DK178063B1 - Dynamic Configuring of a Multichannel Sound System - Google Patents

Dynamic Configuring of a Multichannel Sound System Download PDF

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Publication number
DK178063B1
DK178063B1 DK201400295A DKPA201400295A DK178063B1 DK 178063 B1 DK178063 B1 DK 178063B1 DK 201400295 A DK201400295 A DK 201400295A DK PA201400295 A DKPA201400295 A DK PA201400295A DK 178063 B1 DK178063 B1 DK 178063B1
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Denmark
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audio
sound
channels
channel
user
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DK201400295A
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Danish (da)
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Gorm Haldor Jørgensen
Søren Borup Jensen
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Bang & Olufsen As
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Priority to PCT/EP2015/061679 priority patent/WO2015185406A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S7/00Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30Control circuits for electronic adaptation of the sound field
    • H04S7/302Electronic adaptation of stereophonic sound system to listener position or orientation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00Public address systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S7/00Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30Control circuits for electronic adaptation of the sound field
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2227/00Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
    • H04R2227/005Audio distribution systems for home, i.e. multi-room use
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10General applications
    • H04R2499/13Acoustic transducers and sound field adaptation in vehicles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/02Spatial or constructional arrangements of loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S2400/00Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13Aspects of volume control, not necessarily automatic, in stereophonic sound systems

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

The present invention relates to a method and system for dynamic configuring an audio reproduction system comprising two or more sound channels. The aim of this dynamic configuration of the number of active channels is to reduce and optimize the power consumption in the active channels. The premises of the configuring and reconfiguring of number of active channels are based on conditions based on user perceptions listening to an actual audio source. The configuring means are based on a digital signal processor that configures the sound channels and optionally controls the same by adjusting the equalization, the delay and the gain.

Description

Dynamic Configuring of a Multichannel Sound SystemDynamic Configuring of a Multichannel Sound System

The present invention relates to a method and system for dynamic configuring an audio reproduction system comprising two or more sound channels. The aim of this dynamic configuration of the number of active channels is to reduce and optimize the power consumption in the audio system including the active channels. The premises of the configuring and reconfiguring of number of active channels are based on conditions based on user perceptions listening to an actual audio source.The present invention relates to a method and system for dynamically configuring an audio reproduction system comprising two or more sound channels. The aim of this dynamic configuration of the number of active channels is to reduce and optimize the power consumption in the audio system including the active channels. The premises of configuring and reconfiguring a number of active channels are based on conditions based on user perceptions listening to an actual audio source.

The configuring means are based on a digital signal processor that configures the sound channels and optionally controls the same by adjusting the equalization, the delay and the gain.The configuring means are based on a digital signal processor that configures the sound channels and optionally controls the same by adjusting the equalization, delay and gain.

In modern media rendering system including multichannel audio systems it's becoming a demand to operate these types of systems at the lowest level of power consumption. This due to the facts: • A standard multichannel system may be enabled with 20 or more channels, each controlled individually with audio control means and active loudspeaker amplifiers powered individually. • More and more sound systems are battery powered applications, e.g. in a car, thus having limited power resources available. A prior art system is disclosed in US 2014/0146970, where techniques are described for a collaborative sound system. In this system, mobile devices each including a loudspeaker are configured and may as such participate in a collaborative surround sound system. Mobile devices having "low battery status", are fully - or partly excluded from being member of the collaborative system, as they cannot deliver a required output level as rendering device.In a modern media rendering system including multichannel audio systems it is becoming a demand to operate these types of systems at the lowest level of power consumption. This is due to the facts: • A standard multichannel system may be enabled with 20 or more channels, each controlled individually with audio control means and active loudspeaker amplifiers powered individually. • More and more sound systems are battery powered applications, e.g. in a car, thus having limited power resources available. A prior art system is disclosed in US 2014/0146970, where techniques are described for a collaborative sound system. In this system, mobile devices each including a loudspeaker are configured and may as such participate in a collaborative surround sound system. Mobile devices having "low battery status" are fully or partially excluded from being a member of the collaborative system if they cannot deliver a required output level as a rendering device.

Contrary the above, the present invention configures according to available resources and to accommodate to a certain volume level, as requested by the user, all with the aim of power saving.Contrary to the above, the present invention configures according to available resources and to accommodate a certain volume level, as requested by the user, all with the aim of power saving.

