CN105139860A - Communication equipment and running method thereof - Google Patents
Communication equipment and running method thereof Download PDFInfo
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- CN105139860A CN105139860A CN201510301094.0A CN201510301094A CN105139860A CN 105139860 A CN105139860 A CN 105139860A CN 201510301094 A CN201510301094 A CN 201510301094A CN 105139860 A CN105139860 A CN 105139860A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
- G10L25/60—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination for measuring the quality of voice signals
Abstract
For operating a communication system (1) in a vehicle (S1) is detected, a first input signal (ES1) at a first signal detection means which includes a speech signal (SP) of a speaker (S). A work based on output signal (AS) will be shipped by means of the communication system (1) to a receiver. Here, at least, an optimization value (SOV, SOD) is determined with respect to at least one optimization criterion for the output signal (AS). Depending on the optimization value (SOV, SOD) a Voice clarity display (3) for the speaker (S) is driven.
Description
Technical field
The present invention relates to a kind of method for operational communications equipment, communication facilities especially in means of transport, the invention still further relates to a kind of communication facilities, this communication facilities, in particular for means of transport, can perform the method by this communication facilities.
Background technology
Method for running communication facilities, especially telephone plant in motor vehicle is known for a long time.Such communication facilities is equipped with hands-free device usually, and this often and other system of automobile such as in order to export broadcast program, music, vehicle servicing unit notice etc. be coupled in common multimedia system, make to use identical input media and output unit or loudspeaker.
From motor vehicle, make a phone call usually there is following problem: it is undesirable that technology connects.Further, particularly when using hands-free device, neighbourhood noise can be rung relatively.If technical battery takes over difference or noise is excessively strong, this may cause, and talker is no longer understood by interlocutor.There is the measure of many raising quality of connection or filtering noise as far as possible well.In vehicle or on phone, have instruction in addition, the usual whereby form with bar chart indicates to user, and how good operational mobile telephone network be.But this instruction is pointing technology quality of connection only.But talker does not know actual speech quality, the sound intensity or illustrative of his speech.Additionally by the bad quality of connection of instruction or by high noise, talker often unnecessarily improves the speech sound intensity.But perhaps this can not improve speech quality due to technical limitation.On the other hand, when improving the speech sound intensity, talker loses its privacy usually.Therefore talker may expect in many cases, makes a phone call to secret, and other staff around can not hear phone together.In order at least make a phone call slightly in confidence, the personnel of making a phone call can use telephone receiver.In the case, the signal of at least input of interlocutor can not be heard for the other staff in vehicle.But the words that the telephoner in vehicle says always can be understood, when he is due to many noises or when improving the sound intensity because the bad technology of instruction connects, especially true.
Summary of the invention
The object of the invention is to, propose a kind of method for operational communications equipment of improvement and a kind of corresponding communication facilities, this communication facilities, in particular for motor vehicle, at least can reduce the problems referred to above whereby.
Described object is solved by the individual features of independent claims.Dependent claims and follow-up explanation comprise favourable further scheme of the present invention, and especially a class claim correspondingly can improve the dependent claims of another kind of claim.Within the scope of the invention, the feature of different embodiment also can be combined into new embodiment.
Pressing in the method for operational communications equipment of the present invention, the first signal supervisory instrument obtains the first input signal, and this first input signal comprises the voice signal of talker.This signal supervisory instrument can be such as single microphone, and preferably near talker, but can be also microphone array, shotgun microphone or analog, it be towards talker.Only conclusive, the voice signal of talker can be obtained as far as possible well by signal supervisory instrument.
So send based on the output signal of input signal to recipient by means of communication facilities.This output signal can be such as input signal filtered in a suitable manner, wiping out background noise and other ground unrest as much as possible from input signal.Therefore this output signal also can be called " useful signal ".So communication facilities sends with the form be applicable to and outputs signal useful signal in other words, such as mode is, first it is encoded in the mode be applicable to for transmission channel.
Preferably relate to mobile communication equipment, it is particularly preferably used in means of transport.Can be arbitrary means of transport at this, land vehicle, marine communication means and aircraft.The particularly preferably motor vehicle of land.In this mobile communication equipment, the transmission of output signal is carried out via antenna usually.But this does not get rid of the present invention and is used in fixed communication facilities yet, and these fixed communication facilitiess such as also can have cable connection or analog.
