JP2003153398A - Sound image localization apparatus in forward and backward direction by headphone and method therefor - Google Patents
Sound image localization apparatus in forward and backward direction by headphone and method thereforInfo
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- JP2003153398A JP2003153398A JP2001344776A JP2001344776A JP2003153398A JP 2003153398 A JP2003153398 A JP 2003153398A JP 2001344776 A JP2001344776 A JP 2001344776A JP 2001344776 A JP2001344776 A JP 2001344776A JP 2003153398 A JP2003153398 A JP 2003153398A
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- sound image
- filter
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ヘッドホンにおい
て簡便な方法で前後方向に音像を忠実に再現し定位させ
るヘッドホンによる前後方向への音像定位装置およびそ
の方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front and rear sound image localization device for a headphone that faithfully reproduces and localizes a sound image in the front and rear direction in a headphone and a method thereof.
【０００２】[0002]
【従来の技術】ヘッドホンをもちいてＣＤなどの音源を
聴取すると一般に音像は前方ではなく頭の中に定位し、
頭内定位と云われている。2. Description of the Related Art When a sound source such as a CD is heard using headphones, the sound image is generally localized in the head, not in the front,
It is called intracranial localization.
【０００３】これに対し映画館にいるようにサラウンド
効果を得てあたかも前後方向から音が出ているようにヘ
ッドホンで音を再現しようとする装置もあり、バーチャ
ルサウンドと云われている。On the other hand, there is also a device that obtains a surround effect as in a movie theater and reproduces the sound with headphones as if the sound is coming from the front and rear direction, which is called a virtual sound.
【０００４】この前後方向からの音をヘッドホンで再現
する装置としては頭部伝達関数（ＨＲＴＦとも云われHe
ad-Related Transfer Functionの略）を用いたものがよ
く用いられている。例えば、ドルビーが推奨するサラウ
ンドヘッドホンにおいては音源の配置に対応した５ｃｈ
の音源信号をヘッドホンで再生するため、前方向の３チ
ャンネル（Ｌ、Ｃ、Ｒ）と、後方向の２チャンネル（Ｓ
Ｌ、ＳＲ）とのそれぞれの音源信号に音源方向に対応す
る頭部伝達関数を通してヘッドホンに入力している。こ
の場合、臨場感の再現にも限界があり、また、ヘッドホ
ンでは前後方向からの音の到来を表現することか困難で
あった。As a device for reproducing the sound from the front-back direction with headphones, a head-related transfer function (also called HRTF) is used.
The abbreviation for ad-Related Transfer Function) is often used. For example, in the surround headphones recommended by Dolby, 5ch corresponding to the arrangement of sound sources
To reproduce the sound source signal of the headphone with headphones, three channels (L, C, R) in the forward direction and two channels (S) in the backward direction are used.
Each of the sound source signals (L, SR) is input to the headphones through a head related transfer function corresponding to the sound source direction. In this case, there is a limit to the reproduction of the realistic sensation, and it is difficult for the headphones to express the arrival of sound from the front and rear directions.
【０００５】そこで、前後感の判断は単耳スペクトルの
ピークが手がかりの一つであるらしいということは例え
ばＳｐａｃｉａｌＨｅａｒｉｎｇ（ブラウエルト著）で
も明らかになっており、例えば、特開平１０−１３６４
９７号公報や特開平９−２３３６００号公報でも特定の
周波数を増加もしくは減少させることで前後感を出す試
みがある。Therefore, it has been clarified in, for example, SpatialHearing (written by Brauert) that the peak of the mono-ear spectrum seems to be one of the clues for the judgment of the front-back feeling.
No. 97 and Japanese Patent Laid-Open No. 9-233600 also attempt to give a sense of back and forth by increasing or decreasing a specific frequency.
【０００６】しかし、これらは特定周波数以外の再現の
ことは全く考えられておらず、聴取者本人の頭部伝達関
数を使っていないため、前後方向から音が到来したとき
の頭部伝達関数を忠実に再現したものではなく、各聴取
者本人に対し前後感を表現したものであるとは云えな
い。However, these are not considered to be reproduced at frequencies other than a specific frequency, and since the head related transfer function of the listener himself is not used, the head related transfer function when a sound arrives from the front-back direction is obtained. It is not a faithful reproduction, and it cannot be said that it expresses the sense of front and back for each listener.