Different aspects of power consumption are interesting to be candidates for power saving: • a general power consumption when the system is idle, i.e. no play back is active from any media file. • a variable setup of the configuration of active channels according to an actual need.Different aspects of power consumption are interesting to be candidates for power saving: • a general power consumption when the system is idle, i.e. no play back is active from any media file. • a variable setup of the configuration of active channels according to an actual need.

It's a well known problem in prior art loudspeaker systems operating in closed rooms/spaces e.g. a car, that the sound expired by the user may vary according to the listeners position in a space relative to the loudspeaker system transducers, and in addition to environmental noise, and provided sound level and music content.It is a well known problem in prior art loudspeaker systems operating in closed rooms / spaces e.g. a car that the sound experienced by the user may vary according to the listeners position in a space relative to the loudspeaker system transducers, and in addition to environmental noise, and provided sound level and music content.

Thus, to minimize power consumption and to obtain a certain perceived quality level of a loudspeaker system, e.g. in a car, the individual sound channels incorporating one or more loudspeaker modules must be activated/deactivated and calibrated and adjusted individually and according to above mentioned premises. A first aspect of the invention is: a method and a system to obtain power saving in an audio reproduction system comprising two or more sound channels where the power saving is enabled in an automatically configuring procedure having the steps: • determine each of the available sound channels means, • based on a user selection of an actual sound source to be rendered to the user via an audio reproduction system at least one of the sound channel means is enabled, • based on one or more events perceived by the user and related to one or more perceptual conditions, one or more additional sound channel means are enabled or disabled.Thus, to minimize power consumption and to obtain a certain perceived quality level of a loudspeaker system, e.g. In a car, the individual sound channels incorporating one or more loudspeaker modules must be activated / deactivated and calibrated and adjusted individually and according to the above mentioned premises. A first aspect of the invention is: a method and a system for obtaining power saving in an audio reproduction system comprising two or more sound channels where the power saving is enabled in an automatically configured procedure having the steps: • determine each of the available sound channels means, • based on a user selection of an actual sound source to be rendered to the user via an audio reproduction system, at least one of the sound channel means is enabled, • based on one or more events perceived by the user and related to one or more perceptual conditions, one or more additional sound channel means are enabled or disabled.

The invention discloses a surround sound system where different sound settings may be enabled via digital signal processing means controlling the individual sound channels parameters e.g. the equalization (filters), the delay, the gain (amplification). A second aspect of the invention is a perception optimized condition, source material content and channel selection or shutdown and where the perceptual conditions include: • audio source content characteristics like speech and/or music; • audio play back characteristics like surround sound, volume, balance, bass and/or treble levels; • environmental characteristics like noise level; • room characteristics like size/volume of the room and position and number of listeners in the room; • audio source content characteristics like meta data and other context related information.The invention discloses a surround sound system where different sound settings may be enabled via digital signal processing means controlling the individual sound channel parameters e.g. the equalization (filters), the delay, the gain (amplification). A second aspect of the invention is a perception optimized condition, source material content and channel selection or shutdown and where the perceptual conditions include: • audio source content characteristics such as speech and / or music; • audio playback characteristics such as surround sound, volume, balance, bass and / or treble levels; • environmental characteristics such as noise level; • room characteristics such as size / volume of the room and position and number of listeners in the room; • audio source content characteristics such as meta data and other context related information.

The invention discloses a solution that in an automatically mode of operation may fulfil the stated requirement "perceived optimized condition and source material dependent channel activation and shutdown".The invention discloses a solution that in an automatic mode of operation may fulfill the stated requirement "Perceived optimized conditioning and source material dependent channel activation and shutdown".

In summary the invention includes: • sensor means to detect the presence of a listener; • sensor means to detect environmental noise; • sound system modes of operation i.e. sound level from low to high; • sound system adjustments i.e. treble, bass and balance; • a mode of operation related to a user position or a required function e.g. driver, front, rear, and all; • information available according to music content (voice, music, surround); • multi channel sound system, e.g. two channels stereo, or a 5.1 surround sound system; • digital controlled sound system e.g. digital control of gain, equalization and delay; • active speakers including amplifiers and filters for each loudspeaker transducer, • control means to enable or disable sound rendering means to be become active or in-active.In summary, the invention includes: • sensor means to detect the presence of a listener; • sensor means to detect environmental noise; • sound system modes of operation i.e. sound level from low to high; • sound system adjustments i.e. treble, bass and balance; • a mode of operation related to a user position or a required function e.g. driver, front, rear, and all; • information available according to music content (voice, music, surround); • multi channel sound system, e.g. two channels stereo, or a 5.1 surround sound system; • digital controlled sound system e.g. digital control of gain, equalization and delay; • Active speakers including amplifiers and filters for each loudspeaker transducer; • Control means to enable or disable sound rendering means to become active or inactive.

