CN211655258U - Audio transmission line and audio acquisition system - Google Patents
Audio transmission line and audio acquisition system Download PDFInfo
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- CN211655258U CN211655258U CN202020098437.4U CN202020098437U CN211655258U CN 211655258 U CN211655258 U CN 211655258U CN 202020098437 U CN202020098437 U CN 202020098437U CN 211655258 U CN211655258 U CN 211655258U
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Abstract
The utility model relates to an audio transmission line and audio acquisition system, which relates to the field of audio signal transmission and solves the problem that the audio transmission line for transmitting the audio signal of the existing mobile phone to the vehicle-mounted sound equipment for playing can not realize the reverse transmission of the sound acquired by the wireless microphone to the mobile phone; the transmission line comprises a transmission line body, wherein one end of the transmission line body is a first interface, and the other end of the transmission line body is a second interface; the first interface is used for connecting the collected audio signal end to receive the collected audio signal and output a first interface audio signal, and the second interface is connected with the audio using end to input the received first interface audio signal into the audio using end; the utility model discloses can make things convenient for people to realize being shot the person and shooting person's own sound when live remote video and together record and make things convenient for wireless microphone's information transmission.
Description
Technical Field
The utility model belongs to the technical field of the audio signal transmission and specifically relates to an audio transmission line and audio acquisition system are related to.
Background
The cable for transmitting audio signals used in music playing devices is generally called an audio transmission line, and is a cylinder which is straight overall.
The existing wireless microphone suitable for the fields of street interview, broadcast television, micro-video shooting, teaching video, live broadcast interview and the like generally needs at least one receiving end and one transmitting end to transmit audio signals between a photographer and the photographer by wireless transmission in most application scenes because a camera keeps a certain distance from the photographer.
The existing more and more live broadcasts are used for shooting remote videos through mobile phones, but remote sounds cannot be collected, at this time, the sounds can be collected through a wireless microphone, and then the audio is transmitted to the mobile phones through an audio data line, so that the sounds of the shot persons can be collected, and the sounds of the shot persons can be recorded together. However, most of the existing wireless microphones adopt wireless transmission, but wireless transmission is easily limited by frequency band and signal interference, so it is urgently needed to provide an audio transmission line to realize reverse transmission of the sound collected by the wireless microphone to the mobile phone, so that people can record the sound of the photographer and the photographer himself together when live broadcasting a long-distance video, and the audio transmission line has an improved space.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an audio transmission line can make things convenient for people to realize when live remote video that the sound of being shot person and shooting person oneself is together recorded.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
an audio transmission line comprises a transmission line body, wherein one end of the transmission line body is a first interface, and the other end of the transmission line body is a second interface; the first interface is used for connecting the collected audio signal end to receive the collected audio signal and output a first interface audio signal, and the second interface is connected with the audio using end to input the received first interface audio signal into the audio using end.
Through adopting above-mentioned technical scheme, the audio signal that first interface will gather reachs the second interface through the transmission line body, and the second interface inputs this audio signal to the audio frequency user end, and then gathers the sound through wireless microphone earlier in the live broadcast, then transmits the audio frequency to the cell-phone through the audio data line, makes things convenient for people to realize being recorded by shooter and shooter's own sound together when live remote video.
Preferably, the first interface is an audio input terminal which is a 3.5mm interface, and the second interface is a TYPE-C terminal.
Preferably, the audio input terminal is a binaural input terminal;
the audio input terminal is provided with three contacts, wherein one contact is grounded, and the other two contacts are respectively a left channel audio and a right channel audio.
Through adopting above-mentioned technical scheme, audio input terminal is the setting of binaural input terminal for the sound that the receiver heard has the third dimension.
Preferably, the output mode of the left channel audio and the right channel audio is a mixing mode output.
By adopting the technical scheme, the output modes of the left channel audio and the right channel audio are output in the sound mixing mode, and the external noise is random, so that the signal to noise ratio is increased in the sound mixing mode, and the audio quality is improved.
Preferably, the output modes of the left channel audio and the right channel audio are output in an independent two-channel mode.
By adopting the technical scheme, the output modes of the left channel audio and the right channel audio are set to be output in an independent dual-channel mode, so that a user can select the left channel audio mode to output and the right channel audio mode to output independently according to the requirement of the user on the audio quality.
Preferably, the method comprises the following steps:
and one end of the gain module is coupled to the first interface so as to receive the audio signal of the first interface and output a gain audio signal, and the other end of the gain module is coupled to the second interface, and the second interface inputs the received gain audio signal to an audio using end.
By adopting the technical scheme, the power energy of the audio signal in the transmission process is increased and the attenuation of the audio signal is reduced due to the arrangement of the gain module.
