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公开(公告)号：US12142251B2
公开(公告)日：2024-11-12
申请号：US18439478
申请日：2024-02-12
Applicant: DOLBY INTERNATIONAL AB
Inventor： Per Ekstrand , Lars Villemoes , Per Hedelin
IPC: G10L21/038 , G10H1/00 , G10H1/12 , G10L19/26 , G10L21/0388
Abstract: The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of Δf. The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P; wherein the set of synthesis subband signals comprises a portion of the set of analysis subband signals phase shifted by an amount derived from the transposition order P; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; wherein the synthesis filter bank (504) has a frequency resolution of FΔf; with F being a resolution factor, with F≥1; wherein the transposition order P is different from the resolution factor F.
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公开(公告)号：US20230386440A1
公开(公告)日：2023-11-30
申请号：US18447051
申请日：2023-08-09
Applicant: Yamaha Corporation
Inventor： Keijiro SAINO , Ryunosuke DAIDO , Bonada JORDI , Blaauw MERLIJN
CPC classification number: G10H1/12 , G10H3/125 , G10H2210/031 , G10H2250/311 , G10H2250/551
Abstract: A sound generation method that is realized by a computer includes receiving a first feature amount sequence in which a musical feature amount changes over time, and using a trained model that has learned an input-output relationship between an input feature amount sequence in which the musical feature amount changes over time at a first fineness and a reference sound data sequence corresponding to an output feature amount sequence in which the musical feature amount changes over time at a second fineness that is higher than the first fineness, to process the first feature amount sequence, thereby generating a sound data sequence corresponding to a second feature amount sequence in which the musical feature amount changes at the second fineness.
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公开(公告)号：US20230245637A1
公开(公告)日：2023-08-03
申请号：US18194414
申请日：2023-03-31
Applicant: DOLBY INTERNATIONAL AB
Inventor： Per EKSTRAND , Lars VILLEMOES , Per HEDELIN
IPC: G10H1/00 , G10L21/038 , G10L19/26 , G10H1/12
CPC classification number: G10H1/0091 , G10L21/038 , G10L19/265 , G10H1/125 , G10L21/0388
Abstract: The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of Δf. The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P; wherein the set of synthesis subband signals comprises a portion of the set of analysis subband signals phase shifted by an amount derived from the transposition order P; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; wherein the synthesis filter bank (504) has a frequency resolution of FΔf; with F being a resolution factor, with F≥1; wherein the transposition order P is different from the resolution factor F.
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公开(公告)号：US11657788B2
公开(公告)日：2023-05-23
申请号：US17549661
申请日：2021-12-13
Applicant: Dolby International AB
Inventor： Per Ekstrand , Lars Villemoes , Per Hedelin
IPC: G10L21/038 , G10H1/00 , G10L19/26 , G10H1/12 , G10L21/0388
CPC classification number: G10H1/0091 , G10H1/125 , G10L19/265 , G10L21/038 , G10H2210/311 , G10L21/0388
Abstract: The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of Δf. The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P; wherein the set of synthesis subband signals comprises a portion of the set of analysis subband signals phase shifted by an amount derived from the transposition order P; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; wherein the synthesis filter bank (504) has a frequency resolution of FΔf; with F being a resolution factor, with F≥1; wherein the transposition order P is different from the resolution factor F.
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公开(公告)号：US10354631B2
公开(公告)日：2019-07-16
申请号：US15928558
申请日：2018-03-22
Applicant: YAMAHA CORPORATION
Inventor： Ryunosuke Daido , Hiraku Kayama , Sumiya Ishikawa
IPC: G10H1/36 , G10L21/00 , H04R3/00 , G10L21/007 , G10H1/00 , G10L21/003 , G10H1/12 , H03G9/02 , H03G9/00
Abstract: A method for processing an input sound signal of singing voice, to obtain a sound signal with an impression different from the input sound signal, includes: selecting a genre from among a plurality of tune genres in accordance with a selection operation by a user, setting, to a first unit, a set of first parameters corresponding to the selected genre, displaying a first impression identifier corresponding to the selected genre for a first control of a first user parameter in the set of first parameters, changing the first user parameter in accordance with a change operation on the first control by the user, and strengthening, by the first unit, signal components within a particular frequency band of the sound signal, in accordance with the set of first parameters including the first user parameters.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10109268B2
公开(公告)日：2018-10-23
申请号：US15845805
申请日：2017-12-18
Applicant: CASIO COMPUTER CO., LTD.
Inventor： Goro Sakata
Abstract: A musical note generation device includes at least one processor that performs a process of generating attenuated sound waveform data by respectively reducing, among frequency components included in first sound waveform data corresponding to pitch information associated with a specified key, amplitudes of respective frequency components of a fundamental tone and harmonics of the fundamental tone corresponding to a pitch indicated by the pitch information; a process that convolves the generated attenuated sound waveform data generated with second sound waveform data corresponding to at least one of a high sound range side impulse response and a low sound range side impulse response, so as to generate third sound waveform data; and a process of outputting piano sound waveform data generated on the basis of the third sound waveform data generated by the convolution process.
