CN1897054A - Device and method for transmitting alarm according various acoustic signals - Google Patents

Device and method for transmitting alarm according various acoustic signals Download PDF

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Publication number
CN1897054A
CN1897054A CNA2005100846779A CN200510084677A CN1897054A CN 1897054 A CN1897054 A CN 1897054A CN A2005100846779 A CNA2005100846779 A CN A2005100846779A CN 200510084677 A CN200510084677 A CN 200510084677A CN 1897054 A CN1897054 A CN 1897054A
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China
Prior art keywords
sound
ambient
caution
ambient sound
speaker
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Pending
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CNA2005100846779A
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Chinese (zh)
Inventor
邱毓翰
吴建明
水岛考一郎
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to CNA2005100846779A priority Critical patent/CN1897054A/en
Priority to PCT/JP2006/314321 priority patent/WO2007007916A1/en
Publication of CN1897054A publication Critical patent/CN1897054A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17823—Reference signals, e.g. ambient acoustic environment
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G10K11/17837—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by retaining part of the ambient acoustic environment, e.g. speech or alarm signals that the user needs to hear
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3027—Feedforward
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A transmission device being able to launch alarm according to sound type is prepared as picking up ambient sound character and comparing it with various types of sound characters in databank then judging whether ambient sound belongs to sound type in databank or not by sound identifier, outputting alarm sound by emergency indicator if ambient sound belongs to sound type in databank and using sound mixer to output said alarm sound or to synthesize said alarm sound with sound played by sound playing unit then to output it.

Description

The transmitting device of alarm according various acoustic signals and method
Technical field
The present invention relates to a kind of sound transmission device and method, be meant a kind of transmitting device and method of alarm according various acoustic signals especially.
Background technology
The portable voice playing device as discman, mp3 walkman, is extensively used by masses in society now.And the user cooperates earphone (earphone) or headphone (headset) to listen to the music of walkman.
Have on the user of earphone, normal stroll is in the street on one side listened on one side by the music that plays out in the earphone, but these users often only are absorbed in and listen to music and ignored extraneous warning sound (as: honk), or the volume of sounding because of earphone is excessive, and can't hear extraneous warning sound.But if the user in time then may not have an accident in response to the warning sound in the external world.
Consult Fig. 4, in order to solve the above problems, U.S. Patent No. US6782106B1 has disclosed a kind of sound transmission device 14, this sound transmission device 14 is electrically connected with a sound play device (not shown) and an earphone/headphone, and comprises microphone 20, volume filtrator 22 and mixer 28.
This microphone 20 can receive the ambient sound around the user and export it to this volume filtrator 22.
And this volume filtrator 22 is electrically connected with this sound play device and this mixer 28, and receive the ambient sound of this sound play device and 20 outputs of this microphone simultaneously, and when the volume of the ambient sound of this sound play device and this microphone 20 outputs during greater than a particular value, this volume filtrator 22 can export this ambient sound to this mixer 28.And the size of this particular value can be set up on their own by the user.
This mixer 28 will be reached the sound that is transmitted by this volume filtrator 22 and be synthesized by the sound that this sound play device transmits, and the voice output after will synthesizing is play this synthetic video to remind the user to this earphone by this earphone.
And this known device 14 to be volumes of the warning sound of supposition in the environment be bound to greater than this particular value.But many volumes are often arranged greater than this particular value but the sound that does not have dangerous meaning in the environment, as: broadcasting sound or the musical sound play in the department store.Known sound transmission device 14 can be considered as these sound to warn sound and constantly remind the user, and this will cause puzzlement very big in the use.In addition, it often is not very loud that many its volumes of sound with warning meaning are arranged in the environment, as: bicycle the tinkle of bells, and on the contrary that these volumes are the less warning sound filtering of known volume filtrator 22, and lost the purpose of warning the user.So solve one of method of known problem, promptly be to judge in view of the above with the true meaning of ambient sound representative whether this ambient sound has danger, and be not to judge with the volume of ambient sound.
Summary of the invention
Therefore, the transmitting device that the purpose of this invention is to provide a kind of alarm according various acoustic signals, this transmitting device can be distinguished the ambient sound with dangerous meaning, and in time sends alarm and give the user who just listens to the sound of sound play device broadcast with earphone.
