CN220023011U - Microphone with sound mixing function - Google Patents
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- CN220023011U CN220023011U CN202321072274.2U CN202321072274U CN220023011U CN 220023011 U CN220023011 U CN 220023011U CN 202321072274 U CN202321072274 U CN 202321072274U CN 220023011 U CN220023011 U CN 220023011U
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Abstract
The utility model provides a microphone with a sound mixing function, which comprises: the microphone input end comprises a microphone audio acquisition terminal and a microphone audio analysis module; the Bluetooth audio input end comprises a Bluetooth audio receiving and transmitting module and a Bluetooth audio processor, and the Bluetooth audio receiving and transmitting module is connected with the Bluetooth audio processor; the sound mixing module comprises a DSP sound mixing chip, the microphone audio analysis module is connected with a first input end of the DSP sound mixing chip, and the Bluetooth audio processor is connected with a second input end of the DSP sound mixing chip through an I2S bus; the USB audio output interface is connected with the audio signal output end of the DSP audio mixing chip. The Bluetooth module is used for receiving background music output by the terminal, the sound mixing module is used for mixing the background music received by the Bluetooth and the voice collected by the microphone and then outputting the mixed sound, the I2S bus is used for transmitting audio signals to ensure the audio signal quality, and the high-quality sound mixing of the voice and the background music is realized at low cost.
Description
Technical Field
The embodiment of the utility model relates to the technical field of audio processing, in particular to a microphone with a sound mixing function.
Background
With the vigorous development of the live broadcasting industry, more and more people become the anchor, for professional singing anchor, besides recording the voice of own chat or singing through a microphone, background music is often required to be played to mobilize the atmosphere of a live broadcasting room or to configure background music for songs of own singing, and if background music is recorded through a mode of playing the background music externally and then receiving the background music through the microphone, the recorded tone quality is often poor, at this time, the anchor often records through professional equipment such as a sound card, however, the cost of the sound card is high, wiring is complex during use, and how to realize high-quality mixing of the background music and the voice at lower cost is quite important.
Disclosure of Invention
The main purpose of the embodiment of the utility model is to provide a microphone with a sound mixing function, wherein a microphone input end is used for collecting voice, a Bluetooth receiving and transmitting module is used for receiving background music output by a mobile phone or other terminals, the background music is input into a DSP sound mixing chip through an I2S bus together with the voice for mixing and then output, so that high-quality sound mixing of the background music and the voice is realized at low cost, and the live broadcasting requirement and the audio recording requirement of a user are met.
To achieve the above object, an embodiment of the present utility model provides a microphone with a sound mixing function, including:
the microphone input end comprises a microphone audio acquisition terminal and a microphone audio analysis module, wherein the microphone audio acquisition terminal is used for acquiring microphone audio, the microphone audio analysis module is connected with the microphone audio acquisition terminal, and the microphone audio analysis module is used for carrying out analog-to-digital conversion on the microphone audio;
the Bluetooth audio input end comprises a Bluetooth audio receiving and transmitting module and a Bluetooth audio processor, wherein the Bluetooth audio receiving and transmitting module is connected with the Bluetooth audio processor, the Bluetooth audio receiving and transmitting module is used for acquiring Bluetooth audio signals, and the Bluetooth audio processor is used for decoding the Bluetooth audio signals;
the audio mixing module comprises a DSP audio mixing chip, the microphone audio analysis module is connected with a first input end of the DSP audio mixing chip, and the Bluetooth audio processor is connected with a second input end of the DSP audio mixing chip through an I2S bus;
the USB audio output interface is connected with the audio signal output end of the DSP audio mixing chip.
In some embodiments, the first input is a microphone audio signal input pin of the DSP audio mixing chip.
In some embodiments, the second input is an I2S audio interface pin of the DSP-mixer chip.
In some embodiments, the bluetooth audio processor comprises a BT8922B2 chip.
