RU2018118336A - Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка - Google Patents
Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка Download PDFInfo
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- RU2018118336A RU2018118336A RU2018118336A RU2018118336A RU2018118336A RU 2018118336 A RU2018118336 A RU 2018118336A RU 2018118336 A RU2018118336 A RU 2018118336A RU 2018118336 A RU2018118336 A RU 2018118336A RU 2018118336 A RU2018118336 A RU 2018118336A
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- Prior art keywords
- hoa
- gain
- matrix
- dsht
- drc
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- 238000000034 method Methods 0.000 title claims 8
- 230000006835 compression Effects 0.000 title claims 6
- 238000007906 compression Methods 0.000 title claims 6
- 239000011159 matrix material Substances 0.000 claims 15
- 230000005236 sound signal Effects 0.000 claims 10
- 239000012634 fragment Substances 0.000 claims 6
- 230000009466 transformation Effects 0.000 claims 2
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
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- 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]
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- 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
- H04S2420/11—Application of ambisonics in stereophonic audio systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mathematical Physics (AREA)
- Computational Linguistics (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Algebra (AREA)
- Theoretical Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- General Physics & Mathematics (AREA)
- Stereophonic System (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Nuclear Medicine (AREA)
- Image Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Claims (29)
1. Способ сжатия динамического диапазона (DRC), содержащий этапы, на которых:
применяют DRC в области гребенки фильтров квадратурного зеркального фильтра(QMF);
применяют коэффициент усиления и матрицу дискретного преобразования сферических гармоник (DSHT) к представлению аудиосигнала на основе HOA;
причем значение усиления применяют на основе
2. Способ по п.1, в котором представление аудиосигнала на основе HOA разделяют на подполосы частот, и коэффициент усиления применяются к каждой подполосе частот отдельно.
4. Устройство для сжатия динамического диапазона(DRC), содержащее:
аудио декодер выполненный с возможностью применения DRC в области гребенки фильтров квадратурного зеркального фильтра(QMF) посредством применения коэффициента усиления и матрицы дискретного преобразования сферических гармоник (DSHT) к представлению аудиосигнала на основе HOA;
причем значение усиления применяют на основе
5. Устройство по п.4, в котором представление аудиосигнала на основе HOA разделяют на подполосы частот, и коэффициент усиления применяются к каждой подполосе частот отдельно.
7. Машиночитаемый носитель информации, содержащий исполняемые компьютером команды, которые при исполнении компьютером предписывают компьютеру осуществлять способ сжатия динамического диапазона (DRC), содержащий этапы, на которых:
применяют DRC в области гребенки фильтров квадратурного зеркального фильтра(QMF);
применяют коэффициент усиления и матрицу дискретного преобразования сферических гармоник (DSHT) к представление аудиосигнала на основе HOA;
причем значение усиления применяют на основе
8. Машиночитаемый носитель по п.7, в котором представление аудиосигнала на основе HOA разделяют на подполосы частот, и коэффициент усиления применяются к каждой подполосе частот отдельно.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14305423.7 | 2014-03-24 | ||
EP14305423 | 2014-03-24 | ||
EP14305559.8A EP2934025A1 (en) | 2014-04-15 | 2014-04-15 | Method and device for applying dynamic range compression to a higher order ambisonics signal |
EP14305559.8 | 2014-04-15 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2016141386A Division RU2658888C2 (ru) | 2014-03-24 | 2015-03-24 | Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка |
Related Child Applications (1)
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---|---|---|---|
RU2021130656A Division RU2021130656A (ru) | 2014-03-24 | 2021-10-21 | Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка |
Publications (3)
Publication Number | Publication Date |
---|---|
RU2018118336A true RU2018118336A (ru) | 2018-11-01 |
RU2018118336A3 RU2018118336A3 (ru) | 2021-09-13 |
RU2760232C2 RU2760232C2 (ru) | 2021-11-23 |
Family
ID=52727138
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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RU2016141386A RU2658888C2 (ru) | 2014-03-24 | 2015-03-24 | Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка |
RU2018118336A RU2760232C2 (ru) | 2014-03-24 | 2015-03-24 | Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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RU2016141386A RU2658888C2 (ru) | 2014-03-24 | 2015-03-24 | Способ и устройство для применения сжатия динамического диапазона к сигналу амбиофонии высшего порядка |
Country Status (13)
Country | Link |
---|---|
US (7) | US9936321B2 (ru) |
EP (3) | EP3451706B1 (ru) |
JP (6) | JP6246948B2 (ru) |
KR (5) | KR20230156153A (ru) |
CN (8) | CN109036441B (ru) |
AU (5) | AU2015238448B2 (ru) |
BR (5) | BR122020020719B1 (ru) |
CA (3) | CA3153913C (ru) |
HK (2) | HK1258770A1 (ru) |
RU (2) | RU2658888C2 (ru) |
TW (7) | TWI760084B (ru) |
UA (1) | UA119765C2 (ru) |
WO (1) | WO2015144674A1 (ru) |
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US10999693B2 (en) * | 2018-06-25 | 2021-05-04 | Qualcomm Incorporated | Rendering different portions of audio data using different renderers |
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