HRP20231164T1 - Poboljšana ekstenzija frekvencijskog opsega u dekoderu audiofrekvencijskih signala - Google Patents

Poboljšana ekstenzija frekvencijskog opsega u dekoderu audiofrekvencijskih signala Download PDF

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HRP20231164T1
HRP20231164T1 HRP20231164TT HRP20231164T HRP20231164T1 HR P20231164 T1 HRP20231164 T1 HR P20231164T1 HR P20231164T T HRP20231164T T HR P20231164TT HR P20231164 T HRP20231164 T HR P20231164T HR P20231164 T1 HRP20231164 T1 HR P20231164T1
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signal
spectrum
ambient
band
energy
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HRP20231164TT
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Magdalena KANIEWSKA
Stéphane RAGOT
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Koninklijke Philips N.V.
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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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K3/00—Apparatus for stamping articles having integral means for supporting the articles to be stamped
    • B41K3/54—Inking devices
    • B41K3/56—Inking devices using inking pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/02—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with one or more flat stamping surfaces having fixed images
    • B41K1/04—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with one or more flat stamping surfaces having fixed images with multiple stamping surfaces; with stamping surfaces replaceable as a whole
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/08—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with a flat stamping surface and changeable characters
    • B41K1/10—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with a flat stamping surface and changeable characters having movable type-carrying bands or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/08—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with a flat stamping surface and changeable characters
    • B41K1/12—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with a flat stamping surface and changeable characters having adjustable type-carrying wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/36—Details
    • B41K1/38—Inking devices; Stamping surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/36—Details
    • B41K1/38—Inking devices; Stamping surfaces
    • B41K1/40—Inking devices operated by stamping movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/36—Details
    • B41K1/38—Inking devices; Stamping surfaces
    • B41K1/40—Inking devices operated by stamping movement
    • B41K1/42—Inking devices operated by stamping movement with pads or rollers movable for inking
    • 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
    • G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • 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
    • G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 using spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/21—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being power information
    • 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
    • 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
    • G10L19/04—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 using predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Claims (9)