In some embodiments, the microphone is further provided with a second audio output, the second audio output being connected to the audio signal output of the DSP audio mixing chip, the second audio output comprising a 3.5 mm headphone jack.
In some embodiments, the microphone is further provided with a first switch for controlling the microphone input to be mute or enabled.
In some embodiments, the microphone is further provided with a bluetooth control module, and the bluetooth control module is used for controlling the bluetooth audio transceiver module to be started or shut down.
In some embodiments, the microphone is further provided with a first volume adjustment module for volume adjustment of the bluetooth audio signal.
In some implementations, the first volume adjustment module includes a knob, the microphone is further provided with an LED light strip and an LED light strip adjustment module, the LED light strip is disposed around the knob, and the LED light strip adjustment module is configured to adjust brightness of the LED light strip.
In some embodiments, the USB audio output interface includes a first signal output pin and a second signal output pin, the audio signal output end includes a first audio output pin and a second audio output pin, the first signal output pin is connected with the first audio output pin, the second signal output pin is connected with the second audio output pin, a first resistor is connected between the first signal output pin and the first audio output pin, and a second resistor is connected between the second signal output pin and the second audio output pin.
In an embodiment of the present utility model, a microphone with a sound mixing function is provided, including: the microphone input end comprises a microphone audio acquisition terminal and a microphone audio analysis module, wherein the microphone audio acquisition terminal is used for acquiring microphone audio, the microphone audio analysis module is connected with the microphone audio acquisition terminal, and the microphone audio analysis module is used for carrying out analog-to-digital conversion on the microphone audio; the Bluetooth audio input end comprises a Bluetooth audio receiving and transmitting module and a Bluetooth audio processor, wherein the Bluetooth audio receiving and transmitting module is connected with the Bluetooth audio processor, the Bluetooth audio receiving and transmitting module is used for acquiring Bluetooth audio signals, and the Bluetooth audio processor is used for decoding the Bluetooth audio signals; the audio mixing module comprises a DSP audio mixing chip, the microphone audio analysis module is connected with a first input end of the DSP audio mixing chip, and the Bluetooth audio processor is connected with a second input end of the DSP audio mixing chip through an I2S bus; the USB audio output interface is connected with the audio signal output end of the DSP audio mixing chip. The voice audio is collected through the microphone collection terminal, the voice audio is subjected to analog-to-digital conversion through the microphone audio analysis module to obtain corresponding digital audio signals, meanwhile, bluetooth audio signals sent by the terminal are received through the Bluetooth audio receiving and sending module, the Bluetooth audio signals are decoded through the Bluetooth audio processor, two paths of digital audio signals are input into the DSP audio mixing chip to be mixed, the mixed audio signals are output to live broadcast equipment such as a computer through the USB audio output interface, the quality of the audio signals is guaranteed through I2S bus transmission digital audio signals in the process, high-quality audio mixing of voice and background music is achieved at low cost, and the requirements of users on live broadcast or song recording are met.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic diagram of a modularized structure of a microphone with a sound mixing function according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a modular structure of another microphone with a sound mixing function according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a modular structure of a microphone with a sound mixing function according to an embodiment of the present utility model;
fig. 4 is a circuit configuration diagram of a USB audio output interface according to an embodiment of the present utility model.
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 only for explaining the embodiments of the present utility model and are not to be construed as limiting the embodiments of the present utility model.
In the description of the embodiments of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the 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 embodiments of the present utility model.
In the description of the embodiments of the present utility model, several means one or more, and plural means two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and above, below, within, etc. are understood to include the present number. The description of bluetooth, second, is only for the purpose of distinguishing between technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the embodiments of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly, and those skilled in the art may reasonably determine the specific meaning of the terms in the embodiments of the present utility model in combination with the specific contents of the technical solutions.
