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公开(公告)号：US20250031006A1
公开(公告)日：2025-01-23
申请号：US18906872
申请日：2024-10-04
Inventor： Kota NAKAHASHI , Seigo ENOMOTO , Hikaru USAMI , Mariko YAMADA , Hiroyuki EHARA , Ko MIZUNO , Tomokazu ISHIKAWA
IPC: H04S7/00
Abstract: In an acoustic processing method, (i) sound information related to a sound including a predetermined sound and (ii) metadata including information related to a space in which the predetermined sound is reproduced are obtained; based on the sound information and the metadata, sound image localization enhancement processing of generating a first sound signal expressing a sound including a sound image localization enhancement reflected sound for localization as a sound arriving from a predetermined direction is performed; based on the sound information and the metadata, acoustic processing of generating a second sound signal expressing a sound including a sound other than a direct sound that reaches a user directly from a sound source object is performed; and an output sound signal obtained by compositing the first sound signal and the second sound signal is output.
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2.发明申请公开(公告)号：US20250031008A1
公开(公告)日：2025-01-23
申请号：US18905345
申请日：2024-10-03
Inventor： Hikaru USAMI , Tomokazu ISHIKAWA , Seigo ENOMOTO , Mariko YAMADA , Kota NAKAHASHI
IPC: H04S7/00
Abstract: An acoustic signal processing device includes: an obtainer that obtains location information indicating a location of an object in a virtual space, and first shape information indicating a shape of the object and used for generating a video of the object in the virtual space; a detector that detects a moving speed of the object in the virtual space, based on the location information obtained; a generator that generates a first acoustic signal indicating an aerodynamic sound generated by the object, based on the moving speed detected and the first shape information obtained; and an outputter that outputs the first acoustic signal generated.
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公开(公告)号：US20250031007A1
公开(公告)日：2025-01-23
申请号：US18908060
申请日：2024-10-07
Inventor： Kota NAKAHASHI , Seigo ENOMOTO , Hikaru USAMI , Mariko YAMADA , Hiroyuki EHARA , Ko MIZUNO , Tomokazu ISHIKAWA
IPC: H04S7/00
Abstract: An acoustic processing method includes: obtaining (i) sound information related to a sound including a predetermined sound and (ii) metadata including information related to a space in which the predetermined sound is reproduced; performing, based on the sound information and the metadata, acoustic processing of generating a sound signal expressing a sound including an early reflection that reaches a user after a direct sound that reaches the user directly from a sound source object; and outputting an output sound signal including the sound signal. The acoustic processing includes: determining parameters for generating the early reflection, the parameters including a position, in the space, of a virtual sound source object that generates the early reflection; and generating the early reflection based on the parameters determined. The parameters include at least a parameter that varies over time according to a predetermined condition.
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公开(公告)号：US20240323636A1
公开(公告)日：2024-09-26
申请号：US18676834
申请日：2024-05-29
Inventor： Seigo ENOMOTO , Kota NAKAHASHI , Tomokazu ISHIKAWA
IPC: H04S7/00
CPC classification number: H04S7/304 , H04S7/306 , H04S2420/01
Abstract: A sound processing device includes: a first processing unit generating a first output sound signal by convoluting, to sound information including a reproduced sound, a first head-related transfer function for localizing sound included in information as sound that arrives from the predetermined direction; a second processing unit generating a second output sound signal by convoluting, to the sound information, a second head-related transfer function for localizing sound included in information as sound that arrives from a first direction forming a first angle larger than 0° and smaller than 360° with respect to the predetermined direction and has a first delay time larger than 0 and a first volume attenuation larger than 0 with respect to the reproduced sound perceived by means of the first output sound signal; and a combiner combining the first output sound signal and the second output sound signal generated to output an output sound signal.
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公开(公告)号：US20250031001A1
公开(公告)日：2025-01-23
申请号：US18906434
申请日：2024-10-04
Inventor： Hikaru USAMI , Tomokazu ISHIKAWA , Seigo ENOMOTO , Mariko YAMADA , Kota NAKAHASHI
IPC: H04S7/00
Abstract: An acoustic reproduction method includes: obtaining a sound signal indicating a sound that reaches a listener in a sound reproduction space and processing information indicating whether to perform, on the sound signal, reduction processing for reducing noise included in the sound; determining processing content of the reduction processing when the processing information obtained indicates that the reduction processing is to be performed; performing the reduction processing, based on the processing content determined; and outputting the sound signal on which the reduction processing has been performed.
