WO2015176986A1 - Procédé d'exploitation d'un système de dialogue vocal pour véhicule automobile - Google Patents

Procédé d'exploitation d'un système de dialogue vocal pour véhicule automobile Download PDF

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Publication number
WO2015176986A1
WO2015176986A1 PCT/EP2015/060361 EP2015060361W WO2015176986A1 WO 2015176986 A1 WO2015176986 A1 WO 2015176986A1 EP 2015060361 W EP2015060361 W EP 2015060361W WO 2015176986 A1 WO2015176986 A1 WO 2015176986A1
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WO
WIPO (PCT)
Prior art keywords
user
input
asi
determined
acoustic signals
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PCT/EP2015/060361
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German (de)
English (en)
Inventor
Thomas Rosenstock
Alexander Stege
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2015176986A1 publication Critical patent/WO2015176986A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/20—Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
    • G10L2015/225—Feedback of the input speech

Definitions

  • the present invention relates to a method for Operator Op ben ⁇ a speech dialogue system for a motor vehicle, in which an input state of an input process is determined and is output in the condition information as a function of the input state determined.
  • Voice control system comprehensible pronunciation of Quillor ⁇ tes so that, for example, controls a crash and not done too late.
  • a cancellation of a voice dialogue leads not only to cancel the current input, especially for longer dialogues, but also, for example, to reject an already partially completed complex ⁇ xeren process.
  • the user must then repeat entries already carried out or at least only re-enter the current state of the current language dialogue, to continue your voice ⁇ dialogue at the appropriate place.
  • the user is, for example, due to a handenen before ⁇ disturbing influence by the speech dialogue system up ⁇ prompted to repeat his entry so that a performance ⁇ rich input can be made.
  • a procedural ren for operating a speech dialogue system for a motor ⁇ vehicle receiving acoustic signals, which are incorporated within the framework ⁇ men of an input process and include the voice ⁇ signals of a user in the motor vehicle. Furthermore, the method comprises determining an input status of the input process as a function of the received acoustic signals. In addition, the method includes from ⁇ give status information depending on the erstoff ⁇ th input state to inform the user of the determined input state.
  • Speech dialogue system for a motor vehicle which informs the user how a current input state of an input process.
  • the user is, for example, on notice that the entry process was successful ⁇ rich or whether for example an interference effect is present, the gege- the entry process for the speech dialogue system if necessary adversely affected.
  • the user is, for example, a multimedia unit in the motor vehicle informed whether interference influence to be ⁇ be raised to ermögli ⁇ chen a successful entry.
  • Such instructions are then preferably communicated acoustically and / or visually to the user by means of the multimedia unit.
  • the output of the state information is in this to ⁇ connection for example, after or during the input of the input process by the multimedia unit, which the user, for example, acoustically notifies "It's too noisy for speech recognition.” Or "Please spre ⁇ chen him prompting louder ".
  • the status information of ⁇ for example in a simple form of a text on a displa capable to or even in the form of colors, symbols or pictures.
  • Runaway ⁇ converted by means of the speech dialog system in the determination of the input state which is, for example, less computationally intensive than egg ⁇ ne full speech recognition.
  • Such audio analysis runs for example in the background and monitors an on ⁇ occurred or disappearance of interference. This can be done for example by means of a vasesserkenners which continues ⁇ continuously performs fault detection of the acoustic signals during the input process.
  • the speech dialogue system the entranc ⁇ be automatically paused as part of the entry process to ensure that the user is only required to speak on ⁇ if there are no disturbances or the probability of a speech recognition high enough is.
  • This status information to the user then communicated to the In ⁇ play analogous to the situation described above, except that this time the SDS system ⁇ play as "Please! Just a moment" asks the user for the words to be patient. If a proceeding of the entry process promising rich, the user is, for example, by means of a akusti ⁇ rule tone indicated that a resumption of dialogue is possible.
  • Ver ⁇ drive controlling the input process in response to the input state determined.
  • Controlling the input process is made possible by user interaction with the voice dialogue system and so leads inter alia to an improved Sensham ⁇ tion and recognition quality and, consequently, to a higher likelihood that the desired control operation is ⁇ passes.
  • determining the input state comprises performing a
  • determining the input state comprises determining a loudness strength and / or dynamics of the acoustic signals, in particular the voice signals of the user.
  • a volume and / or dynamics of ambient noise is determined, which optionally prevent a disturbing background successful speech recognition.
  • the volume and / or dynamics of the ambient noise for example, higher than a predetermined threshold value is notified to the user by means of the multimedia unit so that a risk of Starbucksken ⁇ voltage exists and the detection quality for a successful introduction of the desired control operation is deteriorated.
  • the user must be counteracted because of the dialogue with the speech dialogue system ⁇ able already during the input process, a failure of speech recognition and the introduction of ge ⁇ desired operating procedure.
  • the acceptance of the speech dialogue system is increased and the user's frustration is prevented or at least reduced, because the output of the status information and the dialogue of the speech dialogue system with the user significantly increase the probability of a successful input process.
  • the determination of the input state in the context of the method comprises determining a location of the acoustic signals.
  • determining the input state comprises determining a ⁇ To article of the user.
  • the outputting of status information comprises the reproduction of the recorded acoustic signals.
  • the user is capable of outputting the Crusinformatio ⁇ nen in the form of a playback of the recorded acoustic signals to the ground and the input state determined by the Sendia ⁇ logging system of Comprehend input process.
  • the user is, for example Dine on ⁇ tively clear which interference influence the voice input has influenced nega- tively, although he formulated his voice signals clear and understandable, and perhaps thought to have done everything right.
  • determining the input state includes performing a Stö ⁇ approximately detection, determining a disturbing influence in the context of fault detection of the entry process and filtering the received acoustic signals as a function of he ⁇ mediated disturbing influence.