And another object of the present invention provides a kind of transmission method of alarm according various acoustic signals, and this method can correctly be judged the kind of ambient sound, and when this ambient sound belongs to danger sound really, just gives the alarm and notify the user.
So, the transmitting device of alarm according various acoustic signals of the present invention is applicable to that prompting listens to the user of sound with earphone, and the sound that this earphone is sent is produced by sound play device, and the transmitting device of this alarm according various acoustic signals comprises sound receiver, database, speaker-dependent, urgent prompting device and mixer.
This sound receiver can receive the ambient sound around the user and export it to this speaker-dependent.And the feature of the multiple sound that should note of this database storage.And this speaker-dependent can receive the ambient sound of this sound receiver output, and can extract the feature of this ambient sound, and contrast the feature of this ambient sound and the feature of all kinds of sound in this database, whether belong to the sound class in this database to judge this ambient sound.
This urgent prompting device comprises noise processed unit, caution unit and selected cell.This selected cell is electrically connected with this speaker-dependent, this caution unit and this noise processed unit, and receive ambient sound that transmits by this speaker-dependent and the result who determines, and when this speaker-dependent is differentiated this ambient sound and is not belonged to sound class in this database, this selected cell is then delivered to this ambient sound this noise processed unit, and this mixer is then delivered to this ambient sound and anti-phase sound wave thereof in this noise processed unit.
And when this speaker-dependent is differentiated this ambient sound and is belonged to sound class in this database, this selected cell is then selected and will be exported this caution sound by this noise processed unit or this caution unit, if this selected cell is selected this noise processed unit, then this noise processed unit this ambient sound of being about to adjust after the volume is warned sound as this, and export this mixer to, if and this selected cell is selected this caution unit, then should promptly select caution sound corresponding and that make in advance in the caution unit, and should warn voice output to this mixer according to the judged result of this speaker-dependent.
This mixer can receive the sound of this sound play device and the caution sound of this urgent prompting device output, and can select not export the sound of this sound play device and change, or select warn sound that sound and this sound play device play and synthesize afterwards and export this caution voice output.
And the transmission method of alarm according various acoustic signals of the present invention comprises the following step:
(A) reception environment sound;
(B) extract the feature of this ambient sound;
(C) feature of this ambient sound and the feature of the multiple sound that should note are compared, whether belong to the sound class that to note to judge this ambient sound; And
(D) when this ambient sound belongs to the sound class that should note, the sound that stops the output sound playing device is warned sound to this earphone or headphone and change output into, or will warn the sound synthetic back output of sound and this sound play device.
Description of drawings
Fig. 1 is the block scheme according to the transmitting device of alarm according various acoustic signals of the present invention;
Fig. 2 is the anti-phase sound wave of explanation ambient sound, this ambient sound and the audiogram of sum total sound wave; And
Fig. 3 is the process flow diagram of the transmission method of alarm according various acoustic signals of the present invention; And
Fig. 4 is the block scheme of known sound transmission device.
Embodiment
About the present invention is aforementioned and other technology contents, characteristics and effect, in the following detailed description that cooperates with reference to graphic preferred embodiment, can clearly present.
Consult Fig. 1, the preferred embodiment of the transmitting device 3 of alarm according various acoustic signals of the present invention is applicable to that ambient sound that prompting should note gives the user who receives the sound that sound play devices 7 play with earphone 9, and this transmitting device 3 comprises sound receiver 31, speaker-dependent 32, database 33, urgent prompting device 34, Preferences device 35, mixer 36 and error detector 37.
This sound receiver 31 can receive the ambient sound around the user and export it to this speaker-dependent 32, and this sound receiver 31 can be a kind of microphone, but the invention is not restricted to this, but also can adopt other receiver.
This database 33 stores the feature of the sound of multiple tool emergency risks meaning, for example the feature of siren class sound, brake class sound, loudspeaker class sound etc.And in the present embodiment, the feature of each sound is meant with Mel cepstrum parameter (Mel-scale Frequency Cepstral Coefficients, be called for short MFCC) proper vector that analyzes of method, but be not limited to this, also can be used as this audio signal characteristics with the zero crossing number of times (Zero Crossing Rate is called for short ZCR) or the acoustic energy of this voice signal.