Now according to the present invention for output signal before transmitting in other words before real transmission prepares (such as carrying out to transmit encoding etc.), determine at least one current optimal value about at least one Optimality Criteria.So control according to this optimal value the voice-optimizing indicator being used for talker." optimal value " is interpreted as the numerical value that directly or indirectly can be affected by talker within the scope of the present invention at this, and this numerical value should be optimized about Optimality Criteria.Have only relevant to talker itself optimal value at this, the such as sound intensity or pitch is tone height in other words.Can be directly called below " elementary optimal value " by the optimal value that talker such as affects by changing its sound.This is the sound intensity especially.Also have in addition and do not affect additionally relevant optimal value, such as background noise or analog based on other of talker's sound.At this it should be noted that talker can certainly at least with small degree process ground unrest, such as mode is, talker by mouth closer to microphone or even hold hollow fist to shield neighbourhood noise.
Other optimal value of being derived by one or more elementary optimal value is like this referred to here as " secondary optimal value ".As below also by explanation, be speech quality values at this, such as signal to noise ratio (S/N ratio) or below also will explain secret value, its illustrate, speech how to be heard to secret, and perhaps how many degree can be heard together by other people in other words.
In the sense of the present invention, " voice-optimizing indicator " can be understood as a kind of indicating device, the display such as this reason arranged specially or a region on a display such as existed in general manner for the communication facilities in means of transport or multimedia equipment.A region such as can be utilized on one screen to form such voice-optimizing indicator, and described screen is for back seat occupant and to be fixed on front stall and to be generally used for viewing video and/or for visual telephone object.For driver, voice-optimizing indicator such as can the multifunction display in instrument panel area or in means of transport auxiliary fasia console indicate.
In order to perform the method, by communication facilities of the present invention, at least there is the first signal supervisory instrument and dispensing device, this first signal supervisory instrument is configured for acquisition first input signal, this the first input signal comprises the voice signal of talker, and this dispensing device is configured for sending based on the output signal of the first input signal to recipient.By the present invention, this communication facilities should have for the voice-optimizing indicator of talker and at least one optimal value determining device, and described optimal value determining device is configured for determining at least one optimal value for output signal about at least one Optimality Criteria and controlling the voice-optimizing indicator for talker according to optimal value.
By method of the present invention or communication facilities of the present invention, can show to talker (in other words user) in a straightforward manner, his voice signal is current is be applicable to how well make recipient correctly can understand speech.At this, voice-optimizing indicator is determined as follows: what kind of communication facilities is to the technology connection of recipient, and what kind of the current network service of such as mobile telephone network is.The advantage of this point is, talker can not be induced unnecessarily to improve volume, although this can not affect the voice quality locating arrival interlocutor.Replace, to " feedback " of talker only based on, how good output signal be before it is sent by communication facilities, that is with a kind of he perhaps by changing the form that the sound intensity, tone height etc. or other measure (shielding neighbourhood noise) still can change.As below also by explanation, especially also there is following possibility: indicate to talker, how strong the speech in around its next-door neighbour is felt as.By this side group for talker it is possible that the optimal value such as sound intensity is directly optimized or holds it in optimization range.
As explained, there are many possible optimal values above.
Particularly preferably at least one optimal value determined is speech quality values, and this speech quality values is the yardstick that how good output signal voice quality is.Such speech quality values also can be called one " clearness value ", and therefore it illustrates, how voice can clearly be understood, such as, when having powerful connections noise.Particularly preferably speech quality values represents signal to noise ratio (S/N ratio), the signal to noise ratio (S/N ratio) of such as, voice signal in the input signal received.
Signal to noise ratio (S/N ratio) can such as particularly preferably be determined based on first input signal (it comprises voice signal and noise) of output signal (or based on the first input signal through filtering, first it comprise the simple voice signal that will be transmitted preferably being removed background signal) and acquisition.This signal to noise ratio (S/N ratio) such as can represent with the form of nondimensional noise figure, and therefore it illustrates, output signal is separated so-called signal to noise ratio (S/N ratio) in other words how well with ground unrest be such.
As beginning is mentioned, for many users importantly, their speech is not understood by all occupants.Therefore alternatively or additionally, particularly preferably at least one optimal value can comprise " secret value ", and this secret value is voice signal can by the yardstick how to understand to degree in district with the first signal supervisory instrument listening separated by a distance.Term " separated by a distance " can be understood as, listening district not to be in the first signal supervisory instrument should detect in that region of speaker speech signal, but be positioned at listening district or listening district apart from farther of this side, region, other occupants of other staff's such as motor vehicle are in this and listen in district, and they should not understand speech.These other listen district hereinafter also referred to as " secret zones ".