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Patent Agency Ranking
公开(公告)号：US20240031763A1
公开(公告)日：2024-01-25
申请号：US18374221
申请日：2023-09-28
Inventor： Seigo ENOMOTO , Ko MIZUNO , Tomokazu ISHIKAWA
IPC: H04S7/00
CPC classification number: H04S7/304 , H04S2400/15 , H04S2420/01
Abstract: An acoustic reproduction method includes: obtaining information indicating sounds that reach a listener in a sound reproduction space and direction information indicating a direction in which the head of the listener is oriented; judging whether a first direction in which a first sound reaches the listener and a second direction in which a second sound reaches the listener are in plane symmetry with respect to a predetermined plane that passes through both ears of the listener and is perpendicular to the direction in which the head of the listener is oriented, the first and the second sounds being included in the sounds indicated in the information obtained; performing processing on sound information indicating the second sound when the first and the second directions are judged to be in plane symmetry, the processing being change processing of changing the second direction; and outputting the sound information subjected to the change processing.
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公开(公告)号：US20230179938A1
公开(公告)日：2023-06-08
申请号：US18104908
申请日：2023-02-02
Inventor： Ko MIZUNO , Seigo ENOMOTO , Tomokazu ISHIKAWA
IPC: H04S7/00
CPC classification number: H04S7/30
Abstract: An information processing method includes: calculating an angular amount of change in a predetermined direction in a time domain from sound information including information regarding a predetermined sound and information regarding the predetermined direction; selecting, based on the information regarding the predetermined direction, a 3D sound filter for causing an inputted sound to be perceived as a sound coming from an incoming direction from among 3D sound filter candidates each prepared for a different incoming direction; and generating an output sound signal by inputting the information regarding the predetermined sound to the 3D sound filter selected, in which, when the angular amount of change calculated is less than a threshold, the selecting a 3D sound filter includes determining the 3D sound filter such that the predetermined sound is more strongly emphasized than when the angular amount of change calculated is greater than or equal to the threshold.
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公开(公告)号：US20220417696A1
公开(公告)日：2022-12-29
申请号：US17903301
申请日：2022-09-06
Inventor： Hikaru USAMI , Tomokazu ISHIKAWA , Seigo ENOMOTO
Abstract: A sound reproduction method includes: obtaining a first audio signal indicating a first sound which arrives at a listener from a first range and a second audio signal indicating a second sound which arrives at the listener from a predetermined direction; when the first range and the predetermined direction are determined to be included in a second range which is a back range relative to a front range in the direction that the head part of the listener faces, performing a correction process on at least one of the first audio signal or the second audio signal so that intensity of the second audio signal becomes higher than intensity of the first audio signal; and performing mixing of the at least one of the first audio signal or the second audio signal, and outputting, to an output channel, the first and second audio signals.
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公开(公告)号：US20250031005A1
公开(公告)日：2025-01-23
申请号：US18904376
申请日：2024-10-02
Inventor： Seigo ENOMOTO , Hikaru USAMI , Kota NAKAHASHI , Hiroyuki EHARA , Mariko YAMADA , Ko MIZUNO , Tomokazu ISHIKAWA
IPC: H04S7/00
Abstract: An information processing method includes: obtaining a position of a user within the three-dimensional sound field; determining a virtual boundary that includes two or more lattice points surrounding the user, based on the position of the user which has been obtained, the two or more lattice points being among a plurality of lattice points set at predetermined intervals within the three-dimensional sound reading field; the propagation characteristics of the sound from the sound source to the two or more lattice points included in the virtual boundary determined; calculating transfer functions of the sound from the two or more lattice points included in the virtual boundary determined to the position of the user; and generating the output sound signal by processing the sound information using the propagation characteristics read and the transfer functions calculated.
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公开(公告)号：US20250028500A1
公开(公告)日：2025-01-23
申请号：US18903559
申请日：2024-10-01
Inventor： Seigo ENOMOTO , Hikaru USAMI , Kota NAKAHASHI , Hiroyuki EHARA , Mariko YAMADA , Tomokazu ISHIKAWA , Ko MIZUNO
Abstract: A sound signal processing method includes: obtaining a sound signal; determining, for each of a plurality of sound processes executed in a pipeline, whether to execute the sound process on the sound signal, based on priority information indicating a priority associated with the sound signal; and executing each sound process determined to be executed in the determining, on the sound signal.
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