CA2918807C - Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency - Google Patents

Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency Download PDF

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Publication number
CA2918807C
CA2918807C CA2918807A CA2918807A CA2918807C CA 2918807 C CA2918807 C CA 2918807C CA 2918807 A CA2918807 A CA 2918807A CA 2918807 A CA2918807 A CA 2918807A CA 2918807 C CA2918807 C CA 2918807C
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frequency
spectral
signal
cross
tile
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French (fr)
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CA2918807A1 (en
Inventor
Sascha Disch
Ralf Geiger
Christian Helmrich
Frederik Nagel
Christian Neukam
Konstantin Schmidt
Michael Fischer
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Speech 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
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • G10L21/0388Details of processing therefor
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • GPHYSICS
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    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • G10L19/0204Speech 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
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    • G10L19/02Speech 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
    • G10L19/0204Speech 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
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    • G10L19/0212Speech 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
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    • G10L19/022Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025Detection of transients or attacks for time/frequency resolution switching
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    • G10L19/032Quantisation or dequantisation of spectral components
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    • G10L19/04Speech 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
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    • G10L19/04Speech 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
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    • G10L25/06Speech 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 correlation coefficients
    • GPHYSICS
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    • G10L25/03Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18Speech 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 spectral information of each sub-band
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    • G10L25/21Speech 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
    • HELECTRICITY
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    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
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    • H04ELECTRIC COMMUNICATION TECHNIQUE
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    • H04S1/00Two-channel systems
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    • GPHYSICS
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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
CA2918807A 2013-07-22 2014-07-15 Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency Active CA2918807C (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
EP13177346 2013-07-22
EP13177353 2013-07-22
EP13177346.7 2013-07-22
EP13177348.3 2013-07-22
EP13177353.3 2013-07-22
EP13177350 2013-07-22
EP13177348 2013-07-22
EP13177350.9 2013-07-22
EP13189389.3 2013-10-18
EP13189389.3A EP2830065A1 (en) 2013-07-22 2013-10-18 Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency
PCT/EP2014/065112 WO2015010950A1 (en) 2013-07-22 2014-07-15 Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency

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CA2918807A1 CA2918807A1 (en) 2015-01-29
CA2918807C true CA2918807C (en) 2019-05-07

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CA2918524A Active CA2918524C (en) 2013-07-22 2014-07-15 Apparatus and method for decoding and encoding an audio signal using adaptive spectral tile selection
CA2918810A Active CA2918810C (en) 2013-07-22 2014-07-15 Apparatus, method and computer program for decoding an encoded audio signal
CA2918807A Active CA2918807C (en) 2013-07-22 2014-07-15 Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency
CA2918804A Active CA2918804C (en) 2013-07-22 2014-07-15 Apparatus and method for decoding or encoding an audio signal using energy information values for a reconstruction band
CA2918835A Active CA2918835C (en) 2013-07-22 2014-07-15 Apparatus and method for encoding or decoding an audio signal with intelligent gap filling in the spectral domain
CA2886505A Active CA2886505C (en) 2013-07-22 2014-07-15 Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping
CA2918701A Active CA2918701C (en) 2013-07-22 2014-07-15 Audio encoder, audio decoder and related methods using two-channel processing within an intelligent gap filling framework
CA2973841A Active CA2973841C (en) 2013-07-22 2014-07-15 Apparatus, method and computer program for decoding an encoded audio signal

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CA2918810A Active CA2918810C (en) 2013-07-22 2014-07-15 Apparatus, method and computer program for decoding an encoded audio signal

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CA2918804A Active CA2918804C (en) 2013-07-22 2014-07-15 Apparatus and method for decoding or encoding an audio signal using energy information values for a reconstruction band
CA2918835A Active CA2918835C (en) 2013-07-22 2014-07-15 Apparatus and method for encoding or decoding an audio signal with intelligent gap filling in the spectral domain
CA2886505A Active CA2886505C (en) 2013-07-22 2014-07-15 Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping
CA2918701A Active CA2918701C (en) 2013-07-22 2014-07-15 Audio encoder, audio decoder and related methods using two-channel processing within an intelligent gap filling framework
CA2973841A Active CA2973841C (en) 2013-07-22 2014-07-15 Apparatus, method and computer program for decoding an encoded audio signal

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US (24) US10332539B2 (US06229276-20010508-P00077.png)
EP (20) EP2830056A1 (US06229276-20010508-P00077.png)
JP (12) JP6306702B2 (US06229276-20010508-P00077.png)
KR (7) KR101822032B1 (US06229276-20010508-P00077.png)
CN (12) CN111179963A (US06229276-20010508-P00077.png)
AU (7) AU2014295297B2 (US06229276-20010508-P00077.png)
BR (11) BR122022010965B1 (US06229276-20010508-P00077.png)
CA (8) CA2918524C (US06229276-20010508-P00077.png)
ES (9) ES2698023T3 (US06229276-20010508-P00077.png)
HK (1) HK1211378A1 (US06229276-20010508-P00077.png)
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PL (8) PL3025328T3 (US06229276-20010508-P00077.png)
PT (7) PT3407350T (US06229276-20010508-P00077.png)
RU (7) RU2640634C2 (US06229276-20010508-P00077.png)
SG (7) SG11201600496XA (US06229276-20010508-P00077.png)
TR (1) TR201816157T4 (US06229276-20010508-P00077.png)
TW (7) TWI555008B (US06229276-20010508-P00077.png)
WO (7) WO2015010948A1 (US06229276-20010508-P00077.png)
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