CN111263267A - Wireless audio transmitting and receiving device and multi-sound-source signal acquisition method - Google Patents

Wireless audio transmitting and receiving device and multi-sound-source signal acquisition method Download PDF

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Publication number
CN111263267A
CN111263267A CN201811461637.5A CN201811461637A CN111263267A CN 111263267 A CN111263267 A CN 111263267A CN 201811461637 A CN201811461637 A CN 201811461637A CN 111263267 A CN111263267 A CN 111263267A
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CN
China
Prior art keywords
audio
signal
receiving
transmitting
input
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Pending
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CN201811461637.5A
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Chinese (zh)
Inventor
张德明
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Beijing Saibin Science & Technology Co ltd
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Beijing Saibin Science & Technology Co ltd
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Priority to CN201811461637.5A priority Critical patent/CN111263267A/en
Publication of CN111263267A publication Critical patent/CN111263267A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones

Abstract

The invention provides a wireless audio receiving and transmitting device and a multi-sound-source acquisition method.

Description

Wireless audio transmitting and receiving device and multi-sound-source signal acquisition method
Technical Field
The invention belongs to the field of audio frequency, and particularly relates to a wireless audio frequency receiving and transmitting device and a multi-sound-source collecting method.
Background
Currently, wireless audio transmission is increasingly widely used, but the complexity of a wireless transmission system is often too high to be adequate for complex and diverse application occasions.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a wireless audio receiving and transmitting device and a multi-sound-source acquisition method.
The wireless audio transmitting and receiving device comprises an audio transmitting end and an audio receiving end which are used in a matched mode; the audio transmitting end comprises a signal input interface, and the signal input interface receives an input audio signal from a signal source; the device comprises an input signal processing unit, a signal processing unit and a signal processing unit, wherein the input signal processing unit receives an input audio signal from a signal input interface and processes the input audio signal; the wireless transmission unit is used for receiving the signal from the input signal processing unit, modulating the signal and then transmitting the signal; the first power supply unit is used for supplying electric energy to each component of the audio transmitting end; the audio receiving end comprises a wireless receiving unit, and the wireless receiving unit receives an audio signal sent by a wireless sending unit of the audio sending end and demodulates the signal; the device also comprises an output signal processing unit which receives the demodulated audio signal from the wireless receiving unit and processes the signal; the signal output interface is connected with an external audio device, receives a signal from the output signal processing unit, outputs the signal to the external audio device, and further processes the signal by the external audio device; particularly, the audio transmitting end further comprises a cascade audio signal input interface, which can be further connected with audio output interfaces of other audio receiving ends, and when other audio receiving ends are accessed, the cascade audio signal input interface receives signals from other audio receiving ends; the cascade audio signal processing unit is used for receiving the audio signal from the cascade audio signal input interface, processing the audio signal and further sending the processed signal to the output signal processing unit; at the moment, at the output signal processing unit, the unit also mixes the signal from the audio transmitting end with the signal from other audio receiving ends and then transmits the mixed signal to the signal output interface, and the signal output interface outputs the mixed signal; the audio receiving terminal also comprises a second power supply unit which supplies power for all components of the audio receiving terminal.