Particularly preferably, in order to determine secret value (it also can be called one " private index "), the first input signal can preferably compare at the second input signal of the relevant sound listened in district to expression after the filtering.This second input signal can receive by one or more applicable sound detection unit, and described sound detection unit forms listening district or being in relevant secret zones of secret zones towards corresponding.
In this case output signal and the second input signal compared, preferably can perform correlation analysis.This correlation analysis illustrates, the output signal first comprising the voice signal that preferably should not be heard in secret zones is consistent with the input signal of the voice signal corresponded in associated secret district in which kind of degree.Orthogonal relevance function is preferably utilized in this correlation analysis.
If control the voice-optimizing indicator for talker by such secret value or by the indicated value based on this secret value, then talker can directly recognize, how strong the speech in around it is felt as.
Preferably also can ensure by communication facilities by user's initialization or automatically, in order to improve secret value, export in the region of secret zones and covering voice signal.The automatic control covering voice signal such as also can be carried out based on secret value.Ensure at this, cover voice signal only to listen in the region in district at other belonging to secret zones completely targetedly and send, and as background noise can not play interference effect in listen (namely in the place that voice signal is detected) in district of talker as far as possible.Particularly preferably cover voice signal at this to be produced adaptively, that is adapt to present case.Cover voice signal to export, communication facilities can preferably have covers audio signal controller, and it such as can be coupled with optimal value determining device, makes optimal value determining device can control to cover audio signal controller.
Covering voice signal to produce to provide in other words, having many possibilities.On the one hand, cover voice signal to produce specially based on noise signal, particularly white noise noise generator.The ground unrest existed can be detected in addition and such as again send when amplifying or revise.Ground unrest can be such as running noise.Particularly preferably cover voice signal to produce based on the signal of audio frequency apparatus such as radio or MP3 player etc.
The background signal particularly preferably such as existed, such as ground unrest, or the signal of particularly preferably audio frequency apparatus, as long as just modify in certain frequency range as covering voice signal, only targeted voice signal is covered and does not almost notice this hearer in second tin of district, background signal is by radical change.Only need background signal slightly to improve in this locality in frequency range for this reason, in these frequency ranges current goal voice signal in second tin of district higher than the level of background signal.
In addition, only when targeted voice signal meets or exceeds the minimum signal strength of definition completely, the output covering voice signal can just be carried out.
In a preferred embodiment of the present invention, also set by talker, which other listen district as secret zones.Such as can ensure the talker of means of transport back seat left rear side, the occupant being sitting in his side can hear speech together, because such as both make a phone call jointly, the such as driver of the personnel on the contrary in means of transport front area can not hear speech.
To point out clearly at this, first tin of district and other listen district in the sense of the present invention can unrestricted choice, that is completely likely, in a first scenario a Ge Ting district be the talker that just in time will carry out secret phone speech listen district, this listens district to form second tin of district in another case, because listen another personnel in district will carry out secret phone speech at another.
If have multiple separate listen district, preferably each listens district to arrange oneself a voice-optimizing indicator, and this voice-optimizing indicator is that listening during district of current speakers is activated particularly preferably in this.
In order to form voice-optimizing indicator, there is different possibility.Particularly preferably multiple different optimal value indicates on a common voice-optimizing indicator.Its advantage is, user only should be noted a voice-optimizing indicator.
This particularly preferably multiple different optimal value be combined into an indicated value, this indicated value indicates on common voice-optimizing indicator.This is particularly advantageous in following situation: different derivation or secondary optimal value (is such as secret value privacy value in other words on the one hand, be speech quality values or clearness value on the other hand, such as signal to noise ratio (S/N ratio)) to finally the same elementary optimal value being directly related to voice is relevant, elementary optimal value is such as the sound intensity of talker.If the impact of this elementary optimal value (such as the sound intensity) has adverse effect for each secondary optimal value, such as when talker talks more ringingly, signal noise ratio improve on the one hand, but therefore also reduce secret value, then advantageously, indicated value produces thus: indicated value indicates to talker, and what situation talker is about Different Optimization criterion.