The embodiment of the utility model provides a microphone with a sound mixing function, which comprises the following components:
the microphone input end 100 comprises a microphone audio acquisition terminal 101 and a microphone audio analysis module 102, wherein the microphone audio acquisition terminal is used for acquiring microphone audio, the microphone audio analysis module is connected with the microphone audio acquisition terminal, and the microphone audio analysis module is used for carrying out analog-to-digital conversion on the microphone audio;
the Bluetooth audio input end 200 comprises a Bluetooth audio receiving and transmitting module 201 and a Bluetooth audio processor 202, wherein the Bluetooth audio receiving and transmitting module is connected with the Bluetooth audio processor, the Bluetooth audio receiving and transmitting module is used for acquiring Bluetooth audio signals, and the Bluetooth audio processor is used for decoding the Bluetooth audio signals;
the audio mixing module 300 comprises a DSP audio mixing chip 301, the microphone audio analysis module is connected with a first input end of the DSP audio mixing chip, and the audio processor is connected with a second input end of the DSP audio mixing chip through an I2S bus;
the USB audio output interface 400 is connected with the audio signal output end of the DSP audio mixing chip.
In the embodiment of the utility model, microphone audio is collected through a microphone collecting terminal, specifically, the microphone collecting terminal can be a microphone, the microphone audio collected through the microphone collecting terminal is subjected to analog-to-digital conversion through a microphone audio analyzing module to obtain a microphone digital audio signal, the microphone digital audio signal is output to a first input end of a DSP (digital signal processor) mixing chip, specifically, the first input end can be at least one of pins such as a PCM (pulse code modulation) pin, a TDM (time division multiplexing) pin and a MIC (microphone) pin of the DSP mixing chip, meanwhile, a Bluetooth audio signal input by the terminal is received through a Bluetooth audio receiving and transmitting module, the Bluetooth audio signal is decoded through a Bluetooth audio processor, the decoded Bluetooth audio signal is input to a second input end of the DSP mixing chip through an I2S (input to a Bluetooth audio processor), specifically, the second input end may be an I2S pin audio interface of the DSP mixing chip, the two paths of audio are mixed in the DSP mixing chip, specifically, the type of the DSP mixing chip may be an AUDU1452, an ADAU1466, a TLV320AIC3254, an MP325, etc., the pin connection method of the DSP mixing chip may refer to a data manual of the corresponding chip, the corresponding two paths of audio signal input pins are respectively connected with the microphone audio analysis module and the bluetooth audio processor, and then the audio signal output pin of the DSP mixing chip is connected with the USB audio output interface, the audio signal after mixing is output to a computer or other equipment through the USB audio output interface, based on this, high quality mixing of human voice and background music is realized with lower cost, and the requirements of live broadcasting or song recording of users are better satisfied.
It should be noted that, in this embodiment, the I2S bus is connected to the DSP audio mixing chip and the bluetooth audio transceiver module, and the I2S bus transmits audio signals in a linear PCM coding format, which has higher fidelity, and can better ensure quality of the audio signals, and meanwhile, the I2S bus adopts a synchronous clock transmission mode, which can effectively reduce time sequence offset and loss of audio data, and the I2S bus is connected to the bluetooth audio transceiver module and the DSP audio mixing chip, so that high quality transmission of audio signals can be achieved, thereby improving audio mixing quality.
In some embodiments, the microphone may be powered by a device such as a computer through a USB audio output interface, or by a battery mounted inside the microphone.
In some embodiments, the bluetooth audio processor includes a BT8922B2 chip, the BT8922B2 chip being capable of supporting bluetooth audio reception and transmission functions. The chip supports a plurality of Bluetooth audio protocols, including SBC, AAC, aptX, aptX HD and the like, can realize high-quality audio transmission, and supports decoding and encoding of a plurality of audio formats. In addition, the chip also supports various digital audio interfaces (such as I2S, PCM, TDM and the like) and can be connected with various audio processors. It will be appreciated that in some embodiments, the bluetooth audio transceiver module and the bluetooth audio processor are integrated, for example, in this embodiment, serial communication may be performed between the universal asynchronous receiver/transmitter interface of the BT8922B2 chip and the terminal to receive and transmit bluetooth audio signals, and the bluetooth audio signals are decoded by the audio decoding algorithm integrated inside the BT8922B2 chip, where the BT8922B2 chip serves as both the bluetooth audio transceiver module and the bluetooth audio processor.