Further, the signal input through the signal input interface of the audio transmitting end includes a line input signal or a microphone signal; the external audio equipment connected with the signal output interface of the audio receiving end comprises a mobile terminal, a sound card, a sound console, a recorder or an earphone, wherein the output signal interface of the audio receiving end is in a plug form, the corresponding cascade signal input interface is in a jack form, and 2.4G, 5.8G or UHF and other low-delay audio transmission modes are adopted for wireless transmission between the audio transmitting end and the audio receiving end; wherein, each input or output interface of the audio transmitting end and the audio receiving end is a four-section plug or jack with the length of 3.5 mm; the third section of the 3.5mm four-section plug or jack is used for taking electricity from the outside and supplying power to the audio transmitting end or the audio receiving end or charging the first power supply unit or the second power supply unit, wherein special power supply or charging interfaces are arranged on the audio transmitting end and the audio receiving end.
Meanwhile, a multi-sound-source signal acquisition method is provided, which comprises the steps of preparing i (i is more than or equal to 2) groups of audio transceiving devices, connecting a signal output interface of an audio receiving end in the i group into a cascade audio signal input interface of an audio receiving end in the i-1 group, connecting a signal output interface of an audio receiving end in the i-1 group into a cascade audio signal input interface of an audio receiving end in the i-2 group, and so on, connecting a signal output interface of an audio receiving end in the 2 group into a cascade audio signal input interface of an audio receiving end in the 1 group; the audio transmitting end in the ith group obtains the audio signal SiThe input audio signal is sent to an audio receiving end in a wireless mode, and the audio receiving end further sends the input audio signal to the audio receiving end of the (i-1) th group; the audio transmitting end of the (i-1) th group obtains the audio signal Si-1Wirelessly transmitting the input audio signal S to the audio receiver of the group, and further transmitting the input audio signal S to the audio receiver of the groupi-1With the signal S from the ith group of audio receiving terminalsiAfter mixing, namely Si-1+SiSending the audio signal to the audio receiving end of the i-2 group, and so on, the audio sending end of the 1 st group obtains the audio signal S1Wirelessly transmitting the input audio signal S to the audio receiver of the group, and further transmitting the input audio signal S to the audio receiver of the group1With the signal S from the 2 nd group audio receiving end2+S3…+SiAfter mixing, namely S1+S2…+SiAnd outputting the data to external audio equipment connected with the 1 st group of audio receiving ends, and performing subsequent processing by the external audio equipment.
Drawings
FIG. 1 is a diagram of the internal structure and operation of the wireless audio transceiver of the present invention
FIG. 2 is a schematic diagram of multi-source signal acquisition using multiple sets of wireless audio transceivers according to the present invention
Detailed Description
The wireless audio transceiver of the present invention will be described in detail with reference to fig. 1. The wireless audio receiving and transmitting device comprises an audio transmitting end 1 and an audio receiving end 2 which are used in a matching mode. The audio transmitting end 1 includes a signal input interface 11, where the signal input interface 11 receives an input audio signal from the signal source 3, which may be a Line In (Line In) signal, such as a signal from a mobile terminal, a sound card, a sound console, or other audio playing device, or a microphone signal, such as a signal from an accessed microphone device; comprises an input signal processing unit 12 which receives an input audio signal from the signal input interface 11 and processes the input audio signal, including but not limited to gain control, equalization, etc.; a wireless transmission unit 13 which receives the signal from the input signal processing unit 12, modulates the signal and transmits the signal; and the power supply unit 14 is further included for supplying power to each component of the audio transmitting end 1. The audio receiving end 2 comprises a wireless receiving unit 21, and the wireless receiving unit 21 receives the audio signal sent by the wireless sending unit 13 from the audio sending end 1 and demodulates the signal; further comprising an output signal processing unit 22 which receives the demodulated audio signal from the wireless receiving unit 21 and processes the signal including but not limited to gain control, equalization, etc.; the audio system comprises a signal output interface 23, the output interface 23 can be connected with a signal input port of an external audio device 4, the external audio device 4 comprises, for example, a mobile terminal, a sound card, a sound console, a recorder, or an