The combination of numerical value also means in the sense that, and such as one the common elementary optimal value such as sound intensity is directly instructed to, preferably so instruction, makes the impact therefore simultaneously indicated together secondary optimal value.The combination of such as optimal value can preferably so be carried out, and makes to form different instruction levels.
For this reason in the particularly preferred scheme of one, multiple different optimal value and/or the indicated value combined by Different Optimization value are instructed in bar.So such as this bar can have with the different quality region of the form of the instruction level of different colours, reaching an instruction level tense marker or do not marking a quality region determined.Equally, a sub-combinations thereof value such as sound intensity value such as bar also can describe in the quality-class of setting.Particularly preferably such bar is so formed, bar end is made to be configured for the region of speech quality values, and another end is configured for the region of secret value, because along with the sound intensity improves, first speech quality values becomes and becomes better and better, and when the sound intensity also improves further, final secret value becomes worse and worse.
Accompanying drawing explanation
Below with reference to the accompanying drawings again the present invention is explained in detail by embodiment.Accompanying drawing is as follows:
Fig. 1 is the schematic diagram of the embodiment by communication facilities of the present invention with four Ge Ting districts;
Fig. 2 is the block scheme of the optimal value determining device of embodiment by Fig. 1;
Fig. 3 is the schematic diagram of the voice-optimizing indicator of embodiment by Fig. 1.
Embodiment
Set out respectively in fig 1 and 2 in a kind of exemplary scene: talker SP is in first tin of district HZ1 in means of transport back seat, and carry out telephone relation by hands-free device and outside interlocutor in confidence.Pilot set listen the driver in district HZ3 should can not understand this call completely at another.Clearly state at this, except this driver's scene, also can realize contrary situation by the equipment of the present invention's structure: such as driver should be communicated by its hands-free device, and the same children taken advantage of in back seat can not understand.That is, whole communication facilities is configured to, make to listen the people in district HZ1, HZ2, HZ3, HZ4 to talk at any one, and at this moment to show to corresponding talker by voice-optimizing indicator by mode of the present invention, perhaps how he can optimize his voice, therefore signal reaches interlocutor as far as possible well, but can not be understood well by co-driver.Be different from described by Fig. 1, be equipped with a voice-optimizing indicator 3 respectively also can to other occupant I, these voice-optimizing indicators can be controlled by a common control module 10 via interface 30.
As shown in Figure 1, this each tin of district HZ1, HZ2, HZ3, HZ4 be equipped with one oneself microphone MK1, MK2, MK3, MK4 and at least one oneself loudspeaker LS1, LS2, LS3, LS4.Such as loudspeaker LS1, LS2, LS3, LS4 can be the boombox in the headrest of the relevant position of means of transport, therefore realizes this locality and matches.The loudspeaker equally also can arranged with being distributed in means of transport by other listens district's sounding to what determine in a specific way, and its mode is, by the overlap be applicable to of the signal from different loudspeaker, produces the sound field of explication.Especially also can consider, realize listening district greater or less than four differences.
In order to avoid loudspeaker LS1, LS2, LS3, LS4 signal feedback to corresponding microphone MK1, MK2, MK3, MK4 of listening district HZ1, HZ2, HZ3, HZ4 to match, equipment has echo canceller.For this reason be applicable to method and equipment fully known to those skilled in the art, therefore this not further explain or describe.
Microphone MK1, MK2, MK3, MK4 are connected on the input interface 11,13,15,17 of control module 10.Same loudspeaker LS1, LS2, LS3, LS4 (or loudspeaker to) are connected on the output interface 12,14,16,18 of control device 10.This control device also has the bus interface 19 of leading to communication interface 2, this communication interface can be formed in a traditional way, and ensure that the output signal AS of in the future self-control device 10 is encoded into applicable signal and sends, make described suitable signal can at interlocutor place by corresponding interface with again decode.This communication interface 2 is also compatibly formed, to convert the telephone signal of the input of interlocutor to suitable output signal and to be such as transferred to again control device 10 via bus interface 19, so this control device sends corresponding signal, for controlling the loudspeaker LS1, LS2, LS3, the LS4 that listen in district HZ1, HZ2, HZ3, HZ4 current user via the output interface 12,14,16,18 be applicable to.