【０００７】そのため、聴取者自身の頭部伝達関数を測
定し、それを再現することで音源を前方もしくは後方に
定位させる試みがある。しかし、聴取者自身の頭部伝達
関数を測定するためには小型かつ高性能のマイクロホン
を聴取者の外耳道に装着せねばならず、外耳道の密閉度
などがその測定精度に影響を与えるなど困難なことが多
い。また、ある聴取者の頭部伝達関数は他の聴取者へは
適応できず聴取者が変わるとその都度頭部伝達関数を測
定しなおさねばならず手間がかかり現実的ではなく、不
特定多数の聴取者が使用する場合その都度測定してデー
タを保存しなければならないなど不便な点が多い。Therefore, there is an attempt to measure the head related transfer function of the listener himself and reproduce it to localize the sound source forward or backward. However, in order to measure the head-related transfer function of the listener himself, it is necessary to attach a small and high-performance microphone to the ear canal of the listener, and it is difficult that the degree of sealing of the ear canal affects the measurement accuracy. Often. In addition, the head-related transfer function of one listener cannot be adapted to other listeners, and the head-related transfer function must be remeasured each time the listener changes, which is time-consuming and unrealistic. When used by listeners, there are many inconveniences such as having to measure each time and save the data.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、このような
従来の問題を解決するためになされたもので、簡便な方
法で前後方向に音像を忠実に再現し定位させるヘッドホ
ンによる前後方向への音像定位装置およびその方法を提
供するものである。SUMMARY OF THE INVENTION The present invention has been made in order to solve such a conventional problem, and a headphone that faithfully reproduces and localizes a sound image in the front-back direction by a simple method is used. A sound image localization apparatus and method thereof.
【０００９】[0009]
【課題を解決するための手段】本発明のヘッドホンによ
る前後方向への音像定位装置は、前後方向に対応する予
め定めた調整可能の頭部伝達関数を模したフィルタを備
え、前記フィルタを通してヘッドホンに音源信号を入力
し前後に音像を定位させることとした。A sound image localization device for headphones in the front-rear direction according to the present invention includes a filter simulating a predetermined adjustable head-related transfer function corresponding to the front-rear direction. We decided to input the sound source signal and localize the sound image before and after.
【００１０】また、本発明のヘッドホンによる前後方向
への音像定位装置は、拡散音場における単耳スペクトル
を模擬したディフューズフィルタと、可聴帯域において
予め定めた中心周波数と前記中心周波数の半値幅とを可
変とし前記フィルタに直列に接続するフロント／リアフ
ィルタとを備え、聴取者特有の頭部伝達関数を再現し前
後に音像を定位させることとした。Further, the sound image localization device using the headphones of the present invention in the front-rear direction has a diffuse filter simulating a monaural spectrum in a diffuse sound field, a center frequency predetermined in the audible band, and a half width of the center frequency. And a front / rear filter connected in series to the filter to reproduce the head-related transfer function peculiar to the listener and localize the sound image before and after.
【００１１】また、前記フロント／リアフィルタは、前
記音像を前方向に定位させるときには４ｋＨｚの予め定
めた附近にピークと、８ｋＨｚの予め定めた附近にディ
ップとを、後方向に定位させるときには４ｋＨｚの予め
定めた附近にディップと、１０ｋＨｚの予め定めた附近
にディップとをつくるように調整され、前記中心周波数
と前記中心周波数の半値幅との調整により前記聴取者特
有の頭部伝達関数を再現することとした。Further, the front / rear filter has a peak near a predetermined distance of 4 kHz and a dip near a predetermined frequency of 8 kHz when the sound image is localized in the forward direction, and a peak of 4 kHz when the sound image is localized in the backward direction. The head-related transfer function peculiar to the listener is reproduced by adjusting the center frequency and the half-width of the center frequency so as to make a dip at a predetermined vicinity and a dip at a predetermined vicinity of 10 kHz. I decided.
【００１２】また、本発明のヘッドホンによる前後方向
への音像定位方法は、前後方向に対応する予め定めた調
整可能の頭部伝達関数を模したフィルタを通してヘッド
ホンに音源信号を入力し前後に音像を定位させることと
した。Further, according to the sound image localization method in the front-back direction by the headphones of the present invention, a sound source signal is input to the headphones through a filter simulating a predetermined adjustable head-related transfer function corresponding to the front-back direction, and the sound image is reproduced in the front-rear direction. I decided to position it.
【００１３】また、本発明のヘッドホンによる前後方向
への音像定位方法は、拡散音場における単耳スペクトル
を模擬したディフューズフィルタと、可聴帯域において
予め定めた中心周波数と前記中心周波数の半値幅とを可
変とするフロント／リアフィルタとを直列に接続し、聴
取者特有の頭部伝達関数を再現し前後に音像を定位させ
ることとした。Further, the sound image localization method in the front-back direction by the headphones of the present invention comprises a diffuse filter simulating a monaural spectrum in a diffuse sound field, a center frequency predetermined in an audible band, and a half width of the center frequency. It was decided to connect a front / rear filter that can be varied in series to reproduce the head-related transfer function peculiar to the listener and localize the sound image before and after.