" the Fundamentals of Speech Recognition " that this Mel cepstrum parametric method can be published in Prentice Hall in 1993 with reference to L.Rabiner and B.-H.Juang, this method mainly is to utilize Fu Li leaf conversion (Fourier Transform) that this voice signal is changed into frequency domain (Frequency Domain) signal by time domain (Time Domain) signal, and this frequency-region signal represents that this voice signal is at energy that each frequency had.Then again by the many groups of V-belt bandpass filters (Triangular Band-pass Filters) of containing the different frequency scope, take out the energy value of corresponding frequency range respectively, and wherein one group of V-belt bandpass filter is contained the audio frequency range that the human auditory can respond to, and by each V-belt bandpass filter this energy value is multiplied by different weights (weighting) and obtains an eigenwert of representing this frequency range, therefore can obtain being equivalent to a plurality of eigenwerts of V-belt bandpass filter number, and with these a plurality of eigenwerts as the one group of proper vector that can represent this sound.
This speaker-dependent 32 is electrically connected with this database 33 and this urgent prompting device 34, and receive the ambient sound of these sound receiver 31 outputs, this speaker-dependent 32 can extract the proper vector of this ambient sound, and contrast the proper vector of all kinds of sound in this proper vector and this database 33, to judge whether this ambient sound belongs to the sound class in this database 33, and after judgement finishes, export this ambient sound and judged result to this urgent prompting device 34.
And in the present embodiment, the comparative approach of the proper vector that this speaker-dependent 32 is relatively stored in this ambient sound and this database 33 is a horse Harrar Nuo Bisi Furthest Neighbor (MahalanobisDistance), and this method is disclosed in that S.-T.Bow shows and in " the Pattern Recognition " that published by Jwang Yuan in 1984.And this method mainly is the Euclidean distance of calculating between the proper vector of all kinds of sound of being stored in the proper vector of this ambient sound and the database 33 (EuclidianDistance).And in the process of computed range, horse Harrar Nuo Bisi Furthest Neighbor is also done calculating to the variation value (Variance) of proper vector.And worked as this Euclidean distance enough hour, represent that this environmental sound signal meets the wherein sound of a class of this database 33.
But the proper vector that also available other method of this speaker-dependent 32 comes comparison ambient sound and this database 33 to be stored, as: L.Rabiner and B.-H.Juang show and were judged by the concealed mark husband model (Hidden Markov Models) described in " the Fundamentals of Speech Recognition " of Prentice Hall publication in 1993, but the present invention is not limited to this.
This urgent prompting device 34 comprises selected cell 341, caution unit 342 and noise processed unit 343.This selected cell 341 is electrically connected with this speaker-dependent 32, this caution unit 342, this noise processed unit 343 and this Preferences device 35, and receive the result that this ambient sound and this speaker-dependent 32 are judged, and when this speaker-dependent 32 was judged this ambient sound and do not belonged to the sound of the class of risk, this selected cell 341 was about to this ambient sound and delivers to this noise processed unit 343.
And when this speaker-dependent 32 was judged this ambient sound and belonged to the sound of dangerous class, this selected cell 341 can be selected the result that this speaker-dependent 32 is judged is delivered to this caution unit 342, to order this caution unit 342 actions; Or this selected cell 341 can select this ambient sound is delivered to this noise processed unit 343, to order this noise processed unit 343 actions.
This caution unit 342 is electrically connected with this selected cell 341 and this mixer 36, and exportable caution sound, and should warn sound can be according to user's Preferences, as: when ambient sound is brake sound, the available voice that prestored: " automobile is carefully arranged " is used as this caution sound, or when ambient sound is the sound of siren class, can warn sound as this with a continuous rapid bleep that prestores.And this caution unit 342 is when receiving that this selected cell 341 requires the order of its action, be about to the corresponding caution voice output of this ambient sound to this mixer 36.
This noise processed unit 343 is electrically connected with this selected cell 341 and this mixer 36, and can receive the ambient sound of these selected cell 341 outputs.And when this ambient sound does not belong to the sound class of this database 33, export this ambient sound sound wave anti-phase with it to this mixer 36, and the mode that produces anti-phase sound wave is after a while with explanation in detail again.And belong to the sound class of this database 33 at this ambient sound, and when receiving the order of this selected cell 341, the ambient sound of adjusting after the volume is warned sound as this, and should warn voice output to this mixer 36.