Preferably, the method further comprises the following steps:
one end of the conversion module is coupled to the gain module to receive the gain audio signal and output a digital audio signal, and the other end of the conversion module is coupled to the second interface, and the second interface inputs the received digital audio signal to an audio using end.
By adopting the technical scheme, the conversion module is arranged to convert the audio signal from an analog signal to a digital signal, so that the fault tolerance of the audio signal is reduced, and the accuracy is improved; meanwhile, the digital signal occupies a small space compared with the analog signal, so that the utilization rate of the channel is improved.
Preferably, the transmission line body is made of a bare metal wire coated fiber core wire.
Through adopting above-mentioned technical scheme, cladding fibre heart yearn, compare in current product not only the resistance obviously reduces, also has a very big improvement to silk thread performance, can more effectively transmit the signal, has guaranteed the recovery condition of tone quality and tone quality.
A second object of the utility model is to provide an audio acquisition system can make things convenient for people to realize when live remote video that the sound of being shot person and shooting person oneself is together recorded.
The above technical purpose of the present invention can be achieved by the following technical solutions:
an audio acquisition system comprising a microphone, a transmitter coupled to the microphone, at least one receiver coupled to the transmitter; the audio transmission line and the audio using end are also included; the number of the audio transmission lines is the same as that of the receivers, the first interfaces of the audio transmission lines are connected with the receivers, and the second interfaces of the audio transmission lines are connected with the audio using ends.
Through adopting above-mentioned technical scheme, at the microphone, be coupled in the transmitter of microphone, be coupled in under the cooperation of at least one receiver of transmitter, the audio signal that first interface will gather arrives the second interface through the transmission line body, the second interface with this audio signal input to audio frequency user end, and then earlier through wireless microphone with sound collection when live, then transmit the audio frequency to the cell-phone through the audio data line, make things convenient for people to realize when the long-range video that the sound of shooter and shooter oneself is recorded together.
To sum up, the utility model discloses a beneficial technological effect does:
the voice recording method and the voice recording device are convenient for transmitting information in the wireless microphone, and are more suitable for recording voices of a shot person and the shot person when people live remote videos.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.
Fig. 1 is a system structure diagram of the audio acquisition system of the present invention.
Fig. 2 is a schematic circuit diagram of the audio transmission line of the present invention.
In the figure, 1, microphone; 2. a transmitter; 3. a receiver; 4. an audio using end; 5. a first interface; 6. a second interface; 7. a gain module; 8. and a conversion module.
Detailed Description
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 work belong to the protection scope of the present invention.
The present invention will be described in further detail with reference to the accompanying fig. 1-2.
Example one
The utility model also discloses an audio transmission line, which comprises a transmission line body, wherein one end of the transmission line body is a first interface 5, and the other end is a second interface 6; the first interface 5 is used for connecting the collected audio signal terminal to receive the collected audio signal and output a first interface audio signal, and the second interface 6 is connected with the audio user terminal 4 to input the received first interface audio signal into the audio user terminal 4. Here, the audio user terminal 4 may be an android phone, an apple phone, a single lens reflex camera, a micro single camera, a video camera, a DV recorder, or the like.
The audio signal that first interface 5 will gather arrives second interface 6 through the transmission line body, and second interface 6 and with this audio signal input to audio frequency user end 4, and then earlier come through wireless microphone 1 with sound collection in the live broadcast, then transmit the audio frequency to the cell-phone through the audio data line, make things convenient for wireless microphone's signal transmission, more be applicable to people and realize being recorded together by shooter and shooter's own sound when live remote video.
The first interface 5 is an audio input terminal and is a 3.5mm interface, and the second interface 6 is a TYPE-C terminal. The audio input terminal is a dual-channel input terminal; the audio input terminal is provided with three contacts, wherein one contact is grounded, and the other two contacts are respectively a left channel audio and a right channel audio. The two-channel arrangement provides a stereoscopic impression of the sound heard by the recipient. As shown in the figure, 1 is the left channel, 2 is the right channel, and 3 is the common end.
In one embodiment, the output mode of the left channel audio and the right channel audio is a remix mode output. Because the external noise is random, the output mode of the left channel audio and the right channel audio is the output of the sound mixing mode, the signal to noise ratio is increased, and the audio quality is improved. In another embodiment, the output modes of the left channel audio and the right channel audio of the audio transmission line can be output in an independent dual-channel mode; the user can select the left channel audio mode output and the right channel audio mode to output independently according to the requirement of the user on the audio quality.