【００１４】さらに、前記音像を前方向に定位させると
きには４ｋＨｚの予め定めた附近にピークと、８ｋＨｚ
の予め定めた附近にディップとを、後方向に定位させる
ときには４ｋＨｚの予め定めた附近にディップと、１０
ｋＨｚの予め定めた附近にディップとをつくるように前
記フロント／リアフィルタは調整され、前記中心周波数
の半値幅との調整により前記聴取者特有の頭部伝達関数
を再現することとした。Further, when the sound image is localized in the forward direction, there is a peak near a predetermined frequency of 4 kHz and 8 kHz.
And a dip in the vicinity of a predetermined distance of 4 kHz and 10 kHz when a localization is performed in the backward direction.
The front / rear filter is adjusted so as to make a dip near a predetermined frequency of kHz, and the head-related transfer function peculiar to the listener is reproduced by adjusting the front / rear filter with the half width of the center frequency.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図面を用いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１６】図１は、本発明のヘッドホンによる前後方
向への音像定位装置１０のブロック図を示す。FIG. 1 shows a block diagram of a sound image localization device 10 in the front-back direction by the headphones of the present invention.
【００１７】図１に示すように、ヘッドホンによる前後
方向への音像定位装置１０は、モノまたはステレオの音
源信号１３を入力するディフューズフィルタ１１と、デ
ィフューズフィルタ１１よりの出力信号１４を入力しヘ
ッドホン１５に出力するフロント／リアフィルタ１２と
を備えている。As shown in FIG. 1, a sound image localization device 10 using headphones for front and rear directions inputs a diffuse filter 11 for inputting a mono or stereo sound source signal 13 and an output signal 14 from the diffuse filter 11. The front / rear filter 12 that outputs to the headphones 15 is provided.
【００１８】ディフューズフィルタ１１に入力したモノ
またはステレオの音源信号１３は拡散音場における単耳
スペクトルを模擬したものであり、これはあらゆる方向
に対応した頭部伝達関数のスペクトルの平均値である。The mono or stereo sound source signal 13 input to the diffuse filter 11 simulates a monaural spectrum in a diffuse sound field, and this is an average value of the spectrum of the head related transfer function corresponding to all directions. .
【００１９】図２は、単耳スペクトルを測定するときの
測定図を示す。FIG. 2 shows a measurement diagram when measuring a single ear spectrum.
【００２０】図２に示すように、単耳スペクトルは、ダ
ミーヘッド２０（例えば、KnowlesElectronics Company
製のＫＥＭＡＲダミーヘッド）に対して水平面の５°お
きに音源を配置し│Ｈｎ（ｆ）│の測定により求められ
る。│Ｈｎ（ｆ）│は、複数の音源No.1、No.２、No.ｎ
…（６個以上）を等間隔に配置したときｎ番目の音源の
方向における左耳の頭部伝達関数の絶対値である。As shown in FIG. 2, the monaural spectrum is recorded in the dummy head 20 (eg, Knowles Electronics Company).
(KEMAR dummy head manufactured by K.M.A.) and a sound source is arranged at every 5 ° of the horizontal plane, and it is determined by measuring | Hn (f) |. │Hn (f) │ is a multiple sound source No.1, No.2, No.n
It is the absolute value of the head-related transfer function of the left ear in the direction of the n-th sound source when (6 or more) are arranged at equal intervals.
【００２１】図３は、ディフューズフィルタ１１の周波
数特性を示す。このディフューズフィルタ１１を通すこ
とで音源信号１３に臨場感を与えることができる。FIG. 3 shows the frequency characteristic of the diffuse filter 11. By passing through the diffuse filter 11, it is possible to give the sound source signal 13 a realistic sensation.
【００２２】図４は、拡散音場における単耳スペクトル
を基準とした前後方向から音が到来したときの相対単耳
スペクトルを示す。FIG. 4 shows a relative mono-ear spectrum when a sound arrives from the front-back direction with reference to the mono-ear spectrum in a diffuse sound field.
【００２３】図４に示すように、音源が前方にある場合
の単耳スペクトル１２Ｆは拡散音場に比べ約４ｋＨｚに
ピークが、約８ｋＨｚにディップがある。後方にある場
合の単耳スペクトル１２Ｒは約４ｋＨｚ附近にディップ
が、約１０ｋＨｚ附近にディップがある。As shown in FIG. 4, the mono-ear spectrum 12F when the sound source is in front has a peak at about 4 kHz and a dip at about 8 kHz compared to the diffuse sound field. The mono-ear spectrum 12R in the case of being rearward has a dip near about 4 kHz and a dip near about 10 kHz.