The digital control of the sound system is based on standard means for: • gain: adjust the signal by a certain level, e.g. +0.1 dB; • delay: the signal is delayed by a specific time, e.g. 100 ms; • EQ: the signal is filtered according to the Finite Impulse Response principle (FIR) or the signal is filtered according to the Infinite Impulse Response principle (iiR); a number of coefficients are specified; the number of parameters typically to be from 1 > 1000.The digital control of the sound system is based on standard means for: • gain: adjust the signal at a certain level, e.g. +0.1 dB; • delay: the signal is delayed by a specific time, e.g. 100 ms; • EQ: the signal is filtered according to the Finite Impulse Response principle (FIR) or the signal is filtered according to the Infinite Impulse Response principle (iiR); a number of coefficients are specified; the number of parameters typically to be from 1> 1000.

The invention may be implemented in different embodiments, in which the alternative reconfiguring procedures may be implemented as: • a traditional algorithm in terms of a sequential software program in which the values of the resulting adjustment parameters and channel activation/deactivation are embedded in the code itself; the algorithm validates according to a specified system structure of an actual loudspeaker configuration; • a table based concept in which one or more tables defines the attributes to be applied per loudspeaker channel versus e.g., but not limited to, the power mode of operation, the listener position and content related information.The invention may be implemented in different embodiments, in which the alternative reconfiguring procedures may be implemented as: • a traditional algorithm in terms of a sequential software program in which the values of the resulting adjustment parameters and channel activation / deactivation are embedded in the code itself; the algorithm validates according to a specified system structure of an actual loudspeaker configuration; • A table based concept in which one or more tables define the attributes to be applied per loudspeaker channel versus e.g., but not limited to, the power mode of operation, the listener position and content related information.

According to specific requirements of a sound providing system miscellaneous features may be offered and controlled automatically and/or commanded by the user. The features may be used individually and/or mixed in a way that accommodates the user demands. A predefined combination of cannel selection and sound settings per channel and the functional options supports the processing.According to specific requirements of a sound providing system miscellaneous features may be offered and controlled automatically and / or commanded by the user. The features may be used individually and / or in a way that accommodates user requirements. A predefined combination of cannel selection and sound settings per channel and the functional options support the processing.

Examples of functional options are: • seat priority: driver, all, back, front, centre, left, right etc.; • a persons physical position: in a room, in a car, in a PA domain etc.; • zone priority: a zone includes one or more specific sound channels; • mode priority: movie, music, speech; • individual channel selection, activation and deactivation; • channel mode: stereo, surround sound 5.1, or other multi channel system of any order; • group of people: one or more listeners in a zone; • content of media voice, music, type of music e.g. genre. • Sound rendering system adjustment like volume, balance, loudness, timbre and bass.Examples of functional options are: • seat priority: driver, all, back, front, center, left, right etc .; • a person's physical position: in a room, in a car, in a PA domain etc .; • zone priority: a zone includes one or more specific sound channels; • mode priority: movie, music, speech; • individual channel selection, activation and deactivation; • channel mode: stereo, surround sound 5.1, or other multi channel system of any order; • group of people: one or more listeners in a zone; • content of media voice, music, type of music e.g. genre. • Sound rendering system adjustment like volume, balance, loudness, timbre and bass.

The configuring/reconfiguring process is provided as one or more algorithms to provide the calculation of each of the values of the sound channel selection and adjustment variables.The configuring / reconfiguring process is provided as one or more algorithms to provide the calculation of each of the values of the sound channel selection and adjustment variables.

In the preferred embodiment the reconfiguring process is provided as a table with relations provided to be accessed by the digital signal processor to provide each of the values of the sound channel adjustment variables.In the preferred embodiment the reconfiguring process is provided as a table with relations provided to be accessed by the digital signal processor to provide each of the values of the sound channel adjustment variables.