This mixer 36 is electrically connected with this sound play device 7 and this earphone 9, and when receiving the caution sound that transmits in this caution unit 342 or this noise processed unit 343, can suspend and receive the sound that this sound play device 7 is play, and change this caution voice output to this earphone 9, to remind user's dangerous situation on every side, in addition, this mixer 36 also can be synthetic earlier with sound and this caution sound of these sound play device 7 outputs, export this earphone 9 again to, according to user's Preferences.
This Preferences device 35 is electrically connected with this selected cell 341 and this mixer 36, and can will adopt the sound that will warn sound and sound play device 7 outputs synthetic earlier to control this mixer 36, again Shu Chu mode according to user's setting; Or suspend the sound that this sound play device 7 of reception is play, and change the mode of this caution voice output to this earphone 9.In addition, this Preferences device 35 also can to control this selected cell 341 when this ambient sound is danger sound, be selected by this caution unit 342 or this noise processed unit 343 these caution sound of output according to user's setting.
When this ambient sound does not belong to the sound class of this database 33,, must eliminate of the interference of this ambient sound to the sound of these sound play device 7 outputs in order to allow the user still can normally listen to the sound of these sound play device 7 outputs.In a preferred embodiment of the invention, this noise processed unit 343 adopts automatic noise removing (Automatic Noise Cancel is called for short ANC) technology to eliminate the ambient sound of the sound class that does not belong to this database 33, but the invention is not restricted to this.Consult Fig. 2, this ANC method is the anti-phase sound wave that produces this ambient sound, makes the sum total sound wave after the sound wave addition anti-phase with it of this ambient sound level off to 0.
Return and consult Fig. 1, this error detector 37 is the microphones that are placed in these earphone 9 peripheries.And when the process of this sound play device 7 start warming-ups, or these sound play device 7 conversions play music track the time, this sound play device 7 does not have voice output.At this moment, this error detector 37 can receive the sum total sound wave of this ambient sound sound wave anti-phase with it, and will sum up sound wave and export this noise processed unit 343 to.
When this anti-phase sound wave and this ambient sound can't offset fully, this noise processed unit 343 can be revised the anti-phase sound wave of this ambient sound with the sum total sound wave that is not 0, to reach the purpose of eliminating ambient sound fully.
Cooperate and consult Fig. 3, the transmission method of alarm according various acoustic signals of the present invention comprises the following step:
Step 401, these sound receptacle 31 reception environment sound.
Step 402, this speaker-dependent 32 extracts the feature of this ambient sound.
Step 403, this speaker-dependent 32 be the feature of this ambient sound and all kinds of sound characteristics in this database 33 relatively, to differentiate classification under this ambient sound.If when this ambient sound does not belong to sound class in this database 33, then jump to step 410, represent that this sound does not have urgent meaning.If when this ambient sound belongs to sound class in this database 33, then jump to step 404.
Step 404 is that the setting value by this Preferences device 35 determines whether this selected cell 341 will select this caution unit 342, warns sound to use the sound of making in advance as this.If then jump to step 405.If not, then jump to step 406, to select this Unit 343, noise processed unit.
Step 405, this caution unit 342 send in advance the voice output made to this mixer 36 as this caution sound, follow execution in step 407.
Step 406 stops to produce the anti-phase sound wave of this ambient sound by these Unit 343, noise processed unit, and this ambient sound is exported in this mixer 36 as this caution sound, then execution in step 407.
Step 407 is whether the setting value by this Preferences device 35 determines this mixer 36 will suspend to receive the sound that this sound play device 7 broadcasts.If then jump to step 409.If not, then jump to step 408.
Step 408, this mixer 36 will be warned the sound synthetic back output of sound and this sound play device 7, and skip to step 401.
Step 409, this mixer 36 suspends the sound that receives this sound play device 7, should warn voice output individually, and skip to step 401.
Step 410, this noise processed unit 343 produces the anti-phase sound wave of this ambient sound, in order to offset this ambient sound, follows execution in step 411.
