EP 2905774 A1 20150812 - Method for synthesszing a digital audio signal
Title (en)
Method for synthesszing a digital audio signal
Title (de)
Verfahren zur synthetischen Erzeugung eines digitalen Audiosignals
Title (fr)
Procédé de génération synthétique d'un signal audio numérique
Publication
Application
Priority
EP 14154741 A 20140211
Abstract (en)
[origin: WO2015121194A1] The invention relates to a method for the synthetic generation of a digital audio signal by means of periodic sampling of a waveform to permit the user particularly simple and intuitive access to the changing and creative transformation of the waveform on which the sampling is based. For this purpose, according to the invention, the waveform is specified by using control points which, in addition to position parameters, can contain further attributes, of which the parameters and attributes can be changed individually over time by means of control signals or spontaneous intervention. The control point values which result in this way can be interpreted either as direct amplitude-period phase pairs, as magnitude-frequency pairs, or as phase-frequency pairs. A continuous waveform is generated by interpolation or approximation of the control points and the parameters/attributes of the latter, which assume a time-specific value depending on the current control signals and other influences, and can be used for further processing, e.g. spectral band limiting.
Abstract (de)
Ein Verfahren zur synthetischen Erzeugung eines digitalen Audiosignals durch periodische Abtastung einer Wellenform soll dem Nutzer einen besonders einfach gehaltenen und intuitiven Zugang zur Veränderung und kreativen Umgestaltung der der Abtastung zugrunde gelegten Wellenform ermöglichen. Dazu wird erfindungsgemäß die Wellenform aus einer Anzahl von zeitlich aufeinanderfolgenden, jeweils durch eine segmentspezifische Linearkombination aus einer Anzahl von Basisfunktionen definierten Wellensegmenten (32) zusammengesetzt, wobei die Linearkoeffizienten für jedes Wellensegment (32) derart gewählt werden, dass das jeweilige Wellensegment (32) an seinen Segmenträndern (34) jeweils vorgebbare, veränderbare Amplitudenrandwerte aufweist.
IPC 8 full level
G10H 7/08 (2006.01)
CPC (source: EP US)
G10H 1/04 (2013.01 - US); G10H 7/02 (2013.01 - US); G10H 7/08 (2013.01 - EP US); G10H 7/10 (2013.01 - US); G10H 2250/205 (2013.01 - EP US); G10H 2250/565 (2013.01 - US)
Citation (search report)
- [X] US 6124542 A 20000926 - WANG AVERY L [US]
- [X] NICK COLLINS: "SplineSynth: An Interface to Low Level Digital Audio", PROCEEDINGS OF THE 1999 DIDEROT FORUM ON MATHEMATICS AND MUSIC: VIENNA, AUSTRIA, DECEMBER 2-4, 1999, 1 January 1999 (1999-01-01), Vienna, pages 49 - 62, XP055116956, ISBN: 978-3-85-403133-8, Retrieved from the Internet <URL:http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.11.9924&rep=rep1&type=pdf> [retrieved on 20140508]
- [A] "Nonlinear Abstract Sound Synthesis Algorithms - Doctoral Dissertation", 1 January 2013, UNIGRAFIA OY, Halsinki, ISBN: 978-9-52-605016-7, article JARI KLEIMOLA: "Nonlinear Abstract Sound Synthesis Algorithms - Doctoral Dissertation", pages: 1 - 65, XP055116976
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2905774 A1 20150812; DK 3105753 T3 20180507; EP 3105753 A1 20161221; EP 3105753 B1 20180131; ES 2667492 T3 20180511; NO 3105753 T3 20180630; US 2017011727 A1 20170112; US 9741329 B2 20170822; WO 2015121194 A1 20150820
DOCDB simple family (application)
EP 14154741 A 20140211; DK 15707298 T 20150209; EP 15707298 A 20150209; EP 2015052630 W 20150209; ES 15707298 T 20150209; NO 15707298 A 20150209; US 201515117898 A 20150209