The saved attributes and key parameters are loaded into the reconfiguring means supported by electronically means, means that is connected wirelessly or connected wired to the audio reproduction system.The saved attributes and key parameters are loaded into the reconfiguring means supported by electronically means, means that are connected wirelessly or connected to the audio reproduction system.

In a third aspect of the invention the reconfiguring process provides the settings of the sound parameters; gain, equalization and delay for one sound channel, to be applied in one sound field zone related to the physical position of first group of people including one or more listeners.In a third aspect of the invention, the reconfiguring process provides the settings of the sound parameters; gain, equalization and delay for one sound channel, to be applied in one sound field zone related to the physical position of first group of people including one or more listeners.

In yet another aspect a person position is detected via standard sensor means like switches or infrared detectors or strain gauges or temperature sensitive detectors.In yet another aspect a person position is detected via standard sensor means like switches or infrared detectors or strain gauges or temperature sensitive detectors.

The configuring process is to be automatically executed and/or controlled by the audio amplifier means, including a digital signal processor, which drives the loudspeaker system. The reconfiguring means is embedded into an audio reproduction system.The configuring process is to be automatically executed and / or controlled by the audio amplifier means, including a digital signal processor, which operates the loudspeaker system. The reconfiguring means is embedded in an audio reproduction system.

In a preferred embodiment, the reconfiguring is controlled via a table mapping the mode of operation to adjustment parameters for each speaker in every channel or just relevant channels. The adjustment parameters are e.g. but not limited to: equalization, delay and gain.In a preferred embodiment, the reconfiguring is controlled via a table mapping the mode of operation to adjust parameters for each speaker in each channel or just relevant channels. The adjustment parameters are e.g. but not limited to: equalization, delay and gain.

This feature enables the option that in one configuration of selected channels to be active one set of parameters may be relevant in each of these channels and in another configuration of selected channels to be active another set of parameters may be relevant. E.g. channel one parameters may be defined with one set of data if channel two is active at the same time, and channel one parameters may be defined with another set of data if channel three is active at the same.This feature enables the option that in one configuration of selected channels to be active one set of parameters may be relevant in each of these channels and in another configuration of selected channels to be active another set of parameters may be relevant. E.g. channel one parameters may be defined with one set of data if channel two is active at the same time, and channel one parameters may be defined with another set of data if channel three is active at the same time.

The table may be represented as one or more data set as most appropriate to the digital controller unit. E.g. one data set may contain the relations among: • listener positions (center, front, back, middle, all, left/right), • loud speaker channel #, • sound level (off, low, medium, high).The table may be represented as one or more data sets most appropriate to the digital controller unit. E.g. one data set may contain the relationships among: • listener positions (center, front, back, middle, all, left / right), • loud speaker channel #, • sound level (off, low, medium, high).

Another data set may contain the functional/mode related information like: • functional settings (movie, audio only), • media/music content (voice, music, surround, video) • loud speaker channel #, • parameter settings (EQ, delay, and gain).Another data set may contain the functional / mode related information like: • functional settings (movie, audio only), • media / music content (voice, music, surround, video) • loud speaker channel #, • parameter settings (EQ, delay , and gain).

Yet another data set may contain the channel configurations: • examples of loud speaker channels, o Center, o TweeterFrontLeft (TFL), o MiddleFrontLeft (MFL), o WooferFrontLeft (WFL), o TweeterFrontRight (TFR), o MiddleFrontRight (MFR), o WooferFrontRight (WFR), o MiddleRearLeft (MRL), o MiddleRearRight (MRR), o WooferRearRight (WRR), o WooferRearLeft (WRL).Yet another data set may contain the channel configurations: • examples of loud speaker channels, o Center, o TweeterFrontLeft (TFL), o MiddleFrontLeft (MFL), o WooferFrontLeft (WFL), o TweeterFrontRight (TFR), o MiddleFrontRight (MFR), o WooferFrontRight (WFR), o MiddleRearLeft (MRL), o MiddleRearRight (MRR), o WooferRearRight (WRR), o WooferRearLeft (WRL).