1. Postupak za ekstenziju frekvencijskog opsega audiofrekvencijskog signala tijekom procesa dekodiranja ili poboljšanja koji obuhvaća etapu dobivanja dekodiranog signala u prvom frekvencijskom opsegu koji se naziva niski opseg, pri čemu je postupak naznačen time što uključuje slijedeće etape: - Ekstenziju (E401a) preko najmanje drugog frekvencijskog opsega višeg od prvog frekvencijskog opsega dekodiranog signala niskog opsega da bi se formirao prošireni dekodirani signal niskog opsega UHB1(k), pri čemu k predstavlja uzorke koji pokrivaju spektar UHB1(k) ; - Ekstrakciju (E402) tonskih komponenti i jednog ambijentalnog signala iz signala koji dolazi iz proširenog dekodiranog signala niskog opsega; - Kombinaciju (E403) tonskih komponenti i ambijentalnog signala adaptivnim mješanjem koristeći faktore kontrole nivoa energije za dobivanje kombiniranog signala; - sintezu (E404b) audio signala za vraćanje signala iz kombiniranog signala u vremensku domenu; i pri čemu etapa ekstrakcije (E402) tonskih komponenti i ambijentalnog signala obuhvaća slijedeće operacije: (a) izračunavanje ukupne energije proširenog dekodiranog signala niskog opsega; (b) proračun ambijenta u apsolutnoj vrijednosti koja odgovara prosječnom nivou spektra linija po linija i proračun energije dominantnih tonskih dijelova u spektru visokih frekvencija.
2. Postupak prema patentnom zahtjevu 1, prema kojem etapa (a) izračunavanja ukupne energije proširenog dekodiranog signala niskog opsega obuhvaća izračunavanje: [image] gdje ε=0.1.
3. Postupak prema patentnom zahtjevu 1 ili 2, pri čemu se prosječni nivo spektra linija po linija dobiva pomoću jednadžbe: [image] gdje fb(i) = 0 i fn(i)= i+7 za i=0,...,6 fb(i)= i-7 i fn(i)= i+7 za i=7,...,L-8 fb(i)= i-7 i fn(i)= L-1 za i=L-7,. ,L-1, gdje L je dužina spektra.
4. Postupak prema patentnom zahtjevu 1, 2 ili 3, pri čemu proračun energije dominantnih tonskih komponenti obuhvaća izračunavanje zaostalog signala: [image]
5. Postupak prema patentnom zahtjevu 4, koji obuhvaća etapu detekcije tonskih komponenti na osnovu uvjeta detekcije na zaostalom signalu y(i).
6. Postupak prema patentnom zahtjevu 5, pri čemu je uvjet detekcije y(i)>0.
7. Postupak prema patentnom zahtjevu 6, pri čemu se energija dominantnih tonskih komponenti definira pomoću [image]
8. Uređaj za ekstenziju frekvencijskog opsega audiofrekvencijskog signala, gdje je signal dekodiran u prvom frekvencijskom opsegu koji se naziva niski opseg, pri čemu je uređaj naznačen time što obuhvaća: - jedan modul (511) ekstenzije na najmanje drugom frekvencijskom opsegu višem od prvog frekvencijskog opsega uvedenog u dekodirani signal niskog opsega da se formira prošireni dekodirani signal niskog opsega UHB1(k), pri čemu k predstavlja uzorke koji pokrivaju spektar UHB1(k), - jedan modul (512) ekstrakcije tonskih komponenti i ambijentalnog signala iz signala koji dolazi iz proširenog dekodiranog signala niskog opsega; - jedan modul (513) kombiniranih tonskih komponenti i ambijentalnog signala adaptivnim mješanjem korištenjem faktora kontrole nivoa energije za dobivanje kombiniranog audiosignala; - modul (502) sinteze jednog audio signala za vraćanje kombiniranog signala u vremensku domenu; i u kojem je modul ekstrakcije (512) tonskih komponenti i ambijentalnog signala prilagođen za obavljanje slijedećih operacija: (a) izračunavanje ukupne energije proširenog dekodiranog signala niskog opsega; (b) proračun ambijenta u apsolutnoj vrijednosti koja odgovara prosječnom nivou spektra linija po linija i proračun energije dominantnih tonskih dijelova u spektru visokih frekvencija.
9. Dekoder audiofrekvencijskog signala, naznačen time što obuhvaća uređaj za ekstenziju frekvencijskog opsega prema patentnom zahtjevu 8.
HRP20231164TT 2014-02-07 2015-02-04 Poboljšana ekstenzija frekvencijskog opsega u dekoderu audiofrekvencijskih signala HRP20231164T1 (hr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1450969A FR3017484A1 (fr) 2014-02-07 2014-02-07 Extension amelioree de bande de frequence dans un decodeur de signaux audiofrequences
EP17206563.3A EP3330966B1 (fr) 2014-02-07 2015-02-04 Extension améliorée de bande de fréquence dans un décodeur de signaux audiofréquences

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HRP20211187TT HRP20211187T1 (hr) 2014-02-07 2021-07-23 Poboljšana ekstenzija frekvencijskog opsega u dekoderu audio frekventnih signala

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EP (4) EP3330966B1 (hr)
JP (4) JP6625544B2 (hr)
KR (5) KR102380487B1 (hr)
CN (4) CN108022599B (hr)
BR (2) BR122017027991B1 (hr)
DK (2) DK3103116T3 (hr)
ES (2) ES2878401T3 (hr)
FI (1) FI3330966T3 (hr)
FR (1) FR3017484A1 (hr)
HR (2) HRP20231164T1 (hr)
HU (2) HUE062979T2 (hr)
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PL (4) PL3330967T3 (hr)
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