KR20130123715A - Vehicular muti-channel audio transmitter/receiver method, ethernet telecommunication muti-channel mic module and the controlling method thereof - Google Patents

Vehicular muti-channel audio transmitter/receiver method, ethernet telecommunication muti-channel mic module and the controlling method thereof Download PDF

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Publication number
KR20130123715A
KR20130123715A KR1020120047053A KR20120047053A KR20130123715A KR 20130123715 A KR20130123715 A KR 20130123715A KR 1020120047053 A KR1020120047053 A KR 1020120047053A KR 20120047053 A KR20120047053 A KR 20120047053A KR 20130123715 A KR20130123715 A KR 20130123715A
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KR
South Korea
Prior art keywords
channel
ethernet
voice signal
voice
head unit
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Application number
KR1020120047053A
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Korean (ko)
Inventor
곽영춘
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현대모비스 주식회사
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Priority to KR1020120047053A priority Critical patent/KR20130123715A/en
Publication of KR20130123715A publication Critical patent/KR20130123715A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/28—Flow control; Congestion control in relation to timing considerations
    • H04L47/283—Flow control; Congestion control in relation to timing considerations in response to processing delays, e.g. caused by jitter or round trip time [RTT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14—Multichannel or multilink protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/326—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for microphones

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Security & Cryptography (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Disclosed are an automotive multi-channel voice transmission/reception device, an Ethernet communication multi-channel microphone module, and an Ethernet communication multi-channel microphone control method. The automotive multi-channel voice transmission/reception device according to one aspect of the present invention includes the following components: a microphone module which individually converts multiple voice signals obtained from multiple microphones into digital signals, mixes the digital signals, converts the digital signals into an Ethernet packet, and transmits the Ethernet packet through an Ethernet interface; and a head unit which receives the Ethernet packet through the Ethernet interface, extracts the multiple voice signals, and divides the multiple voice signals into voice signals of each channel corresponding to each of the multiple microphones. [Reference numerals] (130) First DSP;(140) First physical layer communication unit;(210) Second physical layer communication unit;(AA) Second DSP;(BB) SINGLE TWISTED-PAIR CABLE Ethernet interface

Description

Vehicle multi-channel voice transceiver, Ethernet communication multi-channel microphone module and control method {Vehicular Muti-channel Audio Transmitter / Receiver Method, Ethernet Telecommunication Muti-channel Mic Module and the controlling Method

The present invention relates to a vehicle microphone, and more particularly, to a vehicle multi-channel voice transceiver, an Ethernet communication multi-channel microphone module and a control method thereof that can communicate with a relatively simple interface.

In general, the vehicle microphone is connected to the head unit via a wired interface, for example, the interface of the PCMCIA standard.

Conventional vehicle microphones are connected to the head unit and the vehicle shield line to transmit analog signals to the head unit, or to synchronize the head unit with the sync, clock, data, and ground. Connected to a signal line, and transmitted a digital signal of PCMCIA (Personal Computer Memory Card International Association) standard to the head unit.

By the way, the length of the wiring between the conventional car microphone and the head unit is at least 5m or more, and there is an inconvenience in that the shield wire must be used due to the electric field noise of the vehicle environment.

Therefore, the conventional car microphone has to pay close attention to the ground point of the shield line when transmitting analog signals, and to use a lot of signal lines when transmitting digital signals, clock loss may occur during transmission, and clock signals Excessive lines could adversely affect vehicle EMI.

SUMMARY OF THE INVENTION The present invention has been made in view of the above technical background, and provides a vehicle multichannel voice transceiver, an Ethernet communication multichannel microphone module, and a method of controlling the same. It is for that purpose.

Another object of the present invention is to provide a vehicle multi-channel voice transceiver, an Ethernet communication multi-channel microphone module and a control method thereof capable of controlling a multi-channel microphone through an Ethernet interface.

According to an aspect of the present invention, there is provided a vehicle multi-channel voice transceiving apparatus comprising: a microphone module for digitally converting and mixing a plurality of voice signals acquired from a plurality of microphones, converting them into Ethernet packets, and transmitting them to an Ethernet interface; And a head unit which receives the Ethernet packet through the Ethernet interface, extracts the plurality of voice signals, and separates the plurality of voice signals into voice signals of respective channels corresponding to each of the plurality of microphones. It is done.

According to another aspect of the present invention, an Ethernet communication multichannel microphone module includes: a plurality of microphones for respectively obtaining a plurality of voice signals; An analog to digital converter for digitally converting the plurality of voice signals; A digital signal processor (DSP) for generating a multi-channel voice signal by mixing the plurality of digitally converted voice signals; And a physical layer communication unit converting the multi-channel voice signal into an Ethernet packet and transmitting the multi-channel voice signal to the head unit through an Ethernet interface.

According to another aspect of the present invention, a method for controlling an Ethernet communication multichannel microphone of a head unit includes multichannel voice signals acquired from a plurality of microphones, digitally converted and mixed, and transmitted in an Ethernet packet through an Ethernet interface. Receiving; Extracting the multichannel voice signal from the Ethernet packet; Dividing the multi-channel voice signal into voice signals of respective channels; Checking whether there is a distorted voice signal among the voice signals of each channel; And instructing the multi-channel microphone to reduce the digital gain for the channel corresponding to the distorted voice signal if there is the distorted voice signal.