The audio transmission line further includes: one end of the gain module 7 is coupled to the first interface 5 for receiving the first interface audio signal and outputting a gain audio signal, and the other end is coupled to the second interface 6, and the second interface 6 inputs the received gain audio signal to the audio user terminal 4. Further comprising: one end of the conversion module 8 is coupled to the gain module 7 for receiving the gain audio signal and outputting a digital audio signal, and the other end is coupled to the second interface 6, and the second interface 6 inputs the received digital audio signal to the audio user terminal 4.
The gain module 7 is arranged to increase the power energy of the audio signal in the transmission process and reduce the attenuation of the audio signal; the conversion module is arranged to convert the audio signal from an analog signal to a digital signal, so that the fault tolerance rate of the audio signal is reduced, and the accuracy is improved; meanwhile, the digital signal occupies a small space compared with the analog signal, so that the utilization rate of the channel is improved.
In yet another embodiment, the audio transmission line may not include the gain block 7 but include: one end of the conversion module 8 is coupled to the first interface 5 to receive the first interface audio signal and output a digital audio signal, and the other end is coupled to the second interface 6, and the second interface 6 inputs the received digital audio signal to the audio user terminal 4. Under the condition that the user has no strict requirement on the audio quality, the gain module 7 can be saved to properly reduce the cost of the audio transmission line, so that the consumer can select the appropriate audio transmission line.
The audio transmission line, the transmission line body make for bare metal wire cladding fibre heart yearn also the transmission wire rod in the attached drawing, cladding fibre heart yearn, compare in current product not only resistance obviously reduces, has also had a very big improvement to silk thread performance, plays the effect of shielding wire rod, effectively avoids audio signal to receive external signal interference, can more effectively transmit signal, has guaranteed the reduction condition of tone quality and tone quality.
Referring to the circuit diagram of fig. 2, the two-channel input terminal, 1 is a left channel, 2 is a right channel, and 3 is a common terminal, which are described in sequence from left to right; and the following are a GAIN module 7(GAIN), a conversion module 8(AD conversion), a mode control (audio mixing/independent dual channel), a USB-Interface (editing the audio digital signal into a USB-V1.1/2.0 standard data mode), and a TYPE-C terminal (USB connector 3.1TYPE-C male). Wherein, the GAIN module 7(GAIN) is a GAIN chip (GAIN chip), and can select a GAIN chip with the model number of OPA 2227; the conversion module 8(AD conversion) is an AD conversion chip, and a civil grade AD1380KD16 bit conversion chip can be selected; the power supply of each module adopts the conventional method of getting power from a TYPE-C terminal; the dual channel input terminal uses a common 3.5mm interface. For those skilled in the art, a 3.5mm Interface, a gain chip, an AD conversion chip, a mixing/independent dual channel, a USB-Interface (editing an audio digital signal into a USB-V1.1/2.0 standard data pattern), and a TYPE C Interface, which are commonly used in a circuit, are common knowledge, and their connection modes are not described herein again.
Example two
Referring to fig. 1, the present invention discloses an audio acquisition system, which includes a microphone 1, a transmitter 2 coupled to the microphone 1, and at least one receiver 3 coupled to the transmitter 2; the device also comprises an audio transmission line and an audio using end 4; the number of the audio transmission lines is the same as that of the receivers 3, the first interfaces 5 of the audio transmission lines are connected with the receivers 3, and the second interfaces 6 of the audio transmission lines are connected with the audio using terminals 4. The audio using terminal 4 can be an android mobile phone, an apple mobile phone, a single lens reflex camera, a micro single camera, a video camera, a DV video recorder and other equipment, wherein the transmitter 2 and the receiver 3 are used in a matched manner and are Kacallap series.
Audio acquisition systems can be divided into three use cases. The first method comprises the following steps: the transmitter 2 is carried by a speaking person, the receiver 3 can be mounted at the shooting equipment through a bracket, the receiver 3 is connected into the shooting equipment through an audio transmission line, and the shooting equipment at the position is an audio using end 4. The emitter 2 is connected with the microphone 1 in a wired mode, and the microphone 1 can be a collar clamp microphone (when the microphone is installed at a collar in use), so that the audio acquisition system realizes that a person speaks in a shooting lens, or the voice of a shot person and the voice of the shot person are recorded together.
And the second method comprises the following steps: the two transmitters 2, the receiver 3, the transmitter 2 and the receiver 3 are wirelessly connected, and UHF high-fidelity communication technology is adopted, the receiver 3 can be arranged at the shooting equipment through a bracket, the receiver 3 is connected into the shooting equipment through an audio transmission line, and the shooting equipment is an audio using terminal 4. The number of the transmitters 2 is the same as that of the microphones 1, two persons speak at the time, each person is provided with one transmitter 2 and one microphone 1 which is connected with the transmitter 2 in a wired mode, and the microphone 1 can be a neckclip microphone (a device is arranged at a neckline when in use), so that the audio acquisition system realizes that the two persons speak in a shooting lens.
