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1. WO2016137621 - TECHNIQUES FOR SETTING VOLUME LEVEL WITHIN A TREE OF CASCADED VOLUME CONTROLS WITH VARIATING OPERATING DELAYS

Publication Number WO/2016/137621
Publication Date 01.09.2016
International Application No. PCT/US2016/014683
International Filing Date 25.01.2016
IPC
H03G 3/30 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers
20Automatic control
30in amplifiers having semiconductor devices
H04R 3/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
CPC
G06F 3/165
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
16Sound input; Sound output
165Management of the audio stream, e.g. setting of volume, audio stream path
H03G 3/02
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers ; without distortion of the input signal
02Manually-operated control
H03G 3/3005
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers ; without distortion of the input signal
20Automatic control
30in amplifiers having semiconductor devices
3005in amplifiers suitable for low-frequencies, e.g. audio amplifiers
H03G 3/3089
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers ; without distortion of the input signal
20Automatic control
30in amplifiers having semiconductor devices
3089Control of digital or coded signals
H03G 5/165
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
5Tone control or bandwidth control in amplifiers
16Automatic control
165Equalizers; Volume or gain control in limited frequency bands
H03G 9/005
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
9Combinations of two or more types of control, e.g. gain control and tone control
005of digital or coded signals
Applicants
  • INTEL CORPORATION [US]/[US]
Inventors
  • UIMONEN, Jaska
  • PUUSTINEN, Ismo
  • EKSTROM, Jan
Agents
  • MALONEY, Neil F.
Priority Data
14/631,17725.02.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TECHNIQUES FOR SETTING VOLUME LEVEL WITHIN A TREE OF CASCADED VOLUME CONTROLS WITH VARIATING OPERATING DELAYS
(FR) TECHNIQUES DE RÉGLAGE DU NIVEAU DE VOLUME DANS UN ARBRE DE CONTRÔLES DE VOLUME EN CASCADE AVEC RETARDS OPÉRATIONNELS VARIABLES
Abstract
(EN)
Techniques are disclosed for synchronizing gain adjustments across a cascaded network of audio gain stages having variant operating delays. In particular, a delay-synchronized volume adjustment system configured in accordance with an embodiment of the present disclosure includes a controller operatively coupled to the cascaded network of audio and configured to apply gain adjustments in a synchronized manner that accounts for operating delays that are inherent to each gain stage. In an embodiment, the controller synchronously adjusts each gain stage relative to a corresponding operating delay such that gain adjustments fully propagate at substantially a same point in time within a given acceptable tolerance, and thus, eliminates or otherwise mitigates perceivable volume shifts when mixing audio from two or more audio sources.
(FR)
L'invention concerne de techniques d'ajustement de gain de synchronisation à travers un réseau en cascade d'étages de gain audio comportant des retards opérationnels variables. En particulier, un système d'ajustement de volume à synchronisation de retard configuré selon un mode de réalisation de la présente invention inclut un contrôleur couplé opérationnellement au réseau en cascade d'audio et configuré pour appliquer des ajustements de gain de manière synchronisée qui prend en compte les retards opérationnels qui sont inhérents à chaque étage de gain. Selon un mode de réalisation, le contrôleur ajuste de manière synchrone chaque étage de gain par rapport à un retard opérationnel correspondant de sorte que des ajustements de gain se propagent complètement sensiblement en un même point dans le temps avec une tolérance acceptable donnée, et ainsi, élimine ou pallie les décalages de volume pouvant être perçus lors du mélange audio provenant de deux sources audio ou plus.
Also published as
Latest bibliographic data on file with the International Bureau