WO2019065215A1 - 処理装置、処理方法、及びプログラム - Google Patents

処理装置、処理方法、及びプログラム Download PDF

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Publication number
WO2019065215A1
WO2019065215A1 PCT/JP2018/033622 JP2018033622W WO2019065215A1 WO 2019065215 A1 WO2019065215 A1 WO 2019065215A1 JP 2018033622 W JP2018033622 W JP 2018033622W WO 2019065215 A1 WO2019065215 A1 WO 2019065215A1
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WO
WIPO (PCT)
Prior art keywords
characteristic
value
division
smoothing
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/033622
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English (en)
French (fr)
Japanese (ja)
Inventor
邦明 高地
村田　寿子
優美 藤井
敬洋 下条
正也 小西
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JVCKenwood Corp
Original Assignee
JVCKenwood Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JVCKenwood Corp filed Critical JVCKenwood Corp
Publication of WO2019065215A1 publication Critical patent/WO2019065215A1/ja
Priority to US16/817,257 priority Critical patent/US11044571B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/307—Frequency adjustment, e.g. tone control
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/04—Circuits for transducers for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/07—Synergistic effects of band splitting and sub-band processing

Definitions

  • This embodiment is made in view of the above-mentioned point, and aims at providing a processing device, a processing method, and a program which can set up a zone division point appropriately.
  • a set of four space acoustic transfer characteristics Hls, Hlo, Hro, and Hrs as one set is a space acoustic transfer function.
  • the data used for convolution in the convolution units 11, 12, 21 and 22 is a spatial acoustic filter.
  • a spatial acoustic filter is generated by cutting out spatial acoustic transfer characteristics Hls, Hlo, Hro, and Hrs with a predetermined filter length.
  • the division point determination unit 214 sets a candidate point with the smallest amplitude value of the smoothing characteristic as a band division point.
  • the frequency f3 is the band division point.
  • the second example is applied when the number of division points is 1, that is, when the number of bands to be divided is two. Therefore, the band of the lowest frequency to the frequency f3 is the first band, and the frequency f3 to the highest frequency is the second band.
  • the smaller the characteristic value of the minimum value the smaller the evaluation value.
  • the evaluation value decreases as the characteristic value of the maximum value increases. Then, the smaller the evaluation value, the higher the division point.
  • (A3) / (A4) is smaller than (A5) / (A6)
  • (A5) / (A6) is smaller than (A1) / (A2).
  • the candidate point of frequency f3 and the candidate point of frequency f5 become band division points.
  • the band from the lowest frequency to the frequency f3 is the first band
  • the band from the frequency f3 to the frequency f5 is the second band
  • the band from the frequency f5 to the highest frequency is the third band.
  • the maximum signal level of the band component is determined for each of the first to third bands.
  • the maximum signal level is the maximum amplitude value in each band.
  • the parameter setting unit 223 determines a band in which the level difference between the maximum signal level and the threshold is maximum.
  • the parameter setting unit 223 selects the parameter of the band where the level difference is the largest. For example, if the level difference in the second band is larger than the level difference in the first band and the third band, the parameter setting unit 223 calculates a parameter from the characteristics of the second band.
  • the parameter setting unit 223 sets parameters from the maximum signal level and the like in the second band.
  • the candidate point determination unit 213 increments k and repeats loop processing (S120). If value [k] is not smaller than 0, the extremum is not a candidate point because it is a local maximum. Then, loop processing of k is performed until k reaches the number (n) of extreme values. That is, the processing of S116 to S120 is performed on all the extreme values. Thereby, all local minimum values are extracted as candidate points.
  • the number of candidate points is l.
  • the present disclosure is applicable to audio signal processing techniques.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
PCT/JP2018/033622 2017-09-27 2018-09-11 処理装置、処理方法、及びプログラム Ceased WO2019065215A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/817,257 US11044571B2 (en) 2017-09-27 2020-03-12 Processing device, processing method, and program

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-186164 2017-09-27
JP2017186164A JP6950405B2 (ja) 2017-09-27 2017-09-27 処理装置、処理方法、及びプログラム

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/817,257 Continuation US11044571B2 (en) 2017-09-27 2020-03-12 Processing device, processing method, and program

Publications (1)

Publication Number Publication Date
WO2019065215A1 true WO2019065215A1 (ja) 2019-04-04

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PCT/JP2018/033622 Ceased WO2019065215A1 (ja) 2017-09-27 2018-09-11 処理装置、処理方法、及びプログラム

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US (1) US11044571B2 (https=)
JP (1) JP6950405B2 (https=)
WO (1) WO2019065215A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7435334B2 (ja) * 2020-07-20 2024-02-21 株式会社Ｊｖｃケンウッド 頭外定位フィルタ決定システム、頭外定位フィルタ決定方法、及びプログラム
CN115938376A (zh) 2021-08-06 2023-04-07 Jvc建伍株式会社 处理装置和处理方法
JP7639607B2 (ja) * 2021-08-06 2025-03-05 株式会社Ｊｖｃケンウッド 処理装置、及び処理方法
US12192742B2 (en) 2021-09-27 2025-01-07 Jvckenwood Corporation Filter generation device and filter generation method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011035573A (ja) * 2009-07-31 2011-02-17 Victor Co Of Japan Ltd 音信号処理装置および音信号処理方法
JP2017028526A (ja) * 2015-07-23 2017-02-02 株式会社Ｊｖｃケンウッド 頭外定位処理装置、頭外定位処理方法、プログラム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8619998B2 (en) * 2006-08-07 2013-12-31 Creative Technology Ltd Spatial audio enhancement processing method and apparatus
JP5621519B2 (ja) 2010-11-05 2014-11-12 ヤマハ株式会社 音響処理装置
WO2018062406A1 (ja) 2016-09-28 2018-04-05 ヤマハ株式会社 フィルタの周波数レスポンス設定方法および設定装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011035573A (ja) * 2009-07-31 2011-02-17 Victor Co Of Japan Ltd 音信号処理装置および音信号処理方法
JP2017028526A (ja) * 2015-07-23 2017-02-02 株式会社Ｊｖｃケンウッド 頭外定位処理装置、頭外定位処理方法、プログラム

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JP6950405B2 (ja) 2021-10-13
US11044571B2 (en) 2021-06-22
JP2019062430A (ja) 2019-04-18
US20200213802A1 (en) 2020-07-02

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