• examples of channel configurations: o Center, TFL.WFL o Center, TFL,WFL,TFR, MFR, WFR• examples of channel configurations: o Center, TFL.WFL o Center, TFL, WFL, TFR, MFR, WFR

o Center, TFL,WFL,TFR, MFR, WFR, WRR, WRL, MRR, MRLo Center, TFL, WFL, TFR, MFR, WFR, WRR, WRL, MRR, MRL

This table concept is considered to be a data driven control systems, and enables for easy updates of the functional behaviour of a specific system simply by loading alternative data set into the controller.This table concept is considered to be a data driven control system, and enables easy updates of the functional behavior of a specific system simply by loading alternative data set into the controller.

In addition, the invention includes a Constraint Solver (CS), which comprises a table with digital data representing the constraints of the passenger positions and related acoustical adjustment, attributes and corresponding variable values.In addition, the invention includes a Constraint Solver (CS), which comprises a table with digital data representing the constraints of the passenger positions and related acoustical adjustment, attributes and corresponding variable values.

The constraint solver processing enables an arbitrary access mode to information with no order of sequences required. This is an important advantage over prior art tree-like programming structure, where the starting point is given by the root of the tree. Especially, when finding ways from nodes within the tree-like program to a specific target location in the tree, it may be obscure with regard to which way to choose, whether backwards or forward, and the final solution may be a new start from the root.The constraint solver processing enables an arbitrary access mode to information with no order of sequences required. This is an important advantage over prior art tree-like programming structure, where the starting point is given by the root of the tree. Especially, when finding ways from nodes within the tree-like program to a specific target location in the tree, it may be obscure with regard to which way to choose, whether backwards or forwards, and the final solution may be a fresh start from the root.

According to the invention, the product configuration domain table is organized as relations among variables in the general mathematical notation of 'Disjunctive Form':According to the invention, the product configuration domain table is organized as relations among variables in the general mathematical notation of 'Disjunctive Form':

AttribVariable 1.1 and AttribVariable 1.2 and AttribVariable 1.3 and AttribVariable 1 .n Or AttribVariable 2.1 and AttribVariable 2.2 and AttribVariable 2.3 and AttribVariable 2.nAttribVariable 1.1 and AttribVariable 1.2 and AttribVariable 1.3 and AttribVariable 1 .n Or AttribVariable 2.1 and AttribVariable 2.2 and AttribVariable 2.3 and AttribVariable 2.n

Or OrOr Or

Or AttribVariable m.1 and AttribVariable m.2 and AttribVariable m.3 and AttribVariable m.nOr AttribVariable m.1 and AttribVariable m.2 and AttribVariable m.3 and AttribVariable m.n

For example, AttribVariable 1.1 defines people position, AttribVariable 1.2 defines music content, AttribVariable 1.3 defines environment and AttribVariable 1 .n defines channels configuration.For example, AttribVariable 1.1 defines people position, AttribVariable 1.2 defines music content, AttribVariable 1.3 defines environment and AttribVariable 1 .n defines channels configuration.

In another example, AttribVariable 2.n may be a reference to another table.In another example, AttribVariable 2.n may be a reference to another table.

With this method of defining the problem domain, it becomes a multi-dimensional state space enabling equal and direct access to any point in the defined set of solutions. The term multidimensional has to be understood as a contrast to a treelike programming structure, which is two-dimensional.With this method of defining the problem domain, it becomes a multi-dimensional state space enabling equal and direct access to any point in the defined set of solutions. The term multidimensional has been understood as a contrast to a treelike programming structure, which is two-dimensional.

Alternative configurations may be evaluated by the CS, the alternatives being one or more of the defined set of legal combination in the constraint table.Alternative configurations may be evaluated by the CS, the alternatives being one or more of the defined set of legal combination in the constraint table.

The example illustrates alternative solutions for x, y when y is given:The example illustrates alternative solutions for x, y when y is given:

The: If x Then y may be represented as x -> yThe: If x Then y may be represented as x -> y

With the truth table:With the truth table:

Figure DK178063B1D00071

Given the premise x is Ί ' the conclusion y is Ί '.Given the premise x is Ί 'the conclusion y is Ί'.

Given the conclusion y is Ί ' the premises for x may be Ί 'or O'.Given the conclusion y is Ί 'the premises for x may be' or O '.

Thus, when y is '1 ' the alternatives for x are Ί ' or O'.Thus, when y is '1' the alternatives for x are Ί 'or O'.