Referring to fig. 2, in some embodiments, the microphone is further provided with a second audio output end 500, where the second audio output end is connected with an audio signal output end of the DSP audio mixing chip, and the second audio output end includes a 3.5 mm earphone interface, based on which, a user can listen to audio after audio mixing by connecting the earphone to the 3.5 mm earphone interface, so as to achieve an ear-back effect, thereby better meeting the live broadcast requirement of the user.
In some embodiments, referring to fig. 3, the microphone is further provided with a first switch S1, where the first switch is used to control the microphone input end to mute or enable, specifically, a switch in the form of a contactor or a triode may be provided between the power supply and the microphone acquisition terminal, and the opening and closing of the switch are controlled by providing a corresponding button on the housing of the microphone, so as to control the microphone input end to mute or enable. It can be understood that in the live broadcast process of the user, a situation such as receiving a call occurs, at this time, the user needs to mute the microphone to avoid privacy disclosure and avoid chat disclosure, and based on this, in this embodiment, the microphone input end is controlled to be started or muted by setting the first switch.
In some embodiments, referring to fig. 3, the microphone is further provided with a bluetooth control module S2, which is used to control the bluetooth audio transceiver module to be turned on or off. Specifically, a switch in the form of a contactor or a triode and the like can be arranged between a power supply and the microphone Bluetooth audio receiving and transmitting module, and the Bluetooth audio receiving and transmitting module is controlled to be closed or started by arranging a corresponding button on the shell of the microphone to control the on-off of the switch.
It will be appreciated that in a live broadcast process, in different scenarios, the user needs to configure background music with different volume levels to create a live broadcast atmosphere, and based on this, referring to fig. 3, in some embodiments, the microphone is further provided with a first volume adjustment module 600, where the first volume adjustment module is configured to perform volume adjustment on an audio signal received by the bluetooth audio input terminal. Specifically, the potentiometer can be arranged between the Bluetooth audio processor and the Bluetooth audio receiving and transmitting module, and the knob is arranged on the shell of the microphone to control the resistor of the potentiometer connected into the Bluetooth audio transmission line, so that the volume of Bluetooth audio can be adjusted.
In some embodiments, the LED strip may be further disposed around the knob of the first volume adjusting module, and the brightness of the LED strip is adjusted by the LED strip adjusting module, so that the user can calculate the volume of the current bluetooth audio signal according to the brightness of the LED strip and further build a live broadcast atmosphere at the same time.
In some embodiments, the USB audio output interface includes a first signal output pin d+ and a second signal output pin D-, the audio signal output includes a first audio output pin and a second audio output pin, the first signal output pin is connected to the first audio output pin, the second signal output pin is connected to the second audio output pin, a first resistor is connected between the first signal output pin and the first audio output pin, and a second resistor is connected between the second signal output pin and the second audio output pin. Specifically, referring to fig. 4, the first signal pin d+ and the second signal pin D-respectively correspond to the DP signal line and the DM signal line of the USB bus, and impedance matching is implemented by setting the first resistor R1 and the second resistor R2, so that audio signal distortion or noise caused by audio signal reflection and loss is avoided, and thus, the fidelity of the audio signal is improved.
Based on the microphone provided by the embodiment, a user only needs to connect the USB audio output interface of the microphone to live broadcast equipment such as a PC and the like, and starts the Bluetooth module of the microphone, and the Bluetooth signals of the microphone are searched for through terminals such as a mobile phone and the like to be matched for use without complex wiring, debugging, parameter configuration and other operations, so that the operation of mixing human voice and background music during live broadcast or song recording is greatly simplified, and meanwhile, compared with sound card and other sound mixing equipment, the microphone with the sound mixing function provided by the utility model has lower cost and can effectively reduce the equipment cost of live broadcast of the user.