earphone, wherein the interface 23 receives a signal from the output signal processing unit 22 and outputs the signal to the external audio device 4, the external audio device 4 further processes the signal, such as recording, network sharing, continuous transmission, and the like, and when the connected external audio device is an earphone, monitoring can be performed; specifically, the audio transmitting end 2 further includes a cascade audio signal input interface 24, which can be further connected to the audio output interface of another audio receiving end, and when there is another audio receiving end, it receives the signal from the other audio receiving end; the audio signal processing unit 26 receives the audio signal from the cascade audio signal input interface 24, processes the audio signal, including but not limited to gain control, equalization, etc., and further sends the processed audio signal to the output signal processing unit 22; at this time, at the output signal processing unit 22, the unit also mixes the signal from the audio transmitting end 1 with the signal from the other audio receiving end and transmits the mixed signal to the signal output interface 23, and the mixed signal is forwarded to the accessed external audio device 4 by the signal output interface 23, which may be another audio receiving end; as shown in fig. 1, the output signal interface 23 of the audio receiving terminal 2 can be made into a plug form, and the corresponding cascade signal input interface 24 can be made into a jack form, so that the two can be directly plugged; also, a power supply unit 25 is included to supply power to the components of the audio receiving terminal.
In order to ensure high-fidelity low-delay real-time transmission between the audio transmitting terminal 1 and the audio receiving terminal 2, 2.4G, 5.8G or UHF audio transmission modes can be adopted, the specific implementation scheme is the prior art, and the implementation can be realized by using the existing modules, which is not described herein; when the audio transmitter 1 and the audio receiver 2 are connected to a signal source or an external audio device, a 3.5mm four-section plug or jack can be selected as an optimal selection for each input or output interface, and when the audio transmitter 1 and the audio receiver are connected to the signal source or the external audio device, power can be supplied through a third section of the four-section plug or jack, so as to supply power to the audio transmitter 1 or the audio receiver 2 or charge the power supply unit 14 or 25.
Fig. 2 shows a typical scenario for acquiring multiple sound source signals by using the wireless audio transceiver of the present invention, taking three groups of wireless audio transceivers as an example, where audio transmitting terminals and audio receiving terminals of each group are in one-to-one correspondence, and when multiple groups of audio transceivers are used together, different pairing frequencies are selected between each group to avoid mutual interference. Wherein, the signal output interface of the audio receiving end 2 "is connected to the cascade audio signal input interface of the audio receiving end 2 ', and the signal output interface of the audio receiving end 2 ' is connected to the cascade audio signal input interface of the audio receiving end 2, wherein, the audio transmitting end 1" receives the line input signal L3, the audio transmitting end 1 "transmits the signal L3 to the audio receiving end 2", and the audio receiving end 2 "further transmits the signal to the audio receiving end 2 '; the audio transmitting terminal 1 'receives a microphone signal M2, the audio transmitting terminal 1' transmits the signal to the audio receiving terminal 2 ', and the audio receiving terminal 2' further mixes the signal with a signal L3 from the audio receiving terminal 2 ″, i.e., M2+ L3 is transmitted to the audio receiving terminal 2; the signal received by the audio transmitter 1 is a microphone signal M1, the audio transmitter 1 transmits the signal to the audio receiver 2, and the audio receiver 2 further mixes the signal with the signal M2+ L3 from the audio receiver 2', that is, M1+ M2+ L3, and then outputs the signal through a signal output interface, and the signal can be output to an external device, for example, an earphone is used for monitoring, or other devices, for example, a mobile terminal, a recorder, a sound card, etc., are further processed by the external device, so that the external device can conveniently obtain signals from multiple sound sources by using only one channel, and finally, the multiple sound source signal acquisition is realized.
Those skilled in the art can appreciate reasonable modifications based on the disclosure of the invention, which also fall within the scope of the invention.