Represented in a constraint table the x -> y has the legal combinations of x, y:Represented in a constraint table the x -> y has the legal combinations of x, y:

Figure DK178063B1D00081

Table entries in a constraint table may be combined into legal/illegal combination such that all the well known logical operators known from the Boolean algebra will be included as required. The logical operators being: AND, OR, NOT, XOR, Logical Implication (->), Logical Bi-implication (=).Table entries in a constraint table may be combined into legal / illegal combination such that all the well-known logical operators known from the Boolean algebra will be included as required. The logical operators being: AND, OR, NOT, XOR, Logical Implication (->), Logical Bi-implication (=).

An example of a table definition for an activation of individual channels is given below:An example of a table definition for activating individual channels is given below:

Figure DK178063B1D00082

An example of a table definition for an adjustment of individual channel parameters is displayed below:An example of a table definition for an adjustment of individual channel parameters is shown below:

Figure DK178063B1D00083
Figure DK178063B1D00091

Thus in an aspect of the invention the reconfiguring means is embedded into an audio reproduction system. Thus the system becomes the controller of the reconfiguring process that provides a reconfiguration of the system itself.Thus, in an aspect of the invention the reconfiguring means is embedded in an audio reproduction system. Thus the system becomes the controller of the reconfiguring process which provides a reconfiguration of the system itself.

In the following, preferred embodiments of the invention will be described with reference to the drawings wherein:In the following, preferred embodiments of the invention will be described with reference to the drawings:

Figure 1 displays components that constitute a conceptual model of the invention;Figure 1 displays components that constitute a conceptual model of the invention;

Figure 2 displays an example of an embodiment of the invention displaying a plurality of sound channels in a sound system.Figure 2 shows an example of an embodiment of the invention displaying a plurality of sound channels in a sound system.

Figure 1 display components that constitute examples of a media rendering system including control of actual sound channel amplifiers to be enabled or disabled.Figure 1 display components that constitute examples of a media rendering system including control of actual sound channel amplifiers to be enabled or disabled.

Control means (10) being included into a media rendering system may select one or more amplifier channels (11) to be activated or deactivated according to criteria as perceived by the user (18). A configuration table (12) is configured with data including actual status of any of the one or more channels, and optionally with actual values for parameters for equalization, delay and gain per channel.Control means (10) being included in a media rendering system may select one or more amplifier channels (11) to be activated or deactivated according to criteria perceived by the user (18). A configuration table (12) is configured with data including actual status of any one or more channels, and optionally with actual values for parameters for equalization, delay and gain per channel.

These data may be pre-set and updated dynamically during operation according to actual system requirements.This data may be pre-set and updated dynamically during operation according to actual system requirements.

In a high quality audio reproduction system a dedicated filter means, an equalizer is provided per amplifier. The means (3) provides a frequency dependent amplification to control the overall gain, which may be regulated up or down as required.In a high quality audio reproduction system a dedicated filter means, an equalizer is provided per amplifier. The means (3) provides a frequency dependent amplification to control the overall gain, which may be adjusted up or down as required.

This feature enables for adjustment of one channel to relate to another channel, e.g. to control the sound distribution into individual zones of sound fields, such that the sound delay among channels can be controlled.This feature allows one channel adjustment to relate to another channel, e.g. to control the sound distribution into individual zones of sound fields, such that the sound delay among channels can be controlled.

The premises for the channel selection criteria are based on: • sensor readings (14), this being environmental related e.g. noise, • user (18) manual selection, • content related media information (16) in streams, files and alike. A constraint data table (15) defines the relationship among premises and corresponding conclusion to make; specifically about which channels (11) must be activated or deactivated according to the situation perceived by the user (18). These constraint data may be pre-set and updated dynamically during operation according to actual system requirements.The premises for the channel selection criteria are based on: • sensor readings (14), this being environmentally related e.g. noise, • user (18) manual selection, • content related media information (16) in streams, files and alike. A constraint data table (15) defines the relationship among premises and corresponding conclusion to be made; specifically about which channels (11) must be activated or deactivated according to the situation perceived by the user (18). This constraint data may be pre-set and updated dynamically during operation according to actual system requirements.

Figure 2 displays the example of an audio reproduction system comprising loudspeaker modules configured in a multi channel concept e.g. a 5.1 surround sound system.Figure 2 shows the example of an audio reproduction system comprising loudspeaker modules configured in a multi channel concept e.g. and 5.1 surround sound system.