Step 411, this mixer 36 receives the anti-phase sound wave of this ambient sound, and the anti-phase sound wave of this ambient sound and the synthetic back of sound of this sound play device 7 are exported, and skips to step 401.
Comprehensively above-mentioned, the present invention utilizes this speaker-dependent 32 to judge whether this ambient sound meets the sound class in this database 33.And when this ambient sound does not belong to the sound class of this database 33, then eliminate this ambient sound with the anti-phase sound wave of this ambient sound, make the user merely only hear the sound that this sound play device 7 produces; And when this ambient sound belongs to the sound class of this database 33, then warn sound as this with sound or this ambient sound of user ' s preference, and suspend to receive the sound of this sound play device 7 and play this caution sound, or the sound that will warn sound and this sound play device 7 plays back to notify the user to note after synthesizing.Therefore can positively distinguish the sound that needs the user to be noted in the environment, reach purpose of the present invention.
Discussed above only is the preferred embodiments of the present invention, and can not limit scope of the invention process with this, the simple equivalent that those skilled in the art do content of the present invention under the situation of the spirit and scope that do not break away from claims and limited changes and modifies, and all belongs to the scope that the present invention is contained.

Claims (29)

1. the transmitting device of an alarm according various acoustic signals be applicable to remind with earphone or headphone to receive the ambient sound that the user of the sound of sound play device broadcast should note, and this transmitting device comprises:
Sound receiver receives user's ambient sound on every side;
Database stores the multiple feature that should note sound;
Speaker-dependent, receive the ambient sound of this sound receiver output and extract the feature of this ambient sound, and relatively whether the feature of all kinds of sound in the feature of this ambient sound and this database belongs to the sound class in this database to judge this ambient sound, and the result of output judgement;
Urgent prompting device is electrically connected with this speaker-dependent, and when this speaker-dependent judges that this ambient sound belongs to sound class in this database, exports and warn sound; And
Mixer, be electrically connected with this urgent prompting device, can receive the sound of this sound play device and the caution sound of this urgent prompting device output, and when this speaker-dependent is judged this ambient sound and is belonged to sound class in this database, stop to export the sound of this sound play device and change, or will warn the sound synthetic back output that sound and this sound play device are play this caution voice output.
2. the transmitting device of alarm according various acoustic signals according to claim 1, also comprise the Preferences device, this Preferences device can be set this mixer, so that the sound that this mixer is selected to suspend this sound play device of output is exported this caution sound to change into, or select to warn the sound synthetic back output of sound and this sound play device.
3. the transmitting device of alarm according various acoustic signals according to claim 1, wherein, this urgent prompting device comprises the caution unit, this caution unit can receive the judged result of this speaker-dependent output, and select caution sound corresponding and that make in advance, and should warn voice output to this mixer according to this judged result.
4. the transmitting device of alarm according various acoustic signals according to claim 1, wherein, this urgent prompting device comprises the noise processed unit, and when this ambient sound does not belong to sound class in this database, this noise processed unit then receives the ambient sound of this speaker-dependent output, and this ambient sound and anti-phase sound wave thereof are delivered to this mixer; And when this ambient sound belonged to sound class in this database, this ambient sound after the volume can will be adjusted as this caution sound head in this noise processed unit.
5. the transmitting device of alarm according various acoustic signals according to claim 4, also comprise error detector, when this error detector does not have voice output at this sound play device, can receive the sum total sound wave of this ambient sound and this anti-phase sound wave, and should sum up sound wave and export this noise processed unit to for this noise processed unit correction.
6. the transmitting device of alarm according various acoustic signals according to claim 1, wherein, this urgent prompting device comprises the noise processed unit, caution unit and selected cell, this selected cell and this speaker-dependent, this caution unit and this noise processed unit are electrically connected, and receive ambient sound that transmits by this speaker-dependent and the result who determines, and when this speaker-dependent judges that this ambient sound does not belong to sound class in this database, this selected cell is then delivered to this ambient sound this noise processed unit, this mixer is then delivered to this ambient sound and anti-phase sound wave thereof in this noise processed unit, and when this speaker-dependent judges that this ambient sound belongs to sound class in this database, this selected cell is then selected and will be exported this caution sound by this noise processed unit or this caution unit, if this selected cell is selected this noise processed unit, then this noise processed unit this ambient sound of being about to adjust after the volume is warned sound as this, and export this mixer to, if and this selected cell is selected this caution unit, then should promptly select caution sound corresponding and that make in advance in the caution unit, and should warn voice output to this mixer according to the judged result of this speaker-dependent.
