CN214381307U - Audio acquisition output device and microphone - Google Patents
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- CN214381307U CN214381307U CN202120285443.5U CN202120285443U CN214381307U CN 214381307 U CN214381307 U CN 214381307U CN 202120285443 U CN202120285443 U CN 202120285443U CN 214381307 U CN214381307 U CN 214381307U
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Abstract
The utility model discloses an output device and microphone are gathered to audio frequency relates to audio frequency technical field. In the utility model, the audio acquisition and output device comprises an audio acquisition module, an analog output module and a digital output module; the audio acquisition module is used for acquiring an audio electric signal and converting the audio electric signal into a signal to be output; the analog output module is used for receiving a signal to be output and transmitting the signal to be output to preset audio equipment; and the digital output module is used for receiving the signal to be output, converting the signal to be output into a digital output signal and transmitting the digital output signal to a preset network. The utility model discloses a compatible analog output of analog output module and digital output, the configuration is nimble, and the range of application is wide.
Description
Technical Field
The utility model relates to an audio frequency technical field especially relates to an output device and microphone are gathered to audio frequency.
Background
Currently, sound collection devices such as microphones can output collected sounds through various ways. For example, the collected audio analog signal is directly output to an external device, such as a sound device; or converting the collected audio analog signals into digital signals, and transmitting the digital signals to the network for propagation. However, the existing devices only implement analog output or digital output, so how to implement voice output more conveniently is a technical problem to be solved urgently
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide an audio acquisition output device and a microphone, which can solve the technical problem of the prior art that the audio acquisition device can only realize analog output or digital output.
In order to achieve the above object, the present invention provides an audio acquisition and output device, which comprises an audio acquisition module, an analog output module and a digital output module, wherein the audio acquisition module is respectively connected with the analog output module and the digital output module; wherein the content of the first and second substances,
the audio acquisition module is used for acquiring an audio electric signal and converting the audio electric signal into a signal to be output;
the analog output module is used for receiving a signal to be output and transmitting the signal to be output to preset audio equipment;
and the digital output module is used for receiving the signal to be output, converting the signal to be output into a digital output signal and transmitting the digital output signal to a preset network.
Optionally, the audio acquisition and output device further comprises a phantom power supply circuit, and the phantom power supply circuit is respectively connected with the analog output module and the audio acquisition module;
and the phantom power supply circuit is used for acquiring a phantom power supply from the analog output module, converting the phantom power supply to obtain a power supply and transmitting the power supply to the audio acquisition module.
Optionally, the phantom power supply circuit includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, and a first diode;
the first end of the first capacitor is connected with the first output end of the analog output module, the second end of the first capacitor is connected with the first input end of the audio acquisition module, the first end of the second capacitor is connected with the second output end of the analog output module, the second end of the second capacitor is connected with the second input end of the audio acquisition module, the first end of the first resistor is connected with the first end of the first capacitor, the first end of the second resistor is connected with the first end of the second capacitor, the second end of the first resistor is respectively connected with the second end of the second resistor, the first end of the third capacitor, the first end of the fourth capacitor and the cathode of the first diode, and the second end of the third capacitor, the second end of the fourth capacitor and the anode of the first diode are all grounded.
Optionally, the analog output module includes an analog output connector; the first power end of the analog output connector is connected with the first end of the first capacitor, the second power end of the analog output connector is connected with the first end of the second capacitor, and the input end of the analog output module is connected with the output end of the audio acquisition module.
Optionally, the audio acquisition module comprises a sound acquisition unit, an audio analog amplification unit and a filtering unit which are connected in sequence;
the sound acquisition unit is used for acquiring an audio electric signal and transmitting the audio electric signal to the audio analog amplification unit;
the audio frequency analog amplification unit is used for amplifying the audio frequency electric signal to obtain an amplified signal and transmitting the amplified signal to the filtering unit;
and the filtering unit is used for filtering the amplified signal to obtain a signal to be output.
Optionally, the digital output module includes an analog-to-digital conversion unit, a digital signal processing unit, and a network interface unit, which are connected in sequence;
the analog-digital conversion unit is used for receiving a signal to be output, converting the signal to be output into a digital signal and transmitting the digital signal to the digital signal processing unit;
the digital signal processing unit is used for preprocessing the digital signal to obtain a digital output signal and transmitting the digital output signal to the network interface unit;
and the network interface unit is used for transmitting the digital output signal to a preset network.