The embodiments described in the present utility model are for more clearly describing the technical solutions of the embodiments of the present utility model, and do not constitute a limitation on the technical solutions provided by the embodiments of the present utility model, and those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present utility model are applicable to similar technical problems.
It will be appreciated by persons skilled in the art that the technical solutions shown in the drawings do not constitute a limitation of the embodiments of the present utility model, and may include more or less components than those illustrated, or may combine certain components, or different components.
The terms "first," "second," "third," "fourth," and the like in the description of the utility model and in the above figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The preferred embodiments of the present utility model have been described above with reference to the accompanying drawings, and are not thereby limiting the scope of the claims of the embodiments of the present utility model. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present utility model shall fall within the scope of the claims of the embodiments of the present utility model.
Claims (10)
1. A microphone with a sound mixing function, comprising:
the microphone input end comprises a microphone audio acquisition terminal and a microphone audio analysis module, wherein the microphone audio acquisition terminal is used for acquiring microphone audio, the microphone audio analysis module is connected with the microphone audio acquisition terminal, and the microphone audio analysis module is used for carrying out analog-to-digital conversion on the microphone audio;
the Bluetooth audio input end comprises a Bluetooth audio receiving and transmitting module and a Bluetooth audio processor, wherein the Bluetooth audio receiving and transmitting module is connected with the Bluetooth audio processor, the Bluetooth audio receiving and transmitting module is used for acquiring Bluetooth audio signals, and the Bluetooth audio processor is used for decoding the Bluetooth audio signals;
the audio mixing module comprises a DSP audio mixing chip, the microphone audio analysis module is connected with a first input end of the DSP audio mixing chip, and the Bluetooth audio processor is connected with a second input end of the DSP audio mixing chip through an I2S bus;
the USB audio output interface is connected with the audio signal output end of the DSP audio mixing chip.
2. The microphone of claim 1 wherein the first input is a microphone audio signal input pin of the DSP audio mixing chip.
3. The microphone of claim 1 wherein the second input is an I2S audio interface pin of the DSP audio mixing chip.
4. The microphone of claim 1, wherein the bluetooth audio processor comprises a BT8922B2 chip.
5. The microphone of claim 1 further provided with a second audio output, the second audio output being connected to an audio signal output of the DSP audio mixing chip, the second audio output comprising a 3.5 mm headphone jack.
6. The microphone of claim 1, further provided with a first switch for controlling muting or enabling of the microphone input.
7. The microphone of claim 1, further comprising a bluetooth control module for controlling the bluetooth audio transceiver module to be turned on or off.
8. The microphone of claim 1 further provided with a first volume adjustment module for volume adjustment of the bluetooth audio signal.
9. The microphone of claim 8 wherein the first volume adjustment module comprises a knob, the microphone further provided with an LED strip and an LED strip adjustment module, the LED strip disposed around the knob, the LED strip adjustment module for adjusting the brightness of the LED strip.
10. The microphone of claim 1 wherein the USB audio output interface comprises a first signal output pin and a second signal output pin, the audio signal output terminal comprises a first audio output pin and a second audio output pin, the first signal output pin is connected with the first audio output pin, the second signal output pin is connected with the second audio output pin, a first resistor is connected between the first signal output pin and the first audio output pin, and a second resistor is connected between the second signal output pin and the second audio output pin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321072274.2U CN220023011U (en) | 2023-05-06 | 2023-05-06 | Microphone with sound mixing function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321072274.2U CN220023011U (en) | 2023-05-06 | 2023-05-06 | Microphone with sound mixing function |
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| CN220023011U true CN220023011U (en) | 2023-11-14 |
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| CN202321072274.2U Active CN220023011U (en) | 2023-05-06 | 2023-05-06 | Microphone with sound mixing function |
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