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1. (WO2013186561) DOUBLY COMPATIBLE LOSSLESS AUDIO BANDWIDTH EXTENSION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2013/186561 International Application No.: PCT/GB2013/051548
Publication Date: 19.12.2013 International Filing Date: 12.06.2013
IPC:
G10L 19/24 (2013.01) ,G10L 19/00 (2013.01)
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19
Speech or audio signal 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
04
using predictive techniques
16
Vocoder architecture
18
Vocoders using multiple modes
24
Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19
Speech or audio signal 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
Applicants:
MERIDIAN AUDIO LIMITED [GB/GB]; Latham Road Huntingdon Cambridgeshire PE29 6YE, GB
CRAVEN, Peter Graham [GB/GB]; GB
LAW, Malcolm [GB/GB]; GB
Inventors:
CRAVEN, Peter Graham; GB
LAW, Malcolm; GB
STUART, John Robert; GB
Agent:
GILL JENNINGS & EVERY LLP; The Broadgate Tower 20 Primrose Street London Greater London EC2A 2ES, GB
Priority Data:
1210373.512.06.2012GB
Title (EN) DOUBLY COMPATIBLE LOSSLESS AUDIO BANDWIDTH EXTENSION
(FR) EXTENSION DE LARGEUR DE BANDE AUDIO SANS PERTE À DOUBLE COMPATIBILITÉ
Abstract:
(EN) An encoder for digital audio signals at a higher sample rate creates a stream for consumer distribution at a lower sampling rate, with compatibility for standard PCM players without a decoder. In conjunction with a suitable decoder, two enhanced playback options are supported, the first option allowing full lossless reconstruction of a noise-shaped higher sampling rate signal, the second option allowing lossy bandwidth extension even if an intervening transmission chain has truncated the least-significant-bits of the encoder's output signal.
(FR) Un codeur de signaux audio numériques à une fréquence d'échantillonnage élevée, crée un flux de données destiné à être distribué à un consommateur à une fréquence d'échantillonnage faible, avec une compatibilité avec des lecteurs PCM standard sans décodeur. En association avec un décodeur approprié, deux options de lecture améliorées sont supportées : la première option permettant une reconstruction totale sans perte d'un signal à fréquence d'échantillonnage élevée à bruit mis en forme; la seconde option permettant une extension de la largeur de bande avec perte même si une chaîne de transmission intervenante a tronqué les bits de poids faibles du signal de sortie du codeur.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2859548CN104508740US20150154969JP2015519615KR1020150032699CA2898923