Optionally, the digital output module further comprises a microprocessor unit and a human-computer interaction unit, and the microprocessor unit is respectively connected with the digital signal processing unit and the human-computer interaction unit;
the human-computer interaction unit is used for receiving the operation instruction, converting the operation instruction into an operation signal and transmitting the operation signal to the microprocessor unit;
and the microprocessor unit is used for converting the operation signal into a control signal and transmitting the control signal to the digital signal processing unit.
Optionally, the digital output module further comprises a digital power supply unit, and the digital power supply unit is respectively connected with the microprocessor unit and the human-computer interaction unit;
and the digital power supply unit is used for receiving a power supply, converting the power supply into working voltage and transmitting the working voltage to the microprocessor unit and the human-computer interaction unit.
Optionally, the human-computer interaction unit comprises a keyboard and a liquid crystal display screen, a signal input end of the liquid crystal display screen is connected with the keyboard, and a signal output end of the liquid crystal display screen is connected with the microprocessor unit.
In order to achieve the above object, the present invention further provides a microphone, which includes the audio acquisition output device as described above.
The utility model discloses in, construct audio acquisition output device through setting up audio acquisition module, analog output module and digital output module, wherein, audio acquisition module is used for gathering the audio signal of telecommunication to convert the audio signal of telecommunication into waiting to export the signal; the analog output module is used for receiving a signal to be output and transmitting the signal to be output to preset audio equipment; and the digital output module is used for receiving the signal to be output, converting the signal to be output into a digital output signal and transmitting the digital output signal to a preset network. The utility model discloses a compatible analog output of analog output module and digital output, the configuration is nimble, and the range of application is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of the audio acquisition and output device of the present invention;
FIG. 2 is a circuit diagram of an embodiment of a phantom power supply circuit in the audio output device of the present invention;
fig. 3 is a schematic diagram of functional modules of an embodiment of the audio output device of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
3003 | |
| 1001 | |
3004 | |
| 1002 | Audio frequency |
3005 | Human- |
| 1003 | |
3006 | Digital |
| 200 | Analog output module | C1～C4 | First to |
| 300 | Digital output module | R1～R2 | First to |
| 3001 | Analog-to-digital conversion unit | D1 | |
| 3002 | Digital signal processing unit |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of functional modules of an embodiment of the audio output device of the present invention.
As shown in fig. 1, in the present embodiment, the audio acquisition output device includes an audio acquisition module 100, an analog output module 200, and a digital output module 300, and the audio acquisition module 100 is connected to the analog output module 200 and the digital output module 300, respectively.
The audio acquisition module 100 is configured to acquire an audio electrical signal and convert the audio electrical signal into a signal to be output.
The audio electrical signal refers to a voltage signal generated by a sound sensing element in the audio acquisition module 100 when detecting a sound wave in the air, where the sound wave may be a sound emitted by a person or a sound generated by other devices. For example, the sound sensitive element may be an electret diaphragm. When the electret diaphragm encounters sound wave vibration, the electric field at two ends of the capacitor is changed, so that alternating voltage which changes along with the change of the sound wave is generated.
The signal to be output is a processed audio electrical signal. Generally, the amplitude of the collected audio electrical signal is small and noise is mixed, and in order to meet the output requirement, the audio electrical signal needs to be processed, so that the output requirement is met, and the electrical signal reaching the output requirement is the signal to be output.
The analog output module 200 is configured to receive a signal to be output and transmit the signal to be output to a preset audio device.
It should be noted that the preset audio device refers to a device capable of receiving an analog audio signal, such as a sound device. The audio signal is typically an analog signal, which is typically a continuous, varying voltage signal, and the analog output module 200 directly transmits the analog signal to the predetermined audio device.
In a specific implementation, the analog output module 200 may include an RCA port, a butterfly clip port, or an earphone port, and the preset audio device may insert a corresponding audio connection line into the port, so as to implement connection between the audio acquisition output device and the preset audio device, thereby receiving the signal to be output.
The digital output module 300 is configured to receive a signal to be output, convert the signal to be output into a digital output signal, and transmit the digital output signal to a predetermined network.
It should be noted that the preset network may be the internet or a local area network, and the present embodiment takes the internet as an example for description. In the internet environment, users can freely exchange data, and in order to meet the requirement of sharing audio, audio data can be transmitted to the internet by carrying out digital processing on audio signals.
