JP2008099220A - Acoustic apparatus associated with reduction in one's perception of one's utterance - Google Patents

Acoustic apparatus associated with reduction in one's perception of one's utterance Download PDF

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JP2008099220A
JP2008099220A JP2006300897A JP2006300897A JP2008099220A JP 2008099220 A JP2008099220 A JP 2008099220A JP 2006300897 A JP2006300897 A JP 2006300897A JP 2006300897 A JP2006300897 A JP 2006300897A JP 2008099220 A JP2008099220 A JP 2008099220A
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voice
sound
perceived
directly
utterance
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Atsushi Nakanishi
淳 中西
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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
    • G10L21/00—Processing of the speech or voice signal 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • 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
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • 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
    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/003—Changing voice quality, e.g. pitch or formants
    • G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
    • G10L21/013—Adapting to target pitch
    • G10L2021/0135—Voice conversion or morphing

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • General Health & Medical Sciences (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems wherein the voice tone, over an acoustic apparatus, cannot be adjusted readily by one's utterance as one's utterance over the acoustic apparatus is heard differently from that perceived directly, and ample effect, of pseudo-experience where as though another person's voice is being uttered, cannot be obtained, because one's voice modulated and/or converted and one's utterance perceived directly result in being perceived at the same time by a voice changer, or the like. <P>SOLUTION: The apparatus lowers one's own voice which is directly perceived by detecting one's voice that is to be perceived directly, generating sound waves that have phase reverse to that of the voice, and transmitting it, and generates one's modulated or converted voice and allows one to hear the it. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、音響機器に関するものであり、音響機器を介さずに直接知覚する自ら発する音声を低減するとともに、変調・変換された音響機器越しの自らの音声を聞こえるようにすることにより、自らの発声をもって音響機器越しの音声の調子を取りやすくするものであり、また他の人物の音声のように変調・変換した音声を聞こえるようにすることにより、他の人物の音声を発しているような擬似体験をさせるものである。  The present invention relates to an acoustic device, and reduces the sound produced by the user directly perceiving without going through the acoustic device, and allows the user to hear the sound of the user through the modulated and converted acoustic device. It makes it easy to adjust the sound of the sound through the audio equipment with the utterance, and it seems that other people's voice is emitted by making it possible to hear the modulated and converted voice like the voice of other people This is a simulated experience.

本発明に関連する、逆位相の音波により音を低減する技術を用いているものの例として、特許文献１に開示されている外部の雑音を低減するものや、特許文献２に開示されている自らの発する音声を他の人に聞かれないよう低減するものがある。また、従来から自ら発する音声を変換して他の人物のような音声を発生させるものとしてボイスチェンジャーがある。この例として、特許文献３に開示されているものがある。
特開平２−２５２３９８号公報 特開平１０−２０８６７号公報 特開平１０−２６８８７５号公報 Examples of those using a technique for reducing sound by using anti-phase sound waves related to the present invention are those that reduce external noise disclosed in Patent Document 1, and those disclosed in Patent Document 2 themselves. There is something that reduces the voice that is uttered by others. In addition, there is a voice changer that converts a sound generated by itself to generate a sound like another person. An example of this is disclosed in Patent Document 3.
JP-A-2-252398 Japanese Patent Laid-Open No. 10-20867 Japanese Patent Laid-Open No. 10-268875

自らが発する音声を音響機器越しに聞くのと、音響機器を介さずに直接知覚するのとでは、音の伝搬する経路の違い、音響機器による音の変調・変換のため異なって聞こえる。プレゼンテーションや歌を歌うといった音響機器を使用する場合において、音響機器を介さない直接知覚する自らの音声が邪魔をしてしまい、音響機器越しの音声の調子を自らの発声をもって容易に調整できないといった問題があった。  Listening to the sound generated by the user through the audio device and directly perceiving the sound without going through the audio device can be heard differently due to the difference in the sound propagation path and the modulation / conversion of the sound by the audio device. When using an audio device such as a presentation or singing, the problem is that the sound directly perceived without using the audio device gets in the way, and the tone of the sound through the audio device cannot be easily adjusted with its own voice. was there.

また、カラオケ等で使用されている音声を変調・変換し、他の人物のような音声を発生させるボイスチェンジャーなどにおいては、音響機器を介さずに直接知覚される自らの音声と、ボイスチェンジャーなどによって変調・変換された自らの音声が同時に知覚されてしまい、他の人物の音声を発しているような擬似体験の十分な効果は得られなかった。  In addition, in voice changers that modulate / convert voices used in karaoke etc. and generate voices like other people, their own voices that are directly perceived without going through acoustic equipment, voice changers, etc. The sound that was modulated / converted by the sound was perceived at the same time, and it was not possible to obtain a sufficient effect of the simulated experience of emitting the sound of another person.

本発明は、以上述べた問題を解決することを課題とする。  An object of the present invention is to solve the above-described problems.