Basic system components are displayed like loudspeaker transducer, amplifier, equalization means, delay (1,2,3,4).Basic system components are displayed as loudspeaker transducer, amplifier, equalization means, delay (1,2,3,4).

In fact any number of channels (22) may be handled; having a corresponding table complex related according to the actual functional system requirements.In fact any number of channels (22) may be handled; having a corresponding table complex related according to the actual functional system requirements.

The audio reproduction system may be an audio amplifier (20), including a digital signal processor, to controlling and driving the loudspeaker channels (22), and to provide a signal (21) that's amplified and filtered and delayed accordingly.The audio reproduction system may be an audio amplifier (20), including a digital signal processor, to control and drive the loudspeaker channels (22), and to provide a signal (21) that is amplified and filtered and delayed accordingly.

Input from sensor means (23) determines the mode and functional operation of the control system and may be of different nature e.g. but not limited to: simple switch, accelerometer, infrared detection, thermal sensing, noise (microphone) etc.Input from sensor means (23) determines the mode and functional operation of the control system and may be of a different nature e.g. but not limited to: simple switch, accelerometer, infrared detection, thermal sensing, noise (microphone) etc.

In the preferred embodiment the sensors primarily detects the position of a user in a room/space, the position to be related to the sound field that's relevant for the one or more users /listeners. E.g. in a vehicle the detection of a user position is where the individual users are seated. The detection in this system may be via a simple switch in every seat, or via switches related to the security belts.In the preferred embodiment, the sensors primarily detect the position of a user in a room / space, the position to be related to the sound field that is relevant to the one or more users / listeners. E.g. in a vehicle the detection of a user position is where the individual users are seated. The detection in this system may be via a simple switch in each seat, or via switches related to the security belts.

Additional control signals may be received as user commands (24), e.g. a command to 'enable automatic sound control' and content/context related information (25), e.g. information about the time of the day and/or the type of music actual in play. This additional control signal information to be used as input into the digital signal processor to control mode and functional operation of the sound system.Additional control signals may be received as user commands (24), e.g. a command to 'enable automatic sound control' and content / context related information (25), e.g. information about the time of day and / or the type of music actually in play. This additional control signal information is used as input into the digital signal processor to control mode and functional operation of the sound system.

The content sensing is primarily to detect on the incoming media input the type of audio which is received, e.g. voice/speech or music.The content sensing is primarily to detect on the incoming media input the type of audio received, e.g. voice / speech or music.

In a preferred embodiment the configure/reconfigure means is imbedded into the controller of the audio sound system. Thus the audio sound system is the master having the digital signal processor means (20) that initiates, controls and applies the reconfiguring process. Alternative table definitions may be loaded into the digital signal processor (20) from external means e.g. a laptop/PC (26).In a preferred embodiment the configure / reconfigure means is embedded in the controller of the audio sound system. Thus the audio sound system is the master having the digital signal processor means (20) that initiates, controls and applies the reconfiguring process. Alternative table definitions may be loaded into the digital signal processor (20) from external means e.g. and laptop / PC (26).

The invention may be applied in relation to automatically adjusting an audio sound system to a maximum level of quality as perceived by the user.The invention may be applied in relation to automatically adjusting an audio sound system to a maximum level of quality as perceived by the user.

The invention includes sound channel configurations to be applied in surround sound systems and traditional stereophonic system, and to be applied in any domain like a home, in a vehicle, in an airplane in a boat, in an office or in any other public domain and alike.The invention includes sound channel configurations to be applied in surround sound systems and traditional stereophonic systems, and to be applied in any domain such as a home, in a vehicle, in an airplane in a boat, in an office or in any other public domain and alike.

Claims (3)