【００２４】図５は、フロント／リアフィルタ１２の周
波数特性を示す。FIG. 5 shows the frequency characteristics of the front / rear filter 12.
【００２５】図５に示すように、フロント／リアフィル
タ１２は、拡散音場における単耳スペクトルを模擬した
ディフューズフィルタ１１よりの出力信号１４を入力
し、ピークやディップの中心周波数と半値幅を可変とす
る。前方に定位させる場合は４ｋＨｚ附近にピークＦＰ
１と、８ｋＨｚ附近にディップＦＤ１とを、後方に定位
させる場合は４ｋＨｚ附近にディップＲＤ１と、１０ｋ
Ｈｚ附近にディップＲＤ２とをつくるようにする。ただ
し、ピークやディップの中心周波数や半値幅の最適値は
聴取者によって異なるので各聴取者にとって前後感が一
番感じられるよう中心周波数、半値幅を調整する。As shown in FIG. 5, the front / rear filter 12 inputs the output signal 14 from the diffuse filter 11 simulating a mono-ear spectrum in a diffuse sound field, and determines the center frequency and half width of peaks and dips. It is variable. When localized in the front, peak FP near 4 kHz
1 and 8 kHz near the dip FD1, and when localized backward, dip RD1 near 4 kHz and 10 k
Make a dip RD2 near Hz. However, since the optimum values of the center frequency and the half-value width of the peaks and dips differ depending on the listener, the center frequency and the half-value width are adjusted so that each listener feels the front and back feeling most.
【００２６】以上、本発明のヘッドホンによる前後方向
への音像定位装置１０は、聴取者の頭部伝達関数を測定
するという手間をかけずに各聴取者に対し前後方向の音
像を忠実に再現でき、また出力信号に時間差、レベル差
を与えることで水平面のあらゆる方向に音像を容易に再
現することができる。As described above, the front-back sound image localization device 10 of the present invention can faithfully reproduce the front-back sound image for each listener without the trouble of measuring the head-related transfer function of the listener. Moreover, by giving a time difference and a level difference to the output signal, a sound image can be easily reproduced in any direction on the horizontal plane.
【００２７】なお、上記の実施の形態では、ヘッドホン
による前後方向への音像定位装置について説明したが、
ディフューズフィルタ１１とフロント／リアフィルタ１
２とを機能手順とし、ヘッドホンによる前後方向への音
像定位方法とすることができる。In the above embodiment, the sound image localization device using the headphones in the front-rear direction has been described.
Diffuse filter 11 and front / rear filter 1
2 can be used as a functional procedure, and a sound image localization method can be performed in the front-back direction by headphones.
【００２８】[0028]
【発明の効果】本発明のヘッドホンによる前後方向への
音像定位装置は、前後方向に対応する予め定めた調整可
能の頭部伝達関数を模したフィルタを備え、前記フィル
タを通してヘッドホンに音源信号を入力し前後に音像を
定位させることとしたため、ヘッドホンにおいて簡便な
方法で前後方向に音像を忠実に再現し定位させることが
できる。The sound image localization device for headphones in the front-rear direction of the present invention includes a filter simulating a predetermined adjustable head-related transfer function corresponding to the front-rear direction, and inputs a sound source signal to the headphones through the filter. Since the sound image is localized in the front and back, it is possible to faithfully reproduce and localize the sound image in the front and rear direction by a simple method in headphones.
【００２９】また、本発明のヘッドホンによる前後方向
への音像定位装置は、拡散音場における単耳スペクトル
を模擬したディフューズフィルタと、可聴帯域において
予め定めた中心周波数と前記中心周波数の半値幅とを可
変とし前記フィルタに直列に接続するフロント／リアフ
ィルタとを備え、聴取者特有の頭部伝達関数を再現し前
後に音像を定位させることとしたため、ヘッドホンにお
いて臨場感を得て簡便な方法で前後方向に音像を忠実に
再現し定位させることができる。Further, the sound image localization device using the headphones of the present invention in the front-rear direction has a diffuse filter simulating a monaural spectrum in a diffuse sound field, a center frequency predetermined in the audible band, and a half width of the center frequency. And a front / rear filter that is connected in series to the filter and reproduces the head-related transfer function peculiar to the listener to localize the sound image in the front and back. The sound image can be faithfully reproduced and localized in the front-back direction.
