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1. (WO2007004397) ACOUSTIC SIGNAL PROCESSING APPARATUS, ACOUSTIC SIGNAL PROCESSING METHOD, ACOUSTIC SIGNAL PROCESSING PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/004397 International Application No.: PCT/JP2006/311947
Publication Date: 11.01.2007 International Filing Date: 14.06.2006
IPC:
H04S 7/00 (2006.01) ,H04S 1/00 (2006.01) ,H04S 3/00 (2006.01) ,H04S 5/02 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
S
STEREOPHONIC SYSTEMS
7
Indicating arrangements; Control arrangements, e.g. balance control
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
S
STEREOPHONIC SYSTEMS
1
Two-channel systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
S
STEREOPHONIC SYSTEMS
3
Systems employing more than two channels, e.g. quadraphonic
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
S
STEREOPHONIC SYSTEMS
5
Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
02
of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
Applicants:
パイオニア株式会社 PIONEER CORPORATION [JP/JP]; 〒1538654 東京都目黒区目黒1丁目4番1号 Tokyo 4-1, Meguro 1-chome, Meguro-ku, Tokyo 1538654, JP (AllExceptUS)
太田 佳樹 OHTA, Yoshiki [JP/JP]; JP (UsOnly)
小幡 健作 OBATA, Kensaku [JP/JP]; JP (UsOnly)
Inventors:
太田 佳樹 OHTA, Yoshiki; JP
小幡 健作 OBATA, Kensaku; JP
Agent:
酒井 昭徳 SAKAI, Akinori; 〒1006019 東京都千代田区霞が関3丁目2番5号 霞が関ビルディング19階 酒井昭徳特許事務所 Tokyo A. SAKAI & ASSOCIATES, 19F, Kasumigaseki Building 2-5, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo 1006019, JP
Priority Data:
2005-19441301.07.2005JP
Title (EN) ACOUSTIC SIGNAL PROCESSING APPARATUS, ACOUSTIC SIGNAL PROCESSING METHOD, ACOUSTIC SIGNAL PROCESSING PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM
(FR) DISPOSITIF, PROCÉDÉ ET PROGRAMME DE TRAITEMENT DE SIGNAL ACOUSTIQUE ET SUPPORT D’ENREGISTREMENT INFORMATIQUE
(JA) 音響信号処理装置、音響信号処理方法、音響信号処理プログラムおよびコンピュータに読み取り可能な記録媒体
Abstract:
(EN) A slicing part (101) slices the acoustic signals of a plurality of channels on a time-frame-by-time-frame basis. A correction calculating part (102) obtains correction values between the signals of channels sliced by the slicing part (101) and included in a predetermined time frame. A spectrum calculating part (103) obtains spectral information indicative of the characteristic of a spectrum about the signal of a predetermined channel sliced by the slicing part (101). A coefficient calculating part (104) calculates, based on the correction values and spectral information, a coefficient by which to multiply the signal of the predetermined channel. An assigning part (105) multiplies the signal of the predetermined channel by the coefficient calculated by the coefficient calculating part (104) and assigns the resultant multiplied signal to a channel other than the predetermined channel.
(FR) Selon la présente invention, un module de découpage (101) découpe des signaux acoustiques d’une pluralité de canaux sur une base temporelle. Un module de calcul de correction (102) obtient des valeurs de correction entre les signaux de canaux traités par le module de découpage (101) et compris dans une période préétablie. Un module de calcul de spectre (103) obtient des données de spectre indiquant la caractéristique d’un spectre pour le signal d’un canal prédéterminé traité par le module de découpage (101). Un module de calcul de coefficient (104) calcule, selon les valeurs de correction et les données de spectre, un coefficient par lequel multiplier le signal du canal prédéterminé. Un module d’affectation (105) multiplie le signal du canal prédéterminé par le coefficient obtenu par le module de calcul de coefficient (104) et affecte le signal multiplié résultant à un canal autre que celui prédéterminé.
(JA)  切り出し部(101)は、複数チャンネルの音響信号を時間フレーム単位で切り出す。相関演算部(102)は、切り出し部(101)によって切り出された所定の時間フレームに含まれる複数チャンネルの信号のそれぞれの間の相関値を求める。スペクトル演算部(103)は、切り出し部(101)によって切り出された所定のチャンネルの信号について、スペクトルの特徴を示すスペクトル情報を求める。係数算出部(104)は、相関値およびスペクトル情報に基づいて、所定のチャンネルの信号に掛け合わせる係数を算出する。割り振り部(105)は、係数算出部(104)によって算出された係数を所定のチャンネルの信号に掛け合わせ、掛け合わされた信号を、所定のチャンネルの他のチャンネルに割り振る。
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US20090232321JP4392040