この課題を解決するための請求項１の発明は、音響機器を介さず直接知覚される自らの音声を検出し、これと逆位相となる音波を発生、送出して音響機器を介さず直接知覚される自らの音声を打ち消し低減するとともに、変調・変換した自らの音声を発生させ、聞こえるようにしたものである。  In order to solve this problem, the invention according to claim 1 detects its own voice that is directly perceived without using an acoustic device, generates and transmits a sound wave having a phase opposite to that of the sound, and directly senses it without using the acoustic device. In addition to canceling and reducing their own voice, it also generates and modulates its own voice so that it can be heard.

これにより変調・変換された音響機器越しの音声の比率が高まり、音響機器越しの音声を明瞭に聞き取れるようになることから、音響機器越しの音声の調子を自らの発声をもって調整が取り易くなるといった効果が発揮される。  As a result, the ratio of the sound through the audio device that has been modulated / converted increases, and the audio through the audio device can be heard clearly, making it easier to adjust the tone of the audio through the audio device with your own voice. The effect is demonstrated.

また、音響機器を介さずに直接知覚される自らの音声と、他の人物の音声のように変調・変換された自らの音声が同時に知覚されなくなるため、よりリアルに他の人物の音声を発しているような擬似体験ができる。  In addition, since the own voice that is directly perceived without using an acoustic device and the own voice that is modulated and converted like the voice of another person are not perceived at the same time, the voice of the other person is emitted more realistically. You can have a simulated experience.

本発明により、音響機器を介さない直接知覚する自らの音声を低減させることから、音響機器を使用する場合において音響機器を介さない直接知覚する自らの音声が邪魔をしてしまい、音響機器越しの音声の調子を自らの発声をもって容易に調整できないといった問題は解消される。  According to the present invention, since the sound directly perceived without using the audio equipment is reduced by the present invention, the sound directly perceived without using the audio equipment gets in the way when using the audio equipment. The problem that the tone of the voice cannot be easily adjusted with its own voice is solved.

また、音響機器を介さずに直接知覚される自らの音声と、他の人物の音声のように変調・変換された自らの音声が同時に知覚されなくなり、これらが同時に知覚されてしまうことのために擬似体験の十分な効果が得られなかったという問題は解消される。  In addition, because one's own voice that is directly perceived without going through an acoustic device and one's own voice that is modulated and converted like another person's voice are not perceived at the same time, and they are perceived at the same time. The problem that the simulated experience was not fully effective is solved.

図１は本発明のシステムのブロック図である。以下図１に基づいて説明をする。これはＤＳＰを用いたデジタル処理となっているが、アナログ処理で置き換えることもできる。  FIG. 1 is a block diagram of the system of the present invention. Hereinafter, description will be given based on FIG. This is digital processing using a DSP, but it can be replaced by analog processing.

１のマイク１は人体を直接伝搬する音声を検出するためのものであり、声道に近い首や顎などに取り付けられるものであり、２のマイク２は空気中を伝搬する音声を検出するためのものである。  The first microphone 1 is for detecting sound directly propagating through the human body, and is attached to the neck and chin near the vocal tract. The second microphone 2 is for detecting sound propagating in the air. belongs to.

各々のマイクで検出した音声はデジタル処理を行うためＡ／Ｄ変換ユニットによりデジタル信号とする。この信号は音響機器を介さず直接知覚される自らの音声を低減するための逆位相の音波を作るラインと、音声の調子を変えたり、他の人物のような音声に変換するための変調・変換ラインの２つに分けられる。  The sound detected by each microphone is converted into a digital signal by the A / D conversion unit for digital processing. This signal is a line that creates sound waves with anti-phase to reduce their own voice that is directly perceived without going through an acoustic device, and a modulation and sound to change the tone of the voice or convert it to voice like another person. Divided into two conversion lines.

逆位相の音波を作るラインは位相を反転させ逆位相を作る位相反転ユニットと、信号を送出するタイミングを調整するためのタイミングユニット、信号の大きさを変えるための振幅調整ユニットから構成される。逆位相の音波を送出するタイミングとその振幅を変化させることにより、音響機器を介さず直接知覚される自らの音声が最も低減されるよう調整される。  A line for producing an anti-phase sound wave is composed of a phase inverting unit for inverting the phase to create an anti-phase, a timing unit for adjusting the timing of sending a signal, and an amplitude adjusting unit for changing the magnitude of the signal. By changing the timing and amplitude of transmitting the sound wave of the opposite phase, the sound is adjusted so as to be reduced most easily by directly perceiving it without going through the acoustic device.