The important module of control device 10 is optimal value determining device 20 at this, its for current speech about predetermined Optimality Criteria with by mode determination optimal value of the present invention, and control the voice-optimizing indicator 3 of current speakers S at this interface 30 via control device 10 according to this optimal value.As already mentioned, describe a kind of example in FIG, talker S is in first tin of district HZ1, and listening in district HZ2, HZ3, HZ4 at other on the contrary has other occupants, and they preferably should be listened and not understand current speech.Therefore also only in first tin of district HZ1, describe a voice-optimizing indicator 3 simplifiedly in FIG, but the present invention is not restricted to this.
Fig. 2 is shown in more detail in optimal value determining device 20 inside for determining method or the parts of Different Optimization value SOV, SOD for this scene.Specifically, when this scene according to Fig. 2, determine two optimal values SOV, SOD, an i.e. speech quality values SOV (in other words illustrative value) and an identifying value SOD, speech quality values illustrates that how good output signal AS be in the voice quality in illustrative, and identifying value illustrates that signal is listened in district can also understand in which kind of degree at another.In particular situations, the district HZ3 that listens of such as driver can so monitor, and driver can understand voice signal SP in which kind of degree.Listen district HZ2, HZ4 of other occupants also can be verified by same mode constantly.
As follows at this for determining the mode of optimal value SOV, SOD:
Such as from the microphone MK1 at the talker S place in first tin of district HZ1, to come the first input signal ES1 via input interface 11, this first input signal preferably clearly comprises the voice signal SP of talker S relatively.This first input signal ES1 mono-gives filter 21 in aspect, removes and the incoherent all interference noises of voice in this filter by means of spectrum filter (preferably have high pass and low pass and perhaps also have other filtering stage).Determine useful signal or output signal AS in such a way.In order to regulate wave filter and determine neighbourhood noise, such as also can use the second input signal ES2, this second input signal obtains from listening the microphone MK3 district HZ3 via the input interface 15 of control device for this reason.Other signal same also can obtain with other microphone (such as listening microphone MK2, the MK4 in district HZ2, HZ4 at other) and same for determining ground unrest, so that Optimal Filter regulates.If one of other staff in means of transport are talkers, then this reverses certainly, so the filtering of input signal that the input signal obtained via interface 11 obtains for the microphone place being supported in corresponding talker.
So output signal AS is transferred to communication interface 2 (see Fig. 1) via bus interface 19.In addition, this output signal AS can utilize in speech quality determining unit 22, to determine that speech quality value SOV is as the first optimal value SOV.For this reason, the level (such as unit is dB (A)) of output signal AS is divided by by the level of the first input signal ES1 (such as unit is also dB (A)), obtains signal to noise ratio (S/N ratio) (also referred to as SNR value) thus.Nondimensional SNR value such as can be converted into the numerical value between 0 (can not understand) to 1 (clearly voice) or be converted into other yardstick.As described, so this signal or this numerical value may be used for controlling voice-optimizing indicator 3, as this also will make an explanation by Fig. 3 later.
In addition as shown in Figure 2, output signal AS can be transferred to secret value determining unit 23, and it determines that secret value SOD is as another optimal value SOD.First utilize the second input signal ES2, it is from the microphone MK3 listening district HZ3 for this reason, this listen district belong to secret zones (as explained above, this only exemplarily for driver listen district).This second input signal ES2 mainly comprises interior room noise, noise etc., but also comprises the voice signal SP through noise reduction.The level of the voice signal SP on this position this and current speakers S listen the microphone MK1 in district HZ1 and the distance between the microphone MK3 obtaining the second input signal ES2 relatively with the first input signal ES1 pro rata by noise reduction.Correlation analysis is performed between output signal AS and the second input signal ES2, such as form is that orthogonal correlativity compares, this correlation analysis explanation, in fact how many deals of output signal AS can also be identified, that is filtered first input signal ES1 how many deals of therefore most of voice signal SP in the second input signal ES2.Determine related coefficient at this, this related system such as also can be expressed as nondimensional numerical value, is preferably between 0 and 1, (0 represents completely different, and 1 represents identical).This related coefficient also can be transferred to voice-optimizing indicator 3 as optimal value SOD.
The preferred version of voice-optimizing indicator 3 is described in figure 3.Be the bar formed especially at this, as already explained, this bar or can describe on an independent display on a multifunction display or analog natively existed.This bar is divided into different quality region and indicates grade DS1, DS2, DS3, DS4, a DS5 in other words.At this, different instruction level DS1, the different color mark of DS2, DS3, DS4, DS5 represent in other words.