In this embodiment, the user can freely select to transmit the signal to be output to the analog output module 200 or the digital output module 300, and the analog output and the digital output are compatible. In a specific implementation, a switch may be set to control a loop between the audio acquisition module 100 and the analog output module 200 or the digital output module 300, and a module for output is selected by controlling on/off of the loop.
The utility model discloses in, construct audio acquisition output device through setting up audio acquisition module, analog output module and digital output module, wherein, audio acquisition module is used for gathering the audio signal of telecommunication to convert the audio signal of telecommunication into waiting to export the signal; the analog output module is used for receiving a signal to be output and transmitting the signal to be output to preset audio equipment; and the digital output module is used for receiving the signal to be output, converting the signal to be output into a digital output signal and transmitting the digital output signal to a preset network. The utility model discloses a compatible analog output of analog output module and digital output, the configuration is nimble, and the range of application is wide.
Further, in order to save the internal power, in this embodiment, the audio acquisition output device further includes a phantom power supply circuit, and the phantom power supply circuit is connected to the analog output module 200 and the audio acquisition module 100, respectively. And the phantom power supply circuit is used for acquiring a phantom power supply from the analog output module 200, converting the phantom power supply to obtain a power supply, and transmitting the power supply to the audio acquisition module 100.
The electret diaphragm in the audio capture module 100 needs to be powered, and this type of power supply is typically carried by the signal line, but does not cause problems for signal transmission, and is called phantom power supply. In use, the analog output module 200 is connected to an audio device from which the phantom power may be provided.
Further, since the power of the phantom power supply is weak, the phantom power supply needs to be regulated. Referring to fig. 2, fig. 2 is a circuit structure diagram of an embodiment of the phantom power supply circuit in the audio output device of the present invention.
As shown in fig. 2, the phantom power supply circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, and a first diode D1. A first end of the first capacitor C1 is connected to the first output end of the analog output module 200, a second end of the first capacitor C1 is connected to the first input end of the audio acquisition module 100, a first end of the second capacitor C2 is connected to the second output end of the analog output module 200, a second end of the second capacitor C2 is connected to the second input end of the audio acquisition module 100, a first end of the first resistor R1 is connected to the first end of the first capacitor C1, a first end of the second resistor R2 is connected to the first end of the second capacitor C2, a second end of the first resistor R1 is connected to the second end of the second resistor C2, the first end of the third capacitor C3, the first end of the fourth capacitor C4 and the cathode of the first diode D1, and a second end of the third capacitor C3, the second end of the fourth capacitor C4 and the anode of the first diode D1 are all grounded.
The first capacitor C1, the second capacitor C2, and the third capacitor C3 may be electrolytic capacitors, and the first diode D1 may be a zener diode. In a specific implementation, the phantom power supply circuit may take power from the second output terminal of the analog output module 200, and apply the converted power to the first output terminal of the analog output module 200 to supply power to the audio acquisition module 100.
Further, the analog output module comprises an analog output connector; the first power end of the analog output connector is connected with the first end of the first capacitor, the second power end of the analog output connector is connected with the first end of the second capacitor, and the input end of the analog output module is connected with the output end of the audio acquisition module.
In a specific implementation, the analog output connector may be a socket, a jack, or the like, and provides a plug port for providing an external audio device to transmit a signal to be output.
Referring to fig. 3, fig. 3 is a schematic diagram of functional modules of an embodiment of the audio output device of the present invention.
Further, the audio capture module 100 includes a sound capture unit 1001, an audio analog amplification unit 1002, and a filtering unit 1003, which are connected in sequence. And the sound collection unit 1001 is used for collecting an audio electrical signal and transmitting the audio electrical signal to the audio analog amplification unit 1002. The audio analog amplifying unit 1002 is configured to amplify the audio electrical signal, obtain an amplified signal, and transmit the amplified signal to the filtering unit 1003. And a filtering unit 1003, configured to perform filtering processing on the amplified signal to obtain a signal to be output.
The sound collection unit 1001 may include an electret diaphragm and corresponding peripheral circuitry, so as to sense sound wave changes in the air and generate corresponding audio electrical signals. Generally, the audio electrical signal is weak and needs to be amplified. The audio analog amplification unit 1002 may be composed of discrete components such as an operational amplifier or a triode, and amplifies the amplitude of a weak audio electrical signal to a level that can be accurately recognized by a post-stage circuit. The filtering unit 1003 is composed of a high-pass filter and a low-pass filter, and filters out a frequency component that cannot be recognized by human ears during amplification, and generally only allows audio electrical signals in a range of 20Hz to 200KHz to pass through. Since the sound collection circuit, the audio analog amplification circuit, and the filter circuit have mature technologies, the present embodiment is not described herein.