【００３０】また、前記フロント／リアフィルタは、前
記音像を前方向に定位させるときには４ｋＨｚの予め定
めた附近にピークと、８ｋＨｚの予め定めた附近にディ
ップとを、後方向に定位させるときには４ｋＨｚの予め
定めた附近にディップと、１０ｋＨｚの予め定めた附近
にディップとをつくるように調整され、前記中心周波数
と前記中心周波数の半値幅との調整により前記聴取者特
有の頭部伝達関数を再現することとしたため、聴取者の
頭部伝達関数を測定するという手間をかけずに各聴取者
に対し前後方向の音像を確実に再現し定位させることが
できる。The front / rear filter has a peak near a predetermined frequency of 4 kHz and a dip near the predetermined frequency of 8 kHz when the sound image is localized in the forward direction, and a peak of 4 kHz when the sound image is localized in the backward direction. The head-related transfer function peculiar to the listener is reproduced by adjusting the center frequency and the half-width of the center frequency so as to make a dip at a predetermined vicinity and a dip at a predetermined vicinity of 10 kHz. Therefore, it is possible to surely reproduce and localize the sound image in the front-back direction for each listener without the trouble of measuring the head-related transfer function of the listener.
【００３１】また、本発明のヘッドホンによる前後方向
への音像定位方法は、前後方向に対応する予め定めた調
整可能の頭部伝達関数を模したフィルタを通してヘッド
ホンに音源信号を入力し前後に音像を定位させることと
したため、ヘッドホンにおいて簡便な方法で前後方向に
音像を忠実に再現し定位させることができる。Further, in the sound image localization method using the headphones in the front-rear direction, a sound source signal is input to the headphones through a filter simulating a predetermined adjustable head-related transfer function corresponding to the front-rear direction to generate sound images in the front-rear direction. Since the sound is localized, it is possible to faithfully reproduce the sound image in the front-rear direction and localize the sound with a simple method in the headphones.
【００３２】また、本発明のヘッドホンによる前後方向
への音像定位方法は、拡散音場における単耳スペクトル
を模擬したディフューズフィルタと、可聴帯域において
予め定めた中心周波数と前記中心周波数の半値幅とを可
変とするフロント／リアフィルタとを直列に接続し、聴
取者特有の頭部伝達関数を再現し前後に音像を定位させ
ることとしたため、ヘッドホンにおいて臨場感を得て簡
便な方法で前後方向に音像を忠実に再現し定位させるこ
とができる。Further, the sound image localization method using the headphones of the present invention in the front-rear direction includes a diffuse filter simulating a monaural spectrum in a diffuse sound field, a center frequency predetermined in an audible band, and a half width of the center frequency. By connecting a front / rear filter that can change the position in series, and reproducing the head-related transfer function peculiar to the listener to localize the sound image in the front and back, it is possible to obtain a sense of presence in the headphones in the front-back direction by a simple method. The sound image can be faithfully reproduced and localized.
【００３３】さらに、前記音像を前方向に定位させると
きには４ｋＨｚの予め定めた附近にピークと、８ｋＨｚ
の予め定めた附近にディップとを、後方向に定位させる
ときには４ｋＨｚの予め定めた附近にディップと、１０
ｋＨｚの予め定めた附近にディップとをつくるように前
記フロント／リアフィルタは調整され、前記中心周波数
の半値幅との調整により前記聴取者特有の頭部伝達関数
を再現することとしたため、聴取者の頭部伝達関数を測
定するという手間をかけずに各聴取者に対し前後方向の
音像を確実に再現し定位させることができる。Further, when the sound image is localized in the forward direction, there is a peak near a predetermined frequency of 4 kHz and 8 kHz.
And a dip in the vicinity of a predetermined distance of 4 kHz and 10 kHz when a localization is performed in the backward direction.
The front / rear filter is adjusted so as to create a dip near a predetermined frequency of kHz, and the head-related transfer function peculiar to the listener is reproduced by adjusting the half-width of the center frequency. The sound image in the front-back direction can be reliably reproduced and localized for each listener without the trouble of measuring the head-related transfer function.
【図１】本発明のヘッドホンによる前後方向への音像定
位装置のブロック図を示す。FIG. 1 shows a block diagram of a sound image localization device in the front-rear direction using headphones of the present invention.
【図２】単耳スペクトルを測定するときの測定図を示
す。FIG. 2 shows a measurement diagram when measuring a single ear spectrum.
【図３】ディフューズフィルタの周波数特性を示す。FIG. 3 shows frequency characteristics of a diffuse filter.
【図４】拡散音場における単耳スペクトルを基準とした
前後方向から音が到来したときの相対単耳スペクトルを
示す。FIG. 4 shows a relative mono-ear spectrum when a sound arrives from the front-back direction with reference to the mono-ear spectrum in a diffuse sound field.