The different end regions of this bar in other words two halfbodies arranges to different optimal value SOV, SOD in this as viewing area, namely the viewing area DZV on the left of this arranges to speech quality values SOV (in other words SNR index), and the viewing area DZD on right side arranges to secret value SOD (in other words private index).Obviously, along with the increase of the sound intensity of voice signal SP, signal noise ratio improve.But related coefficient increases simultaneously, that is talk in confidence and do not reduced by the possibility that other occupants hear together.
The operation of voice-optimizing indicator 3 or bar can be carried out differently.Such as little by little can mark each instruction level DS1, DS2, DS3, DS4, DS5, what kind of this is according to current optimal value.Replace, respectively indicate level DS1, DS2, DS3, DS4, DS5 also can be labeled constantly and an indicator can indicate, which is current effective instruction level.Such as one striped transversely extended with bar or silk thread can change indicating on level DS1, DS2, DS3, DS4, DS5 from left to right along with the increase of the sound intensity on the direction of arrow LS shown in Fig. 3.
At this, the mark of instructions field DS1, DS2, DS3, DS4, DS5 being in other words described in instruction level DS1, DS2, DS3, DS4, DS5 of indicator (such as silk thread) can be undertaken by following rule:
Such as, if speech quality values SOV is lower than the first voice quality boundary value determined, then the first instruction level DS1 (voice quality for bad) can be reached.If speech quality values SOV is more than the first voice quality boundary value but still lower than (higher) the second voice quality boundary value, then reach the second instruction level DS2.
If such as determine that numerical value between 0 (bad quality) and 1 (good quality) is as speech quality values, can be 0.4 and the second voice quality boundary value can be 0.7 at this such as first voice quality boundary value.
If speech quality values SOV is higher than the second voice quality boundary value, then the instruction level DS3 on three right sides, one of DS4, DS5 are reached, and many to secret value SOD be relevant well.If this secret value is lower than the first secret boundary value, then reach middle instruction level DS3.If secret value SOD is higher than this first secret boundary value but lower than the second secret boundary value, then reach the 4th instruction level DS4, and higher than the instruction level DS5 reaching the last rightmost side during the second secret boundary value.As already mentioned, if secret value SOD is also calculated as the numerical value between 0 and 1, then 0 represents secret (voice signal listens district not understand at other) good especially, and 1 representation language signal listens district to understand well at other, the such as first secret boundary value is made to be 0.4 and the second secret boundary value can be 0.7.But all these numerical value are only preferred examples.
Because voice quality or the non-constant of private index in two outside instruction level DS1, DS5, these two instructions level DS1, DS5 are preferably labeled as redness, such as when the sound intensity makes relevant optimal value meet the above-mentioned rule indicating level DS1, DS5, instruction level DS1, DS5 glow.
Then instruction level DS2, DS4 is inside not only also receptible just in voice quality but also in private index, and therefore these two instructions level DS2, DS4 are preferably labeled as yellow.
The instruction level DS1 at center is the region of optimization and is labeled as green.
If such as bar is controlled to, instruction level DS1, DS2, DS3, DS4, DS5 of meeting above-mentioned condition are always luminous, then talker S only also should be noted that, green area at center is luminous, and talker knows, the sound intensity is desirable, makes at least before sending to recipient, to obtain enough good voice quality at transmitter side on the one hand, but voice are listened in district can not understand at other on the other hand.
As clearly visible in the aforementioned embodiment, the present invention advantageously allows, and so auxiliary telephoner, he is talked with the sound intensity of necessity, and this sound intensity is necessary under concrete noise situations, and communication system can process this sound intensity completely.In addition, talker can easily recognize, whether phone around it in can be heard together by others.Therefore, be certainly specially adapted to application in a motor vehicle by method of the present invention or by communication facilities of the present invention, multiple personnel are closely adjacent to be sitting in a closed space in a motor vehicle.Such as, but also can be used in other similar situation, rest room, fair, hall region, larger office room or other scene, here other people can hear together and occur many noises.
Indicate additionally by the present invention it is possible that to talker and arrive the voice quality of interlocutor, especially about the sound intensity and illustrative.Therefore can realize, show to talker, interlocutor can understand the speech of talker how well.If talker such as to sit in means of transport at the volley and interlocutor as the place of invariant position, can show to talker, he can be understood how well by ground one side.For this reason, the output signal be sent out towards ground one side by correspondingly analysis and inspection and/or can determine the actual voice quality sent in other words arrived there ground one side, and feedback is accordingly sent to means of transport.