Further, the digital output module 300 includes an analog-to-digital conversion unit 3001, a digital signal processing unit 3002, and a network interface unit 3003, which are connected in sequence. The analog-to-digital conversion unit 3001 is configured to receive a signal to be output, convert the signal to be output into a digital signal, and transmit the digital signal to the digital signal processing unit 3002. The digital signal processing unit 3002 is configured to pre-process the digital signal to obtain a digital output signal, and transmit the digital output signal to the network interface unit 3003. The network interface unit 3003 is configured to transmit the digital output signal to a predetermined network.
The analog-to-digital conversion unit 3001 may be formed by an analog-to-digital converter and other elements, and samples the signal to be output according to a set sampling frequency to obtain a digital signal. The digital signal processing unit 3002 may be composed of FPGA modules having respective preset functions, and processes the digitized signals, such as AEC (echo cancellation), ANC (noise cancellation), AMC (automatic mixing), and the like. The network interface unit 3003 is used to perform encryption, compression, and encapsulation on the digital output signal, and if the digital output signal is connected to an external network, the digital output signal can be transmitted to other places via the internet, and then the digital output signal is restored by a corresponding device, such as receiving, unpacking, decompressing, and decrypting. Since there is a separate digital audio processing device in the prior art, the analog-to-digital conversion unit 3001, the digital signal processing unit 3002, and the network interface unit 3003 also have mature technologies, and those skilled in the art can implement the construction of each unit in this embodiment according to the mature technologies in the prior art, which is not described again in this embodiment.
Further, the digital output module 300 further includes a microprocessor unit 3004 and a human-computer interaction unit 3005, wherein the microprocessor unit 3004 is connected to the digital signal processing unit 3002 and the human-computer interaction unit 3005, respectively. The human-computer interaction unit 3005 is configured to receive an operation instruction, convert the operation instruction into an operation signal, and transmit the operation signal to the microprocessor unit 3004. The microprocessor unit 3004 is used for converting the operation signal into a control signal and transmitting the control signal to the digital signal processing unit 3002.
It is understood that the digital signal processing unit 3002 has a plurality of processing functions built therein, but in actual use, not all audio signals need to be subjected to all processing functions. Thus, the microprocessor unit 3004 may control the enablement of various processing functions. Meanwhile, the human-computer interaction unit 3005 may facilitate input by a user. Specifically, the human-computer interaction unit 3005 comprises a keyboard and a liquid crystal display screen, wherein a signal input end of the liquid crystal display screen is connected with the keyboard, and a signal output end of the liquid crystal display screen is connected with the microprocessor unit. The user may enter the processing function to be enabled via a keypad or lcd display. In addition, the digital signal processing unit 3002 may also control the sampling frequency in the analog-to-digital conversion unit 3001, the encryption method in the network interface unit 3003, and the like.
Further, the digital output module further includes a digital power supply unit 3006, and the digital power supply unit 3006 is connected to the microprocessor unit 3004 and the human-computer interaction unit 3005, respectively. And the digital power supply unit 3006 is used for receiving a power supply, converting the power supply into a working voltage, and transmitting the working voltage to the microprocessor unit 3004 and the human-computer interaction unit 3005.
In order to manage the overall power supply inside the audio acquisition and output device, the digital power supply unit 3006 is used to manage power supply in the present embodiment. The power supply can be a built-in battery or an external adapter power supply. The digital power supply unit 3006 converts the power supply to output the operating voltage required by each unit, such as 3.3V, 5V, or 8V. Of course, the power supply object of the digital power supply unit 3006 may be set as needed. The power conversion circuit also has a mature technology, and the detailed description thereof is omitted in this embodiment.
In order to achieve the above object, the present invention further provides a microphone, which includes the audio acquisition output device as described above. The specific structure of the audio acquisition and output device refers to the above embodiments, and since the microphone adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated herein.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
It should be noted that, in the practical application of the present invention, the software program is inevitably applied, but the applicant states here that the software program applied in the embodiment is the prior art, and in the present application, the modification and protection of the software program are not involved, but only the protection of the hardware architecture designed for the purpose of the present invention.