According to the present invention, since the multi-channel voice signals from a plurality of microphones are transmitted and received through an Ethernet interface available with other electrical components of the vehicle, the signal lines between the microphone and the head unit can be reduced, and vehicle wiring can be simplified. There is an advantage.

In addition, since the present invention uses an Ethernet interface, robustness against vehicle noise can be ensured, there is no need to use a shield wire, and there is no need to worry about the position of the ground point of the shield wire.

1 is a block diagram showing a vehicle multi-channel voice transmission and reception apparatus of the present invention.
2 is a flowchart illustrating a multichannel microphone control method of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms " comprises, " and / or "comprising" refer to the presence or absence of one or more other components, steps, operations, and / Or additions.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 is a block diagram showing a vehicle multi-channel voice transmission and reception apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the multi-channel voice communication apparatus 10 for a vehicle according to an exemplary embodiment of the present invention includes a microphone module 100 and a head unit 200.

The microphone module 100 digitally converts and mixes a plurality of voice signals obtained from a plurality of microphones, converts them into Ethernet packets, and transmits them through an Ethernet interface.

The microphone module 100 includes a plurality of microphones 110, an analog-digital converter 120, a first DSP 130, and a first physical layer communication unit 140. Hereinafter, each part of the microphone module 100 will be described.

The plurality of microphones 110 are disposed in the vehicle, respectively, and acquire voice signals in the vicinity thereof, and may be, for example, ECM microphones.

The analog-digital converter 120 digitally converts a plurality of analog voice signals from the plurality of microphones 110, respectively.

The first DSP 130 mixes a plurality of digital voice signals to generate a multi-channel voice signal conforming to the MII (Media Indepenet Interface) standard. In this case, the plurality of digital voice signals may be mixed by the application layer of the first DSP 130.

The first physical layer communication unit 140 converts the multi-channel voice signal into an Ethernet packet and transmits the multi-channel voice signal to the head unit 200 through the Ethernet interface. In this case, the first physical layer communication unit 140 may divide the multi-channel voice signal of a larger size into a predetermined unit and divide the plurality of Ethernet packets into a plurality of Ethernet packets for transmission.

The head unit 200 receives an Ethernet packet through an Ethernet interface, extracts a multichannel voice signal from the Ethernet packet, and separates the multichannel voice signal into a voice signal of each channel.

The head unit 200 includes a second physical layer communication unit 210 and a second DSP 220. Hereinafter, each part of the head unit 200 is demonstrated.

The second physical layer communication unit 210 receives an Ethernet packet through an Ethernet interface and generates a multi-channel voice signal from the Ethernet packet. In this case, the second physical layer communication unit 210 may generate a multi-channel voice signal by combining the multi-channel voice signals carried in the Ethernet packet.

The second DSP 220 confirms the IP of the transmission destination, and separates and analyzes the multi-channel voice signal into the voice signal of each channel. In this case, the second DSP 220 may classify the multi-channel voice signal into a voice signal for each channel by using the IP of the transmission destination.

The second DSP 220 checks whether the signal is distorted, and if distortion occurs in at least one of the voice signals of each channel, the second DSP 220 provides the microphone module 100 with a digital gain for the voice signal of the at least one channel. Instruct to reduce.

The second DSP 220 extracts a multi-channel voice signal from the Ethernet packet or if an overflow occurs while dividing the multi-channel voice signal into the voice signal of each channel, the second DSP 220 delays the data delay to the microphone module 100. Instruct. At this time, the first DSP 130 receives the instruction from the head unit 200, delays the generation time of the multi-channel voice signal, or delays the transfer of the multi-channel voice signal to the first physical layer communication unit 140. This can delay the transmission of Ethernet packets.

On the other hand, when the first DSP 130 is instructed to adjust the digital gain from the head unit 200, the first DSP 130 adjusts the gain for the voice signal of the channel corresponding to the indication, and delays the transmission of the Ethernet packet from the head unit 200. When instructed to do so, it delays the transmission of the Ethernet packet for a preset time and then transmits it.

Hereinafter, a multichannel microphone control method according to an exemplary embodiment of the present invention will be described with reference to FIG. 2. 2 is a flowchart illustrating a multi-channel microphone control method according to an embodiment of the present invention.

2, the head unit 200 receives the Ethernet packet transmitted from the microphone module 100 through the Ethernet interface (S210).

The head unit 200 generates a multi-channel voice signal from the Ethernet packet (S220). In this case, the head unit 200 may extract a multi-channel voice signal transmitted by being divided into Ethernet packets, and then combine them to generate a multi-channel voice signal.

The head unit 200 generates a voice signal of each channel by classifying the multi-channel voice signal for each channel (S230).

The head unit 200 checks whether there is distortion in the voice signal of each channel (S240). At this time, the head unit 200 may determine that the voice signal of each channel is distorted when the portion of the voice signal of each channel is longer than a predetermined value for a predetermined time.