  • a disturbance ⁇ flow is determined, which prevents a successful input process or this affects at least adversely.
  • the interference effect determined is then detected, for example, during the input process by the speech dialogue system and au tomatically ⁇ filtered out or cut away, so as to make the speech recognition of the speech signals of the user and successfully perform the desired control operation.
  • the risk of false identifications is reduced, thereby contributing to an increased probability of successful entry.
  • a disturbing influence for example, a background noise, which is present by a driving operation of the motor vehicle, or other speech signals of other persons in the
  • the method comprises determining a location of the determined interference influence.
  • the location of the disturbing influence determined is determined the user for example by means of the multimedia unit.
  • these are speech signals of one or more intervening persuasive those playing sitting at ⁇ on the rear seat of the motor vehicle, so that the user the state information is output to the interference influence determined was located in a rear region of the motor vehicle.
  • the user can be a bit quieter ask the person or persons to the recognition quality and the probability of successful entry of the entry process to raised stabili ⁇ hen.
  • a plurality of microphones or a microphone array are arranged in the motor vehicle to enable acoustic localization.
  • the method comprises identifying the user and / or the detected interference in dependence on the received acoustic signals. With regard to the detected interference, it is thus possible, for example, not further to the user
  • the user is, for example, audible and / or visual output state information "It WUR recognized the several people that influence the input ⁇ ".
  • audio signals of a radio in the motor vehicle are detected, which in the background music ⁇ again and thus is the source of the detected interference.
  • the user is, for example, it executed ⁇ reported that music was recognized that influenced the current default volume input process adversely.
  • the Audioana ⁇ analysis under the procedure comprises an analysis of the frequency spectrum to assign as the received acoustic signals distinct frequency ranges, and for example in a comparison with stored data and the user or other persons identify by means of the speech signals.
  • FIG. 1 shows a flowchart of a program for operating a voice dialogue system for a motor vehicle
  • FIG. 2 is another flowchart of a program for
  • FIG. 1 is a flow chart for a program for
  • the control unit ST ⁇ summarizes, for example, a data and program memory and a computing unit and is signally coupled to at least ei ⁇ nem acoustic sensor ASE and a multimedia unit MME, which are arranged in the motor vehicle car.
  • the control unit is adapted to receive acoustic signals ASI, which were recorded by means of the acoustic sensor ASE, and to determine an input state EAC function of the received acoustically ⁇ tables signals ASI and in the further course in dependence of the determined input ⁇ state EAC state information ZIN provide.
  • the state information ZIN are output acoustically and / or visually by means of the Multimediaein ⁇ integrated MME to inform a user Be ⁇ the speech dialogue system in the motor vehicle on the determined input state EAC.
  • the acoustic sensor ASE is for example a microphone which is arranged, for example, in the region of a steering wheel of the motor vehicle.
  • a plurality of microphones or a microphone array are arranged in the motor vehicle, wel ⁇ che signal technology coupled to the control unit ST.
  • the multimedia unit MME is configured to output the state information ⁇ ZIN acoustically and / or visually. It includes, for example, a speaker and a display as a graphical user interface.
  • the loudspeaker and the display need not necessarily form a common multimedia unit MME, but may also be arranged as separate units in the motor vehicle.
  • the loudspeakers are arranged as acoustic unit and the display unit as gra ⁇ fish separated from each other in the vehicle arrival, for example, instead of the multimedia unit MME which are signally connected to the control unit ST gekop ⁇ pelt.
  • the control unit ST includes, for example, a dialog control ⁇ DST, a recognizer control EST and a Fault- serkenner SE, the control under the program Eingabepro- a process to perform an audio analysis of the received acoustic signals ASI.
  • the fault detector SE leads to Example continuously during the input process by a disorder ⁇ recognition of the received acoustic signals ASI by and thus determines, for example, a disturbing influence SEF, which can adversely affect the input process.
  • the Dialogsteue- tion DST, the recognizer control EST and the disturbance identifier SE here may also be separate components of the speech dialogue system ⁇ .
  • a first step S1 the program is started and variables are initialized if necessary.
  • the start of the program for example, take place promptly to an engine start of the motor vehicle or be initiated by pressing a Tas ⁇ te by the user.
  • the control unit ST of the Di ⁇ alogêtung DST and the Erkenner horrung EST signals that an input process begins and an input phase takes place.
  • the user is pointed out in the vehicle that a voice recognition in the context of the input process now starts and the detection phase is grisge ⁇ give.
  • This information may be communicated to the user visually, either acoustically ⁇ table and / or, for example by means of the multimedia unit MME a sound and / or a light ⁇ signal is output in the form of a flashing light.
  • a step S5 under the entry process by means of the at least one acoustic sensor ASE added akusti ⁇ specific signals ASI and received by the control unit ST.
  • an input ⁇ EAC state is detected the input process by the control unit ST in depen ⁇ dependence of the received acoustic signals ASI.
  • the determined input state EGZ of the input process in this context includes information about a success of the input by the user.
  • a recognition quality which is represented for example by a numerical value. Is this numerical value, for example, less than a pre-admit ⁇ ner threshold, the input is considered unsuccessful, and it is initiated no operation. If the numerical value equal to or greater than the predetermined smoldering ⁇ real value that the user input is classified as successful and introduced the desired operating process.
  • a place LO_ASI or volume and / or dynamics LD_ASI the acoustic signals ASI is ermit ⁇ telt, for example, in the context of determining the input state EAC, which includes a volume and / or dynamics of voice signals of the user.
  • an interference influence SEF is also determined by means of the acoustic sensor ASE and the control unit ST, wel ⁇ cher adversely affect the input process. It is also possible to determine several interference effects SEF whose
  • the disturbance identifier SE of the control unit ST interrupts the input phase, or releases, if a disturbing influence has been determined or a disturbing influence was istschal ⁇ tet.