Claims (10)
1. The audio acquisition and output device is characterized by comprising an audio acquisition module, an analog output module and a digital output module, wherein the audio acquisition module is respectively connected with the analog output module and the digital output module; wherein the content of the first and second substances,
the audio acquisition module is used for acquiring an audio electric signal and converting the audio electric signal into a signal to be output;
the analog output module is used for receiving the signal to be output and transmitting the signal to be output to a preset audio device;
and the digital output module is used for receiving the signal to be output, converting the signal to be output into a digital output signal and transmitting the digital output signal to a preset network.
2. The audio-capture output device of claim 1, further comprising a phantom power circuit connected to the analog output module and the audio-capture module, respectively;
the phantom power supply circuit is used for acquiring a phantom power supply from the analog output module, converting the phantom power supply to obtain a power supply and transmitting the power supply to the audio acquisition module.
3. The audio-capture output device of claim 2, wherein the phantom power circuit comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, and a first diode;
the first end of the first capacitor is connected with the first output end of the analog output module, the second end of the first capacitor is connected with the first input end of the audio acquisition module, the first end of the second capacitor is connected with the second output end of the analog output module, the second end of the second capacitor is connected with the second input end of the audio acquisition module, the first end of the first resistor is connected with the first end of the first capacitor, the first end of the second resistor is connected with the first end of the second capacitor, the second end of the first resistor is respectively connected with the second end of the second resistor, the first end of the third capacitor, the first end of the fourth capacitor and the cathode of the first diode, and the second end of the third capacitor, the second end of the fourth capacitor and the anode of the first diode are all grounded.
4. The audio capture output device of claim 3, wherein the analog output module comprises an analog output connector; the first power end of the analog output connector is connected with the first end of the first capacitor, the second power end of the analog output connector is connected with the first end of the second capacitor, and the input end of the analog output module is connected with the output end of the audio acquisition module.
5. The audio acquisition output device according to any one of claims 1 to 4, wherein the audio acquisition module comprises a sound acquisition unit, an audio analog amplification unit and a filtering unit which are connected in sequence;
the sound acquisition unit is used for acquiring an audio electric signal and transmitting the audio electric signal to the audio analog amplification unit;
the audio frequency analog amplification unit is used for amplifying the audio frequency electric signal to obtain an amplified signal and transmitting the amplified signal to the filtering unit;
and the filtering unit is used for filtering the amplified signal to obtain a signal to be output.
6. The audio acquisition output device according to any one of claims 1 to 4, wherein the digital output module comprises an analog-digital conversion unit, a digital signal processing unit and a network interface unit which are connected in sequence;
the analog-digital conversion unit is used for receiving the signal to be output, converting the signal to be output into a digital signal and transmitting the digital signal to the digital signal processing unit;
the digital signal processing unit is used for preprocessing the digital signal to obtain a digital output signal and transmitting the digital output signal to the network interface unit;
and the network interface unit is used for transmitting the digital output signal to a preset network.
7. The audio acquisition output device of claim 6, wherein the digital output module further comprises a microprocessor unit and a human-computer interaction unit, the microprocessor unit is respectively connected with the digital signal processing unit and the human-computer interaction unit;
the human-computer interaction unit is used for receiving an operation instruction, converting the operation instruction into an operation signal and transmitting the operation signal to the microprocessor unit;
and the microprocessor unit is used for converting the operation signal into a control signal and transmitting the control signal to the digital signal processing unit.
8. The audio acquisition output device of claim 7, wherein the digital output module further comprises a digital power supply unit, and the digital power supply unit is respectively connected with the microprocessor unit and the human-computer interaction unit;
and the digital power supply unit is used for receiving a power supply, converting the power supply into working voltage, and transmitting the working voltage to the microprocessor unit and the human-computer interaction unit.
9. The audio acquisition output device as claimed in claim 7, wherein the human-computer interaction unit comprises a keyboard and a liquid crystal display screen, a signal input end of the liquid crystal display screen is connected with the keyboard, and a signal output end of the liquid crystal display screen is connected with the microprocessor unit.
10. A microphone, characterized in that the microphone comprises an audio capture output device according to any of claims 1-9.
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| CN202120285443.5U CN214381307U (en) | 2021-02-01 | 2021-02-01 | Audio acquisition output device and microphone |
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| CN202120285443.5U CN214381307U (en) | 2021-02-01 | 2021-02-01 | Audio acquisition output device and microphone |
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