7. the transmitting device of alarm according various acoustic signals according to claim 6, also comprise the Preferences device, this Preferences device can be set this mixer, export this caution sound so that this mixer suspends the sound of this sound play device of output to change into, or select to warn the sound synthetic back output of sound and this sound play device; And this Preferences device also can be set this selected cell and selects this caution unit or this noise processed unit to export this caution sound.
8. the transmitting device of alarm according various acoustic signals according to claim 6, also comprise error detector, when this error detector does not have voice output at this sound play device, can receive the sum total sound wave of this ambient sound and this anti-phase sound wave, and should sum up sound wave and export this noise processed unit to for this noise processed unit correction.
9. the transmitting device of alarm according various acoustic signals according to claim 1, wherein, this speaker-dependent is to represent this audio signal characteristics with this audio signal characteristics vector that Mel cepstrum parametric method is analyzed.
10. the transmitting device of alarm according various acoustic signals according to claim 1, wherein, this speaker-dependent is that zero crossing number of times or the acoustic energy of calculating this voice signal are used as this audio signal characteristics.
11. according to the transmitting device of claim 9 or 10 described alarm according various acoustic signals, wherein, this speaker-dependent relatively in the feature of this ambient sound and this database comparative approach of the feature of all kinds of sound be horse Harrar Nuo Bisi Furthest Neighbor.
12. the sound playing system of an alarm according various acoustic signals is applicable to remind with earphone or headphone to receive the ambient sound that the user of the sound of this system plays should note, this sound playing system comprises:
Sound play device is used for output sound;
Sound receiver is used to receive user's ambient sound on every side;
Database is used to store the multiple feature that should note sound;
Speaker-dependent, receive the ambient sound of this sound receiver output and extract the feature of this ambient sound, and relatively whether the feature of all kinds of sound in the feature of this ambient sound and this database belongs to the sound class in this database to judge this ambient sound, and the result that will judge output;
Urgent prompting device is electrically connected with this speaker-dependent, and when this speaker-dependent judges that this ambient sound belongs to sound class in this database, exports and warn sound; And
Mixer, be electrically connected with this urgent prompting device, can receive the sound of this sound play device and the caution sound of this urgent prompting device output, and when this speaker-dependent is judged this ambient sound and is belonged to sound class in this database, stop to export the sound of this sound play device and change, or will warn the sound synthetic back output that sound and this sound play device are play this caution voice output.
13. the sound playing system of alarm according various acoustic signals according to claim 12, also comprise the Preferences device, this Preferences device can be set this mixer, so that the sound that this mixer selects to suspend this sound play device of output to be changing this caution voice output, or the sound of selecting warn sound and this sound play device is exported after synthesizing.
14. the sound playing system of alarm according various acoustic signals according to claim 12, wherein, this urgent prompting device comprises the caution unit, this caution unit can receive the judged result of this speaker-dependent output, and select caution sound corresponding and that make in advance, and should warn voice output to this mixer according to this judged result.
15. the sound playing system of alarm according various acoustic signals according to claim 12, wherein, this urgent prompting device comprises the noise processed unit, and when this ambient sound does not belong to sound class in this database, this noise processed unit then will receive the ambient sound of this speaker-dependent output, and this ambient sound and anti-phase sound wave thereof are delivered to this mixer; And when this ambient sound belonged to sound class in this database, sound can be warned as this with this ambient sound of adjusting after the volume in this noise processed unit.
16. the sound playing system of alarm according various acoustic signals according to claim 15, also comprise error detector, when this error detector does not have voice output at this sound play device, can receive the sum total sound wave of this ambient sound and this anti-phase sound wave, and should sum up sound wave and export this noise processed unit to and export for this noise processed unit correction.