音声の調子を変えたり、他の人物のような音声に変換するための音声変調・変換ラインは、音声の調子を変える伝達特性をもつフィルタや、周波数を変換するサブユニットからなる音声変調・変換ユニットと、信号を送出するタイミングを調整するためのタイミングユニット、信号の大きさを変えるための振幅調整ユニットから構成される。また、外部の音響機器に信号出力ができるよう音声変調・変換ユニットの後段の信号は分岐され、片方はＤ／Ａ変換ユニットを介してアナログ信号として外部へ提供される。  The voice modulation / conversion line for changing the tone of voice or converting it to voice like other people is a voice modulation / conversion consisting of a filter with transfer characteristics that change the tone of the voice and a subunit that converts the frequency It comprises a unit, a timing unit for adjusting the signal transmission timing, and an amplitude adjustment unit for changing the magnitude of the signal. In addition, the signal at the subsequent stage of the audio modulation / conversion unit is branched so that the signal can be output to an external audio device, and one of the signals is provided to the outside as an analog signal via the D / A conversion unit.

逆位相の音波を作るラインの出口の位相を反転、調整された信号と、音声変調・変換ラインの出口の音声を変調・変換、調整された信号は足し合わされ、そしてＤ／Ａ変換ユニットによりアナログ信号に変換される。この信号を増幅し、スピーカーから送出する。  The phase of the exit of the line that creates the opposite phase sound wave is inverted and adjusted, and the sound at the exit of the audio modulation / conversion line is modulated and converted, and the adjusted signal is added together and analogized by the D / A conversion unit Converted to a signal. This signal is amplified and sent out from the speaker.

３のスピーカー１は人体を直接伝搬する音波を送出するものであり、音響機器を介さず直接人体内部を伝搬して知覚される自らの音声を打ち消し低減するためのものである。４のスピーカー２は空気中を伝搬する音波を送出するものであり、音響機器を介さず直接空気中を伝搬して知覚される自らの音声を打ち消し低減するためのものである。  The third speaker 1 transmits sound waves directly propagating through the human body, and is for canceling and reducing the perceived sound directly propagating through the human body without passing through the acoustic device. The speaker 2 transmits sound waves propagating in the air, and is used to cancel and reduce the perceived sound directly propagating through the air without passing through an acoustic device.

なお、１のマイク１からなるユニット群と、２のマイク２からなるユニット群の両方からなる図１の構成が最も発明の効果で記載した効果が得られるが、片方のユニット群のみの構成であってもよい。  The configuration shown in FIG. 1 consisting of both a unit group consisting of one microphone 1 and a unit group consisting of two microphones 2 can achieve the effect described in the effect of the invention. However, the configuration of only one unit group can be obtained. There may be.

上述したシステムを構成することにより発明の効果で記載した効果が得られる。  By configuring the system described above, the effects described in the effects of the invention can be obtained.

本発明に係わる音響機器は工業的に量産することが可能であるため、産業上の利用可能性を有する。  Since the acoustic device according to the present invention can be industrially mass-produced, it has industrial applicability.

本発明のシステムのブロック図である。  1 is a block diagram of a system of the present invention.

符号の説明Explanation of symbols

１ 人体を直接伝搬する音声を検出するためのマイク
２ 空気中を伝搬する音声を検出するためのマイク
３ 人体を直接伝搬する音波を送出するためのスピーカー
４ 空気中を伝搬する音波を送出するためのスピーカーDESCRIPTION OF SYMBOLS 1 Microphone for detecting the sound directly propagating through the human body 2 Microphone for detecting the sound propagating through the air 3 Speaker for transmitting the sound wave directly propagating through the human body 4 For transmitting the sound wave propagating through the air Speaker

Claims (1)

直接知覚される自ら発する音声を検出し、これと逆位相となる音波を発生、送出して直接知覚される自らの音声を低減するとともに、変調・変換した自らの音声を発生させて聞かせることを特徴とする音響機器。  Detecting directly perceived speech and generating sound waves with the opposite phase to this, reducing the directly perceived speech, and generating and listening to modulated and converted speech Sound equipment characterized by.
JP2006300897A 2006-10-06 2006-10-06 Acoustic apparatus associated with reduction in one's perception of one's utterance Pending JP2008099220A (en)

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JP2006300897A JP2008099220A (en) 2006-10-06 2006-10-06 Acoustic apparatus associated with reduction in one's perception of one's utterance
PCT/JP2007/069904 WO2008044752A1 (en) 2006-10-06 2007-10-04 Audio apparatus with reduction of perception for self-uttering voice

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014112206A1 (en) * 2013-01-15 2014-07-24 ソニー株式会社 Memory control device, playback control device, and recording medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3900580B2 (en) * 1997-03-24 2007-04-04 ヤマハ株式会社 Karaoke equipment
JP2001034277A (en) * 1999-07-22 2001-02-09 Taito Corp Karaoke device with muffling function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014112206A1 (en) * 2013-01-15 2014-07-24 ソニー株式会社 Memory control device, playback control device, and recording medium
US10607625B2 (en) 2013-01-15 2020-03-31 Sony Corporation Estimating a voice signal heard by a user

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