Claims (9)

1. A wireless audio receiving and transmitting device comprises an audio transmitting end and an audio receiving end which are used in a matching way;
the audio transmitting end is characterized by comprising a signal input interface, wherein the signal input interface receives an input audio signal from a signal source; the device comprises an input signal processing unit, a signal processing unit and a signal processing unit, wherein the input signal processing unit receives an input audio signal from a signal input interface and processes the input audio signal; the wireless transmission unit is used for receiving the signal from the input signal processing unit, modulating the signal and then transmitting the signal; the first power supply unit is used for supplying electric energy to each component of the audio transmitting end;
the audio receiving end comprises a wireless receiving unit, and the wireless receiving unit receives the audio signal sent by the wireless sending unit from the audio sending end and demodulates the signal; the device also comprises an output signal processing unit which receives the demodulated audio signal from the wireless receiving unit and processes the signal; the signal output interface is connected with an external audio device, receives a signal from the output signal processing unit, outputs the signal to the external audio device, and further processes the signal by the external audio device; particularly, the audio transmitting end further comprises a cascade audio signal input interface, which can be further connected with audio output interfaces of other audio receiving ends, and when other audio receiving ends are accessed, the cascade audio signal input interface receives signals from other audio receiving ends;
the cascade audio signal processing unit is used for receiving the audio signal from the cascade audio signal input interface, processing the audio signal and further sending the processed signal to the output signal processing unit; at the moment, at the output signal processing unit, the unit also mixes the signal from the audio transmitting end with the signal from other audio receiving ends and then transmits the mixed signal to the signal output interface, and the signal output interface outputs the mixed signal; the audio receiving terminal also comprises a second power supply unit which supplies power for all components of the audio receiving terminal.
2. The wireless audio transceiving apparatus of claim 1, wherein the signal input through the signal input interface of the audio transmitting end comprises a line input signal or a microphone signal.
3. The wireless audio transceiving apparatus of claim 1, wherein the external audio device connected to the signal output interface of the audio receiving terminal comprises a mobile terminal, a sound card, a sound mixing console, a recorder, or a headphone.
4. The wireless audio transceiver of claim 1, wherein the output signal interface of the audio receiver is in the form of a plug, and the corresponding cascade signal input interface is in the form of a jack.
5. The wireless audio transceiving apparatus of claim 1, wherein the wireless transmission between the audio transmitting end and the audio receiving end is 2.4G, 5.8G, or UHF and other low-delay audio transmission methods.
6. The wireless audio transceiving apparatus of claim 1, wherein each of the input or output interfaces of the audio transmitting terminal and the audio receiving terminal is a 3.5mm four-segment plug or jack.
7. The wireless audio transceiver of claim 6, wherein the third section of the 3.5mm four-section plug or jack is used to take power from outside, to supply power to the audio transmitting terminal or the audio receiving terminal, or to charge the first power supply unit or the second power supply unit.
8. The wireless audio transceiver of claim 1, wherein a dedicated power supply or charging interface is provided at the audio transmitting terminal and the audio receiving terminal.
9. A method for collecting multiple sound source signals comprises preparing i (i is more than or equal to 2) groups of audio transceiving devices as claimed in any one of claims 1 to 8, connecting a signal output interface of an audio receiving end in the i group to a cascade audio signal input interface of an audio receiving end in the i-1 group, connecting a signal output interface of an audio receiving end in the i-1 group to a cascade audio signal input interface of an audio receiving end in the i-2 group, and so on, connecting a signal output interface of an audio receiving end in the 2 group to a cascade audio signal input interface of an audio receiving end in the 1 group; the audio transmitting end in the ith group obtains the audio signal SiThe input audio signal is sent to an audio receiving end in a wireless mode, and the audio receiving end further sends the input audio signal to the audio receiving end of the (i-1) th group; the audio transmitting end of the (i-1) th group obtains the audio signal Si-1Wirelessly transmitting the input audio signal S to the audio receiver of the group, and further transmitting the input audio signal S to the audio receiver of the groupi-1With the signal S from the ith group of audio receiving terminalsiAfter mixing, namely Si-1+SiSending the audio signal to the audio receiving end of the i-2 group, and so on, the audio sending end of the 1 st group obtains the audio signal S1Wirelessly transmitting the input audio signal S to the audio receiver of the group, and further transmitting the input audio signal S to the audio receiver of the group1With the signal S from the 2 nd group audio receiving end2+S3…+SiAfter mixing, namely S1+S2…+SiAnd outputting the data to external audio equipment connected with the 1 st group of audio receiving ends, and performing subsequent processing by the external audio equipment.
CN201811461637.5A 2018-12-02 2018-12-02 Wireless audio transmitting and receiving device and multi-sound-source signal acquisition method Pending CN111263267A (en)

Priority Applications (1)

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CN201811461637.5A CN111263267A (en) 2018-12-02 2018-12-02 Wireless audio transmitting and receiving device and multi-sound-source signal acquisition method

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Application Number Priority Date Filing Date Title
CN201811461637.5A CN111263267A (en) 2018-12-02 2018-12-02 Wireless audio transmitting and receiving device and multi-sound-source signal acquisition method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111883186A (en) * 2020-07-10 2020-11-03 上海明略人工智能(集团)有限公司 Recording device, voice acquisition method and device, storage medium and electronic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111883186A (en) * 2020-07-10 2020-11-03 上海明略人工智能(集团)有限公司 Recording device, voice acquisition method and device, storage medium and electronic device

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