17. the sound playing system of alarm according various acoustic signals according to claim 12, wherein, this urgent prompting device comprises the noise processed unit, caution unit and selected cell, this selected cell and this speaker-dependent, this caution unit and this noise processed unit are electrically connected, and receive ambient sound that transmits by this speaker-dependent and the result who determines, and when this speaker-dependent is differentiated this ambient sound and is not belonged to sound class in this database, this selected cell is then delivered to this ambient sound this noise processed unit, this mixer is then delivered to this ambient sound and anti-phase sound wave thereof in this noise processed unit, and when this speaker-dependent is differentiated this ambient sound and is belonged to sound class in this database, this selected cell is then selected and will be exported this caution sound by this noise processed unit or this caution unit, if this selected cell is selected this noise processed unit, then this noise processed unit this ambient sound of being about to adjust after the volume is warned sound as this, and export this mixer to, if and this selected cell is selected this caution unit, then should promptly select caution sound corresponding and that make in advance in the caution unit, and should warn voice output to this mixer according to the judged result of this speaker-dependent.
18. the sound playing system of alarm according various acoustic signals according to claim 17, also comprise the Preferences device, this Preferences device can be set this mixer, so that the sound that this mixer suspends this sound play device of output to be changing this caution voice output, or the sound of selecting warn sound and this sound play device is exported after synthesizing; And this Preferences device also can be set this selected cell and selects this caution unit or this noise processed unit to export this caution sound.
19. the sound playing system of alarm according various acoustic signals according to claim 17, also comprise error detector, when this error detector does not have voice output at this sound play device, can receive the sum total sound wave of this ambient sound and this anti-phase sound wave, and should sum up sound wave and export this noise processed unit to for this noise processed unit correction.
20. the sound playing system of alarm according various acoustic signals according to claim 12, wherein, this speaker-dependent is to represent this audio signal characteristics with this audio signal characteristics vector that Mel cepstrum parametric method is analyzed.
21. the sound playing system of alarm according various acoustic signals according to claim 12, wherein, this speaker-dependent is that zero crossing number of times or the acoustic energy of calculating this voice signal are used as this audio signal characteristics.
22. according to the sound playing system of claim 20 or 21 described alarm according various acoustic signals, wherein, this speaker-dependent relatively in the feature of this ambient sound and this database comparative approach of the feature of all kinds of sound be horse Harrar Nuo Bisi Furthest Neighbor.
23. the transmission method of an alarm according various acoustic signals is applicable to and reminds the ambient sound that should note with the earphone or the user of the sound of headphone reception sound play device broadcast, comprises the following step:
(A) reception environment sound;
(B) extract the feature of this ambient sound;
(C) feature of this ambient sound and the feature of the multiple sound that should note are compared to judge whether this ambient sound belongs to the sound class that should note; And
(D) when this ambient sound belongs to the sound class that should note, the sound that stops to export this sound play device is warned sound to this earphone or headphone and change output into, or will warn the sound synthetic back output of sound and this sound play device.
24. sound transmission method of pointing out ambient sound according to claim 23, wherein, the proper vector that is to use the methods analyst of Mel cepstrum parameter to go out voice signal in step (B) is represented the feature of this ambient sound.
25. sound transmission method of pointing out ambient sound according to claim 23 wherein, calculates the zero crossing number of times of this ambient sound or the feature that acoustic energy is used as this ambient sound in step (B).
26., wherein, in step (C), come the feature of this ambient sound relatively and the feature of these a plurality of sound that should note with horse Harrar Nuo Bisi Furthest Neighbor according to claim 24 or 25 described sound transmission methods of pointing out ambient sound.
27. sound transmission method of pointing out ambient sound according to claim 23 wherein, utilizes the sound of making in advance to warn sound as this in step (D).
28. sound transmission method of pointing out ambient sound according to claim 23 wherein, in step (D), when this ambient sound belongs to the sound class that should note, is directly worked as this caution voice output with this ambient sound.
29. sound transmission method of pointing out ambient sound according to claim 23 wherein, in step (D), when this ambient sound does not belong to the sound class that should note, exports this ambient sound and anti-phase sound wave thereof to this earphone or headphone.
CNA2005100846779A 2005-07-14 2005-07-14 Device and method for transmitting alarm according various acoustic signals Pending CN1897054A (en)

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PCT/JP2006/314321 WO2007007916A1 (en) 2005-07-14 2006-07-13 Transmitting apparatus and method capable of generating a warning depending on sound types

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