If there is distortion in the voice signal of each channel, the head unit 200 instructs the microphone module 100 to attenuate the digital gain of the voice signal of the distorted channel (S250).

On the other hand, the head unit 200 performs a process of recording (storing) the voice signal of each channel which is separated from each other, or transmitting the voice signal to another communication interface.

Meanwhile, when an overflow occurs in at least one of receiving an Ethernet packet, generating a multichannel voice signal, generating a voice signal of each channel, and checking distortion, the head unit 200 delays a transmission delay to the microphone module 100. Instruct. In this case, the microphone module 100 may delay the transmission of the Ethernet packet or delay the generation of the multi-channel voice signal.

As such, the present invention transmits and receives multi-channel voice signals from a plurality of microphones through an Ethernet interface available with other electrical components of the vehicle, thereby reducing signal lines between the microphone and the head unit and simplifying vehicle wiring. There is an advantage.

In addition, since the present invention uses an Ethernet interface, robustness against vehicle noise can be ensured, there is no need to use a shield wire, and there is no need to worry about the position of the ground point of the shield wire.

While the present invention has been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the above-described embodiments. Those skilled in the art will appreciate that various modifications, Of course, this is possible. Accordingly, the scope of protection of the present invention should not be limited to the above-described embodiments, but should be determined by the description of the following claims.

Claims (8)

A microphone module for digitally converting and mixing a plurality of voice signals acquired from a plurality of microphones, converting them into Ethernet packets, and converting them into Ethernet packets and transmitting them to an Ethernet interface; And
The head unit receives the Ethernet packet through the Ethernet interface, extracts the plurality of voice signals, and separates the plurality of voice signals into voice signals of respective channels corresponding to each of the plurality of microphones.
Vehicle multi-channel voice transmission and reception device comprising a. The method of claim 1, wherein the head unit,
And if the overflow occurs during extraction and separation of the plurality of voice signals, instructing the microphone module to delay and transmit the Ethernet packet. The method of claim 1, wherein the head unit,
And if the distortion occurs in at least one of the voice signals of the respective channels, instructing the microphone module to reduce the digital gain of the voice signals of the at least one channel. A plurality of microphones for respectively obtaining a plurality of audio signals;
An analog to digital converter for digitally converting the plurality of voice signals;
A digital signal processor (DSP) for generating a multi-channel voice signal by mixing the plurality of digitally converted voice signals; And
A physical layer communication unit for converting the multi-channel voice signal into an Ethernet packet and transmitting to the head unit via an Ethernet interface
Ethernet communication multi-channel microphone module comprising a. The method of claim 4, wherein the DSP,
Ethernet communication multi-channel microphone module for generating the multi-channel voice signal in accordance with the Media Indepenet Interface (MII) standard. The method of claim 4, wherein the DSP,
When the digital gain adjustment is instructed by the head unit, the gain of the voice signal of the channel corresponding to the indication is adjusted, and when the transmission delay of the Ethernet packet is instructed by the head unit, the transmission of the Ethernet packet is delayed. Ethernet communication multichannel microphone module. A method for controlling an Ethernet communication multichannel microphone of a head unit,
Receiving, via the Ethernet interface, a multi-channel voice signal, each obtained from a plurality of microphones, digitally converted, mixed, and transmitted in an Ethernet packet;
Extracting the multi-channel voice signal from the Ethernet packet
Dividing the multi-channel voice signal into voice signals of respective channels;
Checking whether there is a distorted voice signal among the voice signals of each channel; And
Instructing the multichannel microphone to reduce the digital gain for the channel corresponding to the distorted voice signal if there is the distorted voice signal.
Ethernet communication multi-channel microphone control method comprising a. The method of claim 7, wherein
In the receiving, extracting, separating, and checking, instructing the multichannel microphone to delay transmission of the Ethernet packet when an overflow occurs.
Ethernet communication multi-channel microphone control method further comprising.
KR1020120047053A 2012-05-03 2012-05-03 Vehicular muti-channel audio transmitter/receiver method, ethernet telecommunication muti-channel mic module and the controlling method thereof KR20130123715A (en)

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KR1020120047053A KR20130123715A (en) 2012-05-03 2012-05-03 Vehicular muti-channel audio transmitter/receiver method, ethernet telecommunication muti-channel mic module and the controlling method thereof

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Application Number Priority Date Filing Date Title
KR1020120047053A KR20130123715A (en) 2012-05-03 2012-05-03 Vehicular muti-channel audio transmitter/receiver method, ethernet telecommunication muti-channel mic module and the controlling method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101490409B1 (en) * 2014-02-13 2015-02-05 현대자동차주식회사 Control unit for in-vehicle ethernet and method for controlling therof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101490409B1 (en) * 2014-02-13 2015-02-05 현대자동차주식회사 Control unit for in-vehicle ethernet and method for controlling therof
US9842565B2 (en) 2014-02-13 2017-12-12 Hyuandai Motor Company Controller for in-vehicle ethernet and control method thereof

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