1. En metode til at opnå effektbesparelse i et audio-gengive system der inkluderer to eller flere lydkanaler, og i hvilket effektbesparelse er etableret ved hjælp af en konfigurerings-procedure i følgende trin: • identificer hver af de tilgængelige lydkanal-midler, • aktiver mindst et af lydkanal-midlerne, ifølge et brugervalg af en aktuel lydkilde, som skal formidles til brugeren via et audio-gengive system, • aktiver eller deaktiver ét eller flere ekstra lydkanal-midler, baseret på én eller flere hændelser, oplevet af brugeren og relateret til én eller flere perceptuelle betingelser, i hvilke er inkluderet karakterisering af lydkilde-indhold værende tale og/eller musik, og en brugervalgt lydstyrke og inkluderer omgivelseskarakteristika som støjniveau, og inkluderer rum-karakteristika som størrelse/volume af rummet og position og antal af lyttere i rummet, og karakterisering af lydkilde-indhold som metadata samt anden kontekstrelateret information og er karakteriseret ved at konfigureringsproceduren er en løsningsmaskine, som finder én eller flere lovlige kombinationer blandt alle definerede sæt af lovlige kombinationer for de én eller flere lydkanal midler, som er defineret i en tabel.1. A method of achieving power saving in an audio reproduction system that includes two or more audio channels and in which power saving is established by a configuration procedure in the following steps: • identify each of the available audio channel means, • enable at least one of the audio channel means, according to a user selection of a current audio source to be communicated to the user via an audio reproduction system, • enable or disable one or more additional audio channel means, based on one or more events experienced by the user and related to one or more perceptual conditions, which include characterization of audio source content being speech and / or music, and a user-selected volume and include ambient characteristics such as noise level, and includes space characteristics such as size / volume of space and position and number of listeners in the room, and characterization of audio source content as metadata as well as other context-related information and is characteristic Seen in that the configuration procedure is a solver that finds one or more legal combinations among all defined sets of legal combinations for the one or more audio channel means defined in a table. 2. En metode ifølge krav 1, i hvilken konfigurerings-proceduren formidler indstilling af lydparameterne gain, equalization og delay for hver af de én eller flere lydkanaler.A method according to claim 1, in which the configuration procedure mediates the setting of the audio parameters gain, equalization and delay for each of the one or more audio channels. 3. En metode ifølge krav 2, i hvilken konfigurerings-proceduren formidler indstilling af lydparameterne gain, equalization og delay for én kanal ved at relatere til lyd parameterne gain, equalization og delay for en anden kanal.A method according to claim 2, in which the configuration procedure conveys setting the audio parameters gain, equalization and delay for one channel by relating to the audio parameters gain, equalization and delay for another channel.
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Publication number Priority date Publication date Assignee Title
CN110413251A (en) * 2019-07-02 2019-11-05 青岛海尔空调器有限总公司 For controlling the method, apparatus and air-conditioning of speaker
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007127762A2 (en) * 2006-04-28 2007-11-08 Cirrus Logic, Inc. Method and system for sound beam- forming using internal device speakers in conjunction with external speakers
WO2010000807A2 (en) * 2008-07-03 2010-01-07 Bang & Olufsen A/S A system and a method for configuring af loudspeaker system
US20100172522A1 (en) * 2009-01-07 2010-07-08 Pillar Ventures, Llc Programmable earphone device with customizable controls and heartbeat monitoring
US7792311B1 (en) * 2004-05-15 2010-09-07 Sonos, Inc., Method and apparatus for automatically enabling subwoofer channel audio based on detection of subwoofer device
US20130177198A1 (en) * 2012-01-09 2013-07-11 Imation Corp. Wireless Audio Player and Speaker System
US20140146970A1 (en) * 2012-11-28 2014-05-29 Qualcomm Incorporated Collaborative sound system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6987947B2 (en) * 2001-10-30 2006-01-17 Unwired Technology Llc Multiple channel wireless communication system
US20050100174A1 (en) * 2002-11-08 2005-05-12 Damian Howard Automobile audio system
JP5147680B2 (en) * 2008-12-26 2013-02-20 キヤノン株式会社 Audio processing apparatus and audio processing method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7792311B1 (en) * 2004-05-15 2010-09-07 Sonos, Inc., Method and apparatus for automatically enabling subwoofer channel audio based on detection of subwoofer device
WO2007127762A2 (en) * 2006-04-28 2007-11-08 Cirrus Logic, Inc. Method and system for sound beam- forming using internal device speakers in conjunction with external speakers
WO2010000807A2 (en) * 2008-07-03 2010-01-07 Bang & Olufsen A/S A system and a method for configuring af loudspeaker system
US20100172522A1 (en) * 2009-01-07 2010-07-08 Pillar Ventures, Llc Programmable earphone device with customizable controls and heartbeat monitoring
US20130177198A1 (en) * 2012-01-09 2013-07-11 Imation Corp. Wireless Audio Player and Speaker System
US20140146970A1 (en) * 2012-11-28 2014-05-29 Qualcomm Incorporated Collaborative sound system

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