【図５】フロント／リアフィルタの周波数特性を示す。FIG. 5 shows frequency characteristics of a front / rear filter.
１０ ヘッドホンによる前後方向への音像定位装置 １１ ディフューズフィルタ １２ フロント／リアフィルタ １３ 音源信号 １４ 出力信号 １５ ヘッドホン ２０ ダミーヘッド 10 Sound image localization device in the front-back direction using headphones 11 Diffuse filter 12 front / rear filters 13 Sound source signal 14 Output signal 15 headphones 20 dummy head
───────────────────────────────────────────────────── フロントページの続き (72)発明者 濱崎 公男 東京都世田谷区砧一丁目10番11号 日本放 送協会 放送技術研究所内 Ｆターム(参考） 5D062 AA74 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kimio Hamasaki 1-10-11 Kinuta, Setagaya-ku, Tokyo, Japan Broadcasting Association Broadcast Technology Institute F-term (reference) 5D062 AA74
Claims (6)
頭部伝達関数を模したフィルタを備え、前記フィルタを
通してヘッドホンに音源信号を入力し前後に音像を定位
させることを特徴とするヘッドホンによる前後方向への
音像定位装置。1. A headphone comprising a filter simulating a predetermined adjustable head-related transfer function corresponding to the front-back direction, and inputting a sound source signal to the headphone through the filter to localize a sound image in the front-back direction. Sound image localization device in the front-back direction.
たディフューズフィルタと、可聴帯域において予め定め
た中心周波数と前記中心周波数の半値幅とを可変とし前
記フィルタに直列に接続するフロント／リアフィルタと
を備え、聴取者特有の頭部伝達関数を再現し前後に音像
を定位させることを特徴とするヘッドホンによる前後方
向への音像定位装置。2. A diffuse filter simulating a monaural spectrum in a diffuse sound field, and a front / rear filter in which a predetermined center frequency and a half width of the center frequency are made variable in an audible band and are connected in series to the filter. And a sound image localization device in the front-rear direction using headphones, which reproduces a head-related transfer function peculiar to a listener and localizes a sound image in the front-rear direction.
を前方向に定位させるときには４ｋＨｚの予め定めた附
近にピークと、８ｋＨｚの予め定めた附近にディップと
を、後方向に定位させるときには４ｋＨｚの予め定めた
附近にディップと、１０ｋＨｚの予め定めた附近にディ
ップとをつくるように調整され、前記中心周波数と前記
中心周波数の半値幅との調整により前記聴取者特有の頭
部伝達関数を再現することを特徴とする請求項２に記載
のヘッドホンによる前後方向への音像定位装置。3. The front / rear filter has a peak at a predetermined vicinity of 4 kHz and a dip at a predetermined vicinity of 8 kHz when the sound image is localized in the forward direction, and a peak of 4 kHz when localized in the rear direction. The head-related transfer function peculiar to the listener is reproduced by adjusting the center frequency and the half-width of the center frequency so as to make a dip at a predetermined vicinity and a dip at a predetermined vicinity of 10 kHz. The sound image localization device in the front-rear direction using the headphones according to claim 2.
頭部伝達関数を模したフィルタを通してヘッドホンに音
源信号を入力し前後に音像を定位させることを特徴とす
るヘッドホンによる前後方向への音像定位方法。4. A sound image in the front-rear direction by the headphone, wherein a sound source signal is input to the headphone through a filter simulating a predetermined adjustable head-related transfer function corresponding to the front-rear direction to localize the sound image in the front-rear direction. Localization method.
たディフューズフィルタと、可聴帯域において予め定め
た中心周波数と前記中心周波数の半値幅とを可変とする
フロント／リアフィルタとを直列に接続し、聴取者特有
の頭部伝達関数を再現し前後に音像を定位させることを
特徴とするヘッドホンによる前後方向への音像定位方
法。5. A diffuse filter simulating a monaural spectrum in a diffuse sound field, and a front / rear filter for varying a predetermined center frequency and a half width of the center frequency in an audible band are connected in series. , A sound image localization method in the front-back direction by headphones, which reproduces a head-related transfer function peculiar to the listener and localizes the sound image in the front-rear direction.
