Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2007010771) SIGNAL PROCESSING DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/010771 International Application No.: PCT/JP2006/313655
Publication Date: 25.01.2007 International Filing Date: 10.07.2006
IPC:
H04S 5/02 (2006.01) ,G10L 19/00 (2006.01) ,H04S 5/00 (2006.01)
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
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19
Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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
Applicants:
松下電器産業株式会社 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 〒5718501 大阪府門真市大字門真1006番地 Osaka 1006, Oaza Kadoma, Kadoma-shi, Osaka 5718501, JP (AllExceptUS)
宮阪 修二 MIYASAKA, Shuji; null (UsOnly)
高木 良明 TAKAGI, Yosiaki; null (UsOnly)
則松 武志 NORIMATSU, Takeshi; null (UsOnly)
川村 明久 KAWAMURA, Akihisa; null (UsOnly)
小野 耕司郎 ONO, Kojiro; null (UsOnly)
Inventors:
宮阪 修二 MIYASAKA, Shuji; null
高木 良明 TAKAGI, Yosiaki; null
則松 武志 NORIMATSU, Takeshi; null
川村 明久 KAWAMURA, Akihisa; null
小野 耕司郎 ONO, Kojiro; null
Agent:
新居 広守 NII, Hiromori; 〒5320011 大阪府大阪市淀川区西中島5丁目3番10号タナカ・イトーピア新大阪ビル6階 新居国際特許事務所内 Osaka c/o NII Patent Firm 6F, Tanaka Ito Pia Shin-Osaka Bldg. 3-10, Nishi Nakajima 5-chome Yodogawa-ku, Osaka-city Osaka 5320011, JP
Priority Data:
2005-20775515.07.2005JP
2006-09702331.03.2006JP
Title (EN) SIGNAL PROCESSING DEVICE
(FR) DISPOSITIF DE TRAITEMENT DU SIGNAL
(JA) 信号処理装置
Abstract:
(EN) A signal processing device (1) includes: a generation unit (32) for generating a second signal from a first signal obtained by down-mixing two signals; a mixing coefficient decision unit (40) for deciding the mixing ratio for mixing the first signal and the second signal according to a value L representing the level ratio between the two signals and a value &thetas; representing a phase difference; and a mixing unit (50) for mixing the first signal and the second signal according to the mixing ratio decided by the mixing coefficient decision unit (40). The generation unit (32) includes a first filter (302) for generating a signal of a low-frequency band in the second signal from the signal of a low-frequency band in the first signal and second filter means (treating unit 307) for generating a signal of a high-frequency band in the second signal from the signal of a high-frequency band in the first signal. The first filter (302) is filter means for noncorrelating the input signal by a delay unit (301) and an all-pass filter for the signal of complex number and adding a reverberation component. The treating unit (307) is filter means different from the first filter (302).
(FR) Cette invention concerne un dispositif de traitement du signal (1) qui comporte : un générateur de signaux (32) qui génère un second signal à partir d'un premier signal issu du mixage pondéré de deux signaux, une unité de calcul du coefficient de pondération (40) de la combinaison du premier et du second signal en fonction du rapport des niveaux des deux signaux L et d'une différence de phase &thetas; et une unité de mixage (50) qui mixe le premier et le second signal en fonction du coefficient de pondération calculé par l'unité de calcul du coefficient de pondération (40). Le générateur de signaux (32) comporte un premier filtre (302) pour générer un signal basse fréquence dans le second signal issu du signal de basse fréquence dans le premier signal et un second filtre (unité de traitement 307) pour générer un signal haute fréquence dans le second signal issu du signal haute fréquence dans le premier signal. Le premier filtre (302) ne corrèle pas le signal d'entrée avec un temporisateur (301) et joue le rôle de filtre passe-tout pour le signal correspondant à un nombre complexe et ajoute un élément de réverbération. L'unité de traitement (307) est un filtre qui diffère du premier (302).
(JA)   信号処理装置(1)は、2つの信号をダウンミックスして得られた第1の信号から、第2の信号を生成する生成部(32)と、2つの信号間のレベル比を表す値Lと、位相差を表す値θとに基づいて、第1の信号と第2の信号とを混合するための混合の度合を決定する混合係数決定部(40)と、混合係数決定部(40)で決定された混合の度合に基づいて、第1の信号と第2の信号とを混合する混合部(50)とを備える。生成部(32)は、第1の信号における低い周波数帯域の信号から前記第2の信号における低い周波数帯域の信号を生成する第1のフィルタ(302)と、第1の信号における高い周波数帯域の信号から第2の信号における高い周波数帯域の信号を生成する第2のフィルタ手段(加工部307)とを有し、第1のフィルタ(302)は、複素数の信号に対して、遅延部(301)とオールパスフィルタとによって入力の信号を無相関化すると共に、残響成分を付加するフィルタ手段であり、加工部(307)は、第1のフィルタ(302)と異なるフィルタ手段である。 
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, HN, 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:
EP1906705US20090122182CN101223820JP4921365