And thirdly, one or two transmitters 2 are in butt joint with a plurality of receivers 3, for example, the radio receiver is suitable for a plurality of mobile phones to shoot the same scene through live broadcasting and a plurality of positions. The first, second and third use cases all require the transmitter 2 and the receiver 3 to use the same channel and frequency.
The audio acquisition system comprises the following operation steps:
1. installing batteries in battery bins of the transmitter 2 and the receiver 3, and turning on a power switch;
2. the emitter 2 and the receiver 3 enter a working state, and the channel is adjusted to ensure that the emitter 2 and the receiver 3 use the same channel;
3. the microphone 1 is plugged into the interface of the transmitter 2, ensuring that the pick-up distance of the microphone 1 is kept between 15 and 20cm as far as possible.
4. The receiver 3 is mounted on the photographing apparatus (by a bracket, or a simple jig) and the receiver 3 is fixed and stabilized.
5. Inserting a first interface 5 of an audio transmission line into an output socket of the receiver 3, inserting a second interface 6 of the audio transmission line into the shooting equipment, and adjusting the appropriate output volume to start recording; if the photographer speaks at the moment, the voice of the photographed person and the voice of the photographer can be recorded together. The method is suitable for the fields of street interview, broadcast television, micro-shadow shooting, teaching video, live broadcast interview and the like.
Wherein, the audio transmission line that adopts among the audio acquisition system is not the audio transmission line among the prior art, but the utility model discloses the audio transmission line who protects.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. An audio transmission line comprises a transmission line body, wherein one end of the transmission line body is provided with a first interface (5), and the other end of the transmission line body is provided with a second interface (6); the method is characterized in that: the first interface (5) is used for connecting the collected audio signal end to receive the collected audio signal and output a first interface audio signal, and the second interface (6) is connected with the audio using end (4) to input the received first interface audio signal into the audio using end (4).
2. The audio transmission line of claim 1, wherein: the first interface (5) is an audio input terminal and is a 3.5mm interface, and the second interface (6) is a TYPE-C terminal.
3. The audio transmission line of claim 2, wherein: the audio input terminal is a dual-channel input terminal;
the audio input terminal is provided with three contacts, wherein one contact is grounded, and the other two contacts are respectively a left channel audio and a right channel audio.
4. The audio transmission line of claim 3, wherein: and the output modes of the left channel audio and the right channel audio are output in a mixing mode.
5. The audio transmission line of claim 3, wherein: and the output modes of the left channel audio and the right channel audio are output in an independent dual-channel mode.
6. The audio transmission line of claim 1, wherein: the method comprises the following steps:
and a gain module (7), one end of which is coupled to the first interface (5) to receive the first interface audio signal and output a gain audio signal, and the other end of which is coupled to the second interface (6), wherein the second interface (6) inputs the received gain audio signal to the audio user terminal (4).
7. The audio transmission line of claim 6, wherein: further comprising:
and the conversion module (8) is coupled to the gain module (7) at one end to receive the gain audio signal and output a digital audio signal, and is coupled to the second interface (6) at the other end, and the second interface (6) inputs the received digital audio signal into the audio using end (4).
8. The audio transmission line of claim 1, wherein: the method comprises the following steps:
and the conversion module (8) is coupled to the first interface (5) at one end to receive the first interface audio signal and output a digital audio signal, and is coupled to the second interface (6) at the other end, and the second interface (6) inputs the received digital audio signal into the audio using end (4).
9. The audio transmission line of claim 1, wherein: the transmission line body is made of bare metal wires coated with fiber core wires.
10. An audio acquisition system, characterized by: comprises a microphone (1), a transmitter (2) coupled to the microphone (1), at least one receiver (3) coupled to the transmitter (2); further comprising an audio transmission line according to any one of claims 1 to 9, and an audio user terminal (4); the number of the audio transmission lines is the same as that of the receivers (3), the first interfaces (5) of the audio transmission lines are connected with the receivers (3), and the second interfaces (6) of the audio transmission lines are connected with the audio using ends (4).
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| CN202020098437.4U CN211655258U (en) | 2020-01-16 | 2020-01-16 | Audio transmission line and audio acquisition system |
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| CN202020098437.4U CN211655258U (en) | 2020-01-16 | 2020-01-16 | Audio transmission line and audio acquisition system |
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| CN211655258U true CN211655258U (en) | 2020-10-09 |
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