ｋＨｚの予め定めた附近にピークと、８ｋＨｚの予め定
めた附近にディップとを、後方向に定位させるときには
４ｋＨｚの予め定めた附近にディップと、１０ｋＨｚの
予め定めた附近にディップとをつくるように前記フロン
ト／リアフィルタは調整され、前記中心周波数の半値幅
との調整により前記聴取者特有の頭部伝達関数を再現す
ることを特徴とする請求項５に記載のヘッドホンによる
前後方向への音像定位方法。6. When the sound image is localized in the forward direction, 4
A peak near a predetermined frequency of kHz and a dip near a predetermined frequency of 8 kHz, and when a rearward localization is performed, a dip near a predetermined frequency of 4 kHz and a dip near a predetermined frequency of 10 kHz are created. The sound image localization in the front-back direction by the headphones according to claim 5, wherein the front / rear filter is adjusted to reproduce the head-related transfer function specific to the listener by adjusting the front-rear filter with the half-width of the center frequency. Method.
Priority Applications (1)
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|---|---|---|---|
| JP2001344776A JP2003153398A (en) | 2001-11-09 | 2001-11-09 | Sound image localization apparatus in forward and backward direction by headphone and method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001344776A JP2003153398A (en) | 2001-11-09 | 2001-11-09 | Sound image localization apparatus in forward and backward direction by headphone and method therefor |
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|---|---|
| JP2003153398A true JP2003153398A (en) | 2003-05-23 |
Family
ID=19158245
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001344776A Pending JP2003153398A (en) | 2001-11-09 | 2001-11-09 | Sound image localization apparatus in forward and backward direction by headphone and method therefor |
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| Country | Link |
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| JP (1) | JP2003153398A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006203850A (en) * | 2004-12-24 | 2006-08-03 | Matsushita Electric Ind Co Ltd | Sound image locating device |
| JP2007110206A (en) * | 2005-10-11 | 2007-04-26 | Yamaha Corp | Signal processing apparatus and sound image localizing apparatus |
| WO2008047833A1 (en) * | 2006-10-19 | 2008-04-24 | Panasonic Corporation | Sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
| JP2008211834A (en) * | 2004-12-24 | 2008-09-11 | Matsushita Electric Ind Co Ltd | Sound image localization apparatus |
| EP2134108A1 (en) * | 2008-06-10 | 2009-12-16 | Yamaha Corporation | Sound processing device, speaker apparatus, and sound processing method |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52141601A (en) * | 1976-05-20 | 1977-11-26 | Torio Kk | Stereophonic reproducer for headphone |
| JPS5364003A (en) * | 1976-11-19 | 1978-06-08 | Torio Kk | Signal processor for headset |
| JPS5431702A (en) * | 1977-08-15 | 1979-03-08 | Hitachi Ltd | Binaural stereo reproduction circuit |
| JPS5451517A (en) * | 1977-09-30 | 1979-04-23 | Torio Kk | Device of correcting signal for headphone |
| JPS5458402A (en) * | 1977-10-18 | 1979-05-11 | Torio Kk | Binaural signal corrector |
| JPS54151401A (en) * | 1978-05-19 | 1979-11-28 | Torio Kk | Acoustic signal reproducer |
| JPH0418900A (en) * | 1990-05-11 | 1992-01-23 | Sony Corp | Recording/reproducing device |
| JPH06233600A (en) * | 1993-02-02 | 1994-08-19 | Fuji Electric Co Ltd | Field circuit of alternator |
| JPH06269097A (en) * | 1993-03-11 | 1994-09-22 | Sony Corp | Acoustic equipment |
| JPH09182199A (en) * | 1995-12-22 | 1997-07-11 | Kawai Musical Instr Mfg Co Ltd | Sound image controller and sound image control method |
| JPH09284899A (en) * | 1996-04-08 | 1997-10-31 | Matsushita Electric Ind Co Ltd | Signal processor |
| JPH1070796A (en) * | 1996-08-29 | 1998-03-10 | Fujitsu Ltd | Stereophonic sound processor |
| JPH10136497A (en) * | 1996-10-24 | 1998-05-22 | Roland Corp | Sound image localizing device |
| JP2000115899A (en) * | 1998-09-30 | 2000-04-21 | Open Heart:Kk | Method for localizing sound image at outside of head in listening to reproduction sound by headphone and device for the same |
| JP2001016697A (en) * | 1999-05-29 | 2001-01-19 | Central Res Lab Ltd | Method and device correcting original head related transfer function |
-
2001
- 2001-11-09 JP JP2001344776A patent/JP2003153398A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52141601A (en) * | 1976-05-20 | 1977-11-26 | Torio Kk | Stereophonic reproducer for headphone |
| JPS5364003A (en) * | 1976-11-19 | 1978-06-08 | Torio Kk | Signal processor for headset |