  • This control of the input process by the Dia ⁇ log control DST the control unit ST is also at this Po ⁇ tion of the program by a backward arrow indicated ⁇ indicates, which leads to the step S3 after completion of step S9.
  • a location LO_SEF of the determined disturbing influence is determined as a function of the determined input state EGZ and the determined disturbing influence SEF so that the user of the speech dialog system can concretely refer to the disturbing influence SEF in the further course and find the disturbing influence SEF to support ⁇ .
  • the output of the state information ZIN takes place in this connection, for example after or even during the input of the input process by means of the multimedia unit MME.
  • the step S9 when determining the Lautstär ⁇ ke and / or dynamics of the audio signals ASI LD_ASI from a low volume and / or dynamics of the speech signals of the user is determined it is, for example, by means of the
  • Multimedia unit MME acoustically prompted by the speech dialogue system "Please speak louder! In this way, the user is informed that he should adjust his volume ⁇ ke, so that a desired operation can be started.
  • the user is as follows, for example, about the following: "It is too noisy for speech recognition.” In this In connection with this, the user is consequently outputting the state information ZIN that the volume and / or dynamics surrounding noise and possible interference influences prevent or at least hinder a successful input process.
  • the user can simulate the received acoustic signal ASI of the last input by means of the multimedia unit MME during the input process, so that the user himself has the opportunity to recognize how and why the last input was impaired, for example the desired operation has not been performed.
  • the status information ZIN is also displayed visually, for example in the simple form of a text on the display of the multimedia unit MME or else in the form of colors, symbols or images. If user input has already been successful in the course of the program in step S7, this will be the user's zer displayed for example by a green screen of the display of the multimedia unit MME.
  • a step S13 the program and the input process are ended. This is done, for example, manually by the Be ⁇ user by pressing a button or automatically after successful completion of a desired operation or after completing a drive cycle.
  • Figure 2 shows a further embodiment of the Pro ⁇ program for operating the speech dialog system. A sequence of the described program in which no disturbance of the input ⁇ process is determined, then can be done for example as follows:
  • - Sl The user starts the speech dialogue system, for example by pressing a key.
  • the dialogue control DST signals to the recognizer ⁇ control EST that a detection phase should begin.
  • the recognizer control EST informs the fault detector SE about the request of the recognition phase.
  • the fault detector SE releases the detection phase, if no disturbances speak contrary or for example ⁇ no disturbing influence SEF was determined in the context of the acoustic signals ASI.
  • the dialogue control DST now starts the Erkennungspha ⁇ se, which includes the speech recognition.
  • the acoustic signals ASI including voice ⁇ signals of the user are recorded and analyzed.
  • the voice control ASR reports a recognition result.
  • the recognizer control EST informs the aimsser ⁇ kenner SE about the end of the detection phase and speech recognition.
  • the fault detector SE reports the trouble-free execution of the recognition to the control unit ST, which can also be called a dialog.
  • the dialog gives by means of an acoustic output unit AAE and / or by means of the multimedia unit MME acoustically feedback to the user on the erkann ⁇ te and successful input.
  • the dialog displays additional information in ei ⁇ ner visual output unit UAE and / or by the multimedia unit MME on a graphical user interface ⁇ .
  • a sequence of the described program, in which a fault is determined, for example, at the beginning of the input process, can take place for example as follows:
  • - Sl The user starts the speech dialogue system, for example by pressing a key.
  • the dialogue control DST signals to the recognizer ⁇ control EST that a detection phase should begin.
  • - S3 The Erkenner horrung EST informs the aimsser ⁇ Kenner SE about the request of the detection phase.
  • - S4 The fault detector SE determines, for example, a
  • Disturbing effect SEF in the context of the acoustic signals ASIund reports this to the dialogue control DST.
  • the Di ⁇ alog horrung DST acoustically and / or visually with ⁇ means of the acoustic output unit AAE and / or the visual output unit UAE and / or the multimedia ⁇ unit MME feedback to the user, for example on the determined interference SEF.
  • the Eingabepro- process and the recognition phase will be altered in this together ⁇ menhang by means of the dialogue control DST, by for example, delaying the speech recognition or suppressed.
  • the input process is entspre ⁇ accordingly conducted to the first example of a trouble-free running of the program.
  • a sequence of the described program, in which a disturbance is determined, for example, during the input process, can take place for example as follows:
  • - Sl The user starts the speech dialogue system, for example by pressing a key.
  • the dialogue control DST signals to the Erkenner ⁇ control EST that a detection phase begins.
  • the recognizer control EST informs the fault detector SE about the request of the recognition phase.
  • the fault recognizer SE releases the detection phase, since no disturbances speak contrary and, for example, no disturbance SEF was determined in the context of the acoustic signal ASI.
  • the dialogue control DST now starts the Erkennungspha ⁇ se, which includes the speech recognition.
  • the acoustic signals ASI including voice ⁇ signals of the user are recorded and analyzed.
  • the Stö ⁇ rungserkenner SE continuously monitors the appearance and disappearance of Ver ⁇ disorders and determined so as a disturbing influence SEF as part of the acoustic Sig ⁇ tional ASI.
  • the fault detector SE reports this to the dialogue control DST.
  • the dialogue control DST are acoustically and / or visually by means of the acoustic output unit AAE and / or the visual Ausgabeein ⁇ integrated UAE, and / or the multimedia unit MME rubmel ⁇ dung to the user for example via the determined interference influence SEF.
  • the input process and the Erken ⁇ opening phase in this connection by means of the Dialog control DST modified, for example, by the speech recognition is delayed or prevented.
  • the input process is used for In ⁇ play at the interrupted position of the program fortge ⁇ sets and performed according to the first example of a disturbance ⁇ free running of the program ,
  • ⁇ menhang ei ⁇ ner address by the user input process was, for example, on an acoustic input underbro ⁇ chen, is so divided on resumption of the entry process the Be ⁇ user via the multimedia unit MME example, ⁇ "Please repeat the number ".
  • the flow of the program described forms an execution ⁇ example of a method of operating a speech dialogue ⁇ system for a motor vehicle, which also informs the user in ⁇ as a current input state EAC is an input ⁇ process.
  • EAC is an input ⁇ process.