By the corresponding instruction for talker, can advantageously realize in addition, talker unnecessarily need not improve its voice sound intensity, especially true when neighbourhood noise is strong, otherwise therefore talker has the danger of its speech privacy of infringement.In contrast to this, realized by the present invention, both made when the environment sound intensity is changeable, talker also talks, if it is enough good that talker obtains signal list plain language sound quality recipient one side with the voice sound intensity remained unchanged.Corresponding enough good voice quality such as can by means of (the active noise elimination of known active noise compensation technology itself, abbreviation ANC) realize, especially by the superposing of inversion signal of noise signals and corresponding generation, and offset sound accordingly for producing at outgoing side.
Finally again point out, the communication facilities be described in the drawings or the method for detailed description only relate to embodiment, and it can be revised in many aspects.Also will point out for during integrality in addition, the use of word " " is not got rid of, and correlated characteristic also can exist on many times of ground.Equally, term " unit " is not also got rid of, and this unit also can be made up of multiple subelement.
Claims (11)
1. for operational communications equipment (1), the method of the communication facilities (1) especially in means of transport, in the method, first signal supervisory instrument (MK1) obtains the first input signal (ES1), this first input signal comprises the voice signal (SP) of talker (S), output signal (AS) based on the first input signal sends to recipient by means of communication facilities (1), about at least one Optimality Criteria, at least one optimal value (SOV is determined for output signal (AS), SOD), and according to described optimal value (SOV, SOD) the voice-optimizing indicator (3) being used for talker (S) is controlled.
2. method according to claim 1, is characterized in that, at least one optimal value (SOV) comprises speech quality values (SOV), and this speech quality values is the yardstick that how good the voice quality of output signal (AS) is.
3. method according to claim 2, is characterized in that, speech quality values (SOV) represents signal to noise ratio (S/N ratio).
4. according to the method in any one of claims 1 to 3, it is characterized in that, at least one optimal value (SOD) comprises secret value (SOD), and this secret value is voice signal can by the yardstick how to understand to degree in district (HZ2, HZ3, HZ4) with the first signal supervisory instrument listening separated by a distance.
5. method according to claim 4, it is characterized in that, in order to determine secret value (SOD), output signal (AS) is comparing with the first signal supervisory instrument relevant second input signal (ES2) of the sound in district (HZ2, HZ3, HZ4) of listening separated by a distance to expression.
6. method according to claim 5, is characterized in that, compares, perform correlation analysis to output signal (AS) with the second input signal (ES2).
7. the method according to any one of claim 4 to 6, it is characterized in that, in order to improve secret value (SOD), cover voice signal (MS) listening in the region of district (HZ2, HZ3, HZ4) to send to the first signal supervisory instrument separated by a distance relevant.
8. the method according to any one of the claims, is characterized in that, by (3) instruction on a common voice-optimizing indicator of multiple Different Optimization value (SOV, SOD).
9. method according to claim 8, it is characterized in that, multiple Different Optimization value (SOV, SOD) is combined into an indicated value (DS1, DS2, DS3, DS4, DS5), and this indicated value is in the upper instruction of common voice-optimizing indicator (3).
10. the method according to any one of the claims, it is characterized in that, multiple Different Optimization value (SOV, SOD) and/or the indicated value (DS1, DS2, DS3, DS4, DS5) that combined by multiple Different Optimization value (SOV, SOD) are indicated in bar.
11. communication facilitiess (1), in particular for means of transport, this communication facilities at least comprises:
First signal supervisory instrument (MK1), this first signal supervisory instrument is configured for acquisition first input signal, and this first input signal comprises the voice signal (ES) of talker (S);
Dispensing device (2), this dispensing device is configured for sending based on the output signal (AS) of the first input signal (ES1) to recipient;
For the voice-optimizing indicator (3) of talker (S);
Optimal value determining device (20), described optimal value determining device is configured for determining at least one optimal value (SOV, SOD) for output signal (AS) about at least one Optimality Criteria and controlling to be used for the voice-optimizing indicator (3) of talker (S) according to optimal value.
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| CN105139860B (en) | 2020-12-01 |
| DE102014210760B4 (en) | 2023-03-09 |
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