| JPS5431702A (en) * | 1977-08-15 | 1979-03-08 | Hitachi Ltd | Binaural stereo reproduction circuit |
| JPS5451517A (en) * | 1977-09-30 | 1979-04-23 | Torio Kk | Device of correcting signal for headphone |
| JPS5458402A (en) * | 1977-10-18 | 1979-05-11 | Torio Kk | Binaural signal corrector |
| JPS54151401A (en) * | 1978-05-19 | 1979-11-28 | Torio Kk | Acoustic signal reproducer |
| JPH0418900A (en) * | 1990-05-11 | 1992-01-23 | Sony Corp | Recording/reproducing device |
| JPH06233600A (en) * | 1993-02-02 | 1994-08-19 | Fuji Electric Co Ltd | Field circuit of alternator |
| JPH06269097A (en) * | 1993-03-11 | 1994-09-22 | Sony Corp | Acoustic equipment |
| JPH09182199A (en) * | 1995-12-22 | 1997-07-11 | Kawai Musical Instr Mfg Co Ltd | Sound image controller and sound image control method |
| JPH09284899A (en) * | 1996-04-08 | 1997-10-31 | Matsushita Electric Ind Co Ltd | Signal processor |
| JPH1070796A (en) * | 1996-08-29 | 1998-03-10 | Fujitsu Ltd | Stereophonic sound processor |
| JPH10136497A (en) * | 1996-10-24 | 1998-05-22 | Roland Corp | Sound image localizing device |
| JP2000115899A (en) * | 1998-09-30 | 2000-04-21 | Open Heart:Kk | Method for localizing sound image at outside of head in listening to reproduction sound by headphone and device for the same |
| JP2001016697A (en) * | 1999-05-29 | 2001-01-19 | Central Res Lab Ltd | Method and device correcting original head related transfer function |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008211834A (en) * | 2004-12-24 | 2008-09-11 | Matsushita Electric Ind Co Ltd | Sound image localization apparatus |
| JP4694590B2 (en) * | 2004-12-24 | 2011-06-08 | パナソニック株式会社 | Sound image localization device |
| JP2006203850A (en) * | 2004-12-24 | 2006-08-03 | Matsushita Electric Ind Co Ltd | Sound image locating device |
| JP2007110206A (en) * | 2005-10-11 | 2007-04-26 | Yamaha Corp | Signal processing apparatus and sound image localizing apparatus |
| US8116458B2 (en) | 2006-10-19 | 2012-02-14 | Panasonic Corporation | Acoustic image localization apparatus, acoustic image localization system, and acoustic image localization method, program and integrated circuit |
| WO2008047833A1 (en) * | 2006-10-19 | 2008-04-24 | Panasonic Corporation | Sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
| JP5448451B2 (en) * | 2006-10-19 | 2014-03-19 | パナソニック株式会社 | Sound image localization apparatus, sound image localization system, sound image localization method, program, and integrated circuit |
| CN101529930B (en) * | 2006-10-19 | 2011-11-30 | 松下电器产业株式会社 | sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
| US8553893B2 (en) | 2008-06-10 | 2013-10-08 | Yamaha Corporation | Sound processing device, speaker apparatus, and sound processing method |
| EP2134108A1 (en) * | 2008-06-10 | 2009-12-16 | Yamaha Corporation | Sound processing device, speaker apparatus, and sound processing method |
| JP2012004816A (en) * | 2010-06-16 | 2012-01-05 | Nippon Telegr & Teleph Corp <Ntt> | Sound source localization method, sound source localization apparatus, and program |
| US20130243226A1 (en) * | 2012-03-16 | 2013-09-19 | Panasonic Corporation | Sound image localization device |
| JP2013219731A (en) * | 2012-03-16 | 2013-10-24 | Panasonic Corp | Sound image localization device and sound image localization program |
| US8934651B2 (en) | 2012-03-16 | 2015-01-13 | Panasonic Intellectual Property Management Co., Ltd. | Sound image localization device |
| WO2014030560A1 (en) * | 2012-08-23 | 2014-02-27 | ソニー株式会社 | Audio processing device, method, and program |
| JP2014060691A (en) * | 2012-08-23 | 2014-04-03 | Sony Corp | Voice processing device, method and program |
| CN104604254A (en) * | 2012-08-23 | 2015-05-06 | 索尼公司 | Audio processing device, method, and program |
| US9577595B2 (en) | 2012-08-23 | 2017-02-21 | Sony Corporation | Sound processing apparatus, sound processing method, and program |
| JP2014068266A (en) * | 2012-09-26 | 2014-04-17 | Toshiba Corp | Acoustic controller |
| WO2020138257A1 (en) * | 2018-12-28 | 2020-07-02 | ソニー株式会社 | Information processing device, information processing method, and information processing program |
| US11956621B2 (en) | 2018-12-28 | 2024-04-09 | Sony Group Corporation | Information processing apparatus, information processing method, and information processing program |
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