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1. WO2020137082 - AUDIO PLAYBACK DEVICE

Publication Number WO/2020/137082
Publication Date 02.07.2020
International Application No. PCT/JP2019/039838
International Filing Date 09.10.2019
IPC
H04R 3/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
H03F 3/20 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
H03F 3/68 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
68Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
H04S 7/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS
7Indicating arrangements; Control arrangements, e.g. balance control
CPC
H03F 3/20
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
H03F 3/68
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
68Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
H04R 3/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers ; , loudspeakers or microphones
H04S 7/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
7Indicating arrangements; Control arrangements, e.g. balance control
Applicants
  • ソニーグループ株式会社 SONY GROUP CORPORATION [JP]/[JP]
Inventors
  • 齊城 晋作 SAIJO, Shinsaku
Agents
  • 杉浦 正知 SUGIURA, Masatomo
  • 杉浦 拓真 SUGIURA, Takuma
Priority Data
2018-24746728.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) AUDIO PLAYBACK DEVICE
(FR) DISPOSITIF DE LECTURE AUDIO
(JA) オーディオ再生装置
Abstract
(EN)
The present invention is an audio playback device comprising: a signal processing circuit that generates multichannel audio data; an attenuation control unit that is connected to the signal processing circuit, and controls the attenuation of audio data in each channel; and a speaker device that is driven by a multichannel audio signal from the attenuation control unit, and has a multichannel speaker including a woofer. The attenuation control unit is configured to: estimate, from the values of the audio data for each channel, the total current value of current flowing to the speaker device; control the attenuation so that the estimated total current value does not exceed a prescribed value set in advance; and control the attenuation according to a predetermined priority order so as to maintain a relationship between channels.
(FR)
La présente invention est un dispositif de lecture audio comprenant: un circuit de traitement de signal qui génère des données audio multicanal; une unité de commande d'atténuation qui est connectée au circuit de traitement du signal, et commande l'atténuation de données audio dans chaque canal; et un dispositif de haut-parleur qui est excité par un signal audio multicanal à partir de l'unité de commande d'atténuation, et un haut-parleur multicanal comprenant un haut-parleur de graves. L'unité de commande d'atténuation est configurée pour: estimer, à partir des valeurs des données audio pour chaque canal, la valeur de courant totale du courant circulant vers le dispositif de haut-parleur; commander l'atténuation de telle sorte que la valeur de courant total estimée ne dépasse pas une valeur prescrite définie à l'avance; et commander l'atténuation selon un ordre de priorité prédéterminé de façon à maintenir une relation entre les canaux.
(JA)
マルチチャンネルのオーディオデータを生成する信号処理回路と、信号処理回路に対して接続され、各チャンネルのオーディオデータの減衰量を制御する減衰量制御部と、減衰量制御部からのマルチチャンネルのオーディオ信号によって駆動され、ウーファーを含むマルチチャンネルのスピーカを有するスピーカ装置とを備え、減衰量制御部は、各チャンネルのオーディオデータの値からスピーカ装置に流れる合計電流値を推定し、推定された合計電流値が予め設定された所定値を超えないように減衰量を制御し、減衰量の制御を予め定めた優先順位にしたがって、且つチャンネル間の関係を維持させるように、行なうようにしたオーディオ再生装置である。
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