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公开(公告)号：US20180114514A1
公开(公告)日：2018-04-26
申请号：US15849915
申请日：2017-12-21
Applicant: Dolby International AB
Inventor： Per Ekstrand , Lars Villemoes , Per Hedelin
CPC classification number: G10H1/0091 , G10H1/125 , G10H2210/311 , G10L19/265 , G10L21/038 , G10L21/0388
Abstract: The present document relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), and to digital effect processors, e.g. so-called exciters, where generation of harmonic distortion adds brightness to the processed signal. In particular, a system configured to generate a high frequency component of a signal from a low frequency component of the signal is described. The system may comprise an analysis filter bank (501) configured to provide a set of analysis subband signals from the low frequency component of the signal; wherein the set of analysis subband signals comprises at least two analysis subband signals; wherein the analysis filter bank (501) has a frequency resolution of Δf. The system further comprises a nonlinear processing unit (502) configured to determine a set of synthesis subband signals from the set of analysis subband signals using a transposition order P; wherein the set of synthesis subband signals comprises a portion of the set of analysis subband signals phase shifted by an amount derived from the transposition order P; and a synthesis filter bank (504) configured to generate the high frequency component of the signal from the set of synthesis subband signals; wherein the synthesis filter bank (504) has a frequency resolution of FΔf; with F being a resolution factor, with F≥1; wherein the transposition order P is different from the resolution factor F.
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公开(公告)号：US20170301330A1
公开(公告)日：2017-10-19
申请号：US15583933
申请日：2017-05-01
Applicant: DTS, Inc.
Inventor： Zoran Fejzo , Fred Maher
CPC classification number: G10H1/46 , G10H1/125 , G10H2210/125 , G10H2210/295 , G10H2210/301 , G10H2250/055 , H04S3/00 , H04S3/008 , H04S7/303 , H04S2400/07 , H04S2400/15 , H04S2420/03
Abstract: There are disclosed automatic mixers and methods for creating a surround audio mix. A set of rules may be stored in a rule base. A rule engine may select a subset of the set of rules based, at least in part, on metadata associated with a plurality of stems. A mixing matrix may mix the plurality of stems in accordance with the selected subset of rules to provide three or more output channels.
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公开(公告)号：US09640163B2
公开(公告)日：2017-05-02
申请号：US14206868
申请日：2014-03-12
Applicant: DTS, Inc.
Inventor： Zoran Fejzo , Fred Maher
CPC classification number: G10H1/46 , G10H1/125 , G10H2210/125 , G10H2210/295 , G10H2210/301 , G10H2250/055 , H04S3/00 , H04S3/008 , H04S2400/07 , H04S2400/15 , H04S2420/03
Abstract: There are disclosed automatic mixers and methods for creating a surround audio mix. A set of rules may be stored in a rule base. A rule engine may select a subset of the set of rules based, at least in part, on metadata associated with a plurality of stems. A mixing matrix may mix the plurality of stems in accordance with the selected subset of rules to provide three or more output channels.
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公开(公告)号：US09595249B2
公开(公告)日：2017-03-14
申请号：US14974749
申请日：2015-12-18
Applicant: Jeffrey Arnold
Inventor： Jeffrey Arnold
CPC classification number: G10H3/187 , G10H1/12 , G10H2210/311 , G10H2220/265 , H03F3/181 , H03F3/68 , H03F2200/03 , H03G3/10 , H03G5/025 , H03G7/001
Abstract: An electronic signal processor for processing signals includes a complex first filter, one or more gain stages and a second filter. The first filter is characterized by a frequency response curve that includes multiple corner frequencies, with some corner frequencies being user selectable. The first filter also has at least two user-preset gain levels which may be alternately selected by a switch. Lower frequency signals are processed by the first filter with at least 12 db/octave slope, and preferably with 18 db/octave slope to minimize intermodulation distortion products by subsequent amplification in the gain stages. A second filter provides further filtering and amplitude control. The signal processor is particularly suited for processing audio frequency signals.
Abstract translation: 用于处理信号的电子信号处理器包括复数第一滤波器，一个或多个增益级和第二滤波器。 第一个滤波器的特征在于频率响应曲线，其包括多个拐角频率，一些拐角频率是用户可选择的。 第一个滤波器还具有至少两个可由开关交替选择的用户预设增益电平。 较低频率信号由第一滤波器以至少12db /倍频程斜率处理，并且优选地具有18db /倍频程斜率，以通过在增益级中的后续放大来最小化互调失真产物。 第二个滤波器提供进一步的滤波和幅度控制。 信号处理器特别适用于处理音频信号。
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