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Navigation (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

L'invention concerne un procédé d'exploitation d'un système de dialogue vocal destiné à un véhicule automobile, comprenant les étapes consistant à : recevoir des signaux acoustiques (ASI) enregistrés dans le cadre d'un processus d'introduction et comprenant les signaux vocaux d'un utilisateur présent dans le véhicule; déterminer un état d'introduction (EGZ) du processus d'introduction en fonction des signaux acoustiques (ASI) reçus; sortir des informations d'état (ZIN) en fonction de l'état d'introduction (EGZ) déterminé afin d'informer l'utilisateur dudit état d'introduction (EGZ) déterminé.
PCT/EP2015/060361 2014-05-20 2015-05-11 Procédé d'exploitation d'un système de dialogue vocal pour véhicule automobile WO2015176986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014209499.2A DE102014209499A1 (de) 2014-05-20 2014-05-20 Verfahren zum Betreiben eines Sprachdialogsystems für ein Kraftfahrzeug
DE102014209499.2 2014-05-20

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WO (1) WO2015176986A1 (fr)

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CN110047501A (zh) * 2019-04-04 2019-07-23 南京邮电大学 基于beta-VAE的多对多语音转换方法

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CN110047501A (zh) * 2019-04-04 2019-07-23 南京邮电大学 基于beta-VAE的多对多语音转换方法

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