amplifier unit 30 .

The chip model adopted by the control unit 10 is ESS 8086, and the input ends of the control unit 10 are electrically connected to a USB interface unit 60, an analog audio interface 70 and an optical fiber audio interface 80, and the USB interface unit 60 is used for external data flash memory For plugging use, the audio data in the data flash memory is read and transmitted by the control unit 10 through the USB interface unit 60; the analog audio interface 70 and the optical fiber audio interface 80 are used to access audio input data lines of different types of ports, and the The analog audio interface 70 is used for inputting analog audio signals, and the optical fiber audio interface 80 is used for inputting digital audio signals, so as to meet different usage requirements of users.

The Bluetooth circuit unit 40 is provided with a receiving circuit 41, and the receiving circuit 41 is electrically connected to the control unit 10. After the power is turned on, the remote controller or mobile phone sends a signal, and the receiving circuit 41 controls the Bluetooth circuit unit 40 to complete the wireless connection. , the bluetooth circuit unit 40 outputs an audio signal, which is transmitted to the power amplifier unit 30 through the control unit 10 for amplification, and then output to the speaker unit 50 to emit sound.

A DA conversion circuit unit 90 is arranged between the power amplifier unit 30 and the control unit 10. The control unit 10 controls the DA conversion circuit unit 90 to be turned on and off. When the control unit 10 receives an audio signal as an analog signal, it controls The unit 10 controls the DA conversion circuit unit 90 to turn off, and the audio signal is directly amplified by the power amplifier unit 30, and then output; when the control unit 10 receives the audio signal as a digital signal, the control unit 10 controls the DA conversion circuit unit 90 to turn on, After the digital audio signal is converted into an analog audio signal by the DA conversion circuit unit 90 , it is amplified by the power amplifier unit 30 and then output.

A tone control unit 100 is also arranged between the power amplifier unit 30 and the control unit 10. The tone control unit 100 controls the tone balance of the analog audio signal entering the power amplifier unit 30, and adjusts the output from the power amplifier unit 30 to the speaker. Acoustics after unit 50.

The control unit 10 is electrically connected with a touch display unit 110, and the touch display unit 110 displays the dynamics of the remote control and the working process of the bluetooth circuit unit 40 through LEDs. At the same time, it can control the speaker selection through manual touch.

To sum up, the multi-functional audio control circuit of the present utility model electrically connects the control unit 10 with the Bluetooth circuit unit 40 and the touch display unit 110, and cooperates with the analog audio interface 70 and the optical fiber audio interface 80, and through the DA conversion circuit unit 90 converts the audio signal and then outputs it. Different types of audio plugs can be connected externally, so that the speaker has touch function and remote control function. The speaker adds various functional modules to make the functions more diversified, and the volume of the speaker will not increase.

The above-mentioned embodiment only expresses one implementation mode of the utility model, and its description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (8)

1. a multi-functional audio control circuit, it is characterized in that: comprise control unit, power subsystem, power amplifier unit and Bluetooth circuit unit, described Bluetooth circuit unit, power subsystem and power amplifier unit are electrically connected with control unit respectively, described power subsystem provides described control unit work required electric energy, described power amplifier unit output is electrically connected with loudspeaker unit, described control unit input is electrically connected with respectively analog audio interface and optical fiber audio interface, described analog audio interface is in order to input simulated audio signal, described optical fiber audio interface is in order to input digital audio signal.

2. multi-functional audio control circuit according to claim 1, it is characterized in that: described loudspeaker unit is provided with bass horn, left voice box loudspeaker and right voice box loudspeaker, and described bass horn, left voice box loudspeaker and right voice box loudspeaker are electrically connected with the power amplifier unit output respectively.

3. multi-functional audio control circuit according to claim 1, it is characterized in that: described control unit is electrically connected with touch sensitive display unit.

4. multi-functional audio control circuit according to claim 1, it is characterized in that: described control unit input is electrically connected with respectively usb interface unit, and described usb interface unit is pegged graft for the external data flash memory.

5. multi-functional audio control circuit according to claim 1, it is characterized in that: described Bluetooth circuit unit is provided with receiving circuit, described receiving circuit is electrically connected with control unit, external remote or mobile phone send signal, control the Bluetooth circuit unit by receiving circuit and complete wireless connections.

6. multi-functional audio control circuit according to claim 1 is characterized in that: be provided with the DA conversion circuit unit between described power amplifier unit and described control unit, described control unit is controlled described DA conversion circuit unit and is opened and closed.

7. multi-functional audio control circuit according to claim 1, it is characterized in that: also be provided with the tone control unit between described power amplifier unit and described control unit, the Key EQ that described tone control end member enters into power amplifier unit to simulated audio signal is controlled.

8. multi-functional audio control circuit according to claim 1 is characterized in that: the chip model that described control unit adopts is ESS 8680.