WO2017005302A1 - Image display device with adaptive sound pressure level adjustment function - Google Patents

Image display device with adaptive sound pressure level adjustment function Download PDF

Info

Publication number
WO2017005302A1
WO2017005302A1 PCT/EP2015/065486 EP2015065486W WO2017005302A1 WO 2017005302 A1 WO2017005302 A1 WO 2017005302A1 EP 2015065486 W EP2015065486 W EP 2015065486W WO 2017005302 A1 WO2017005302 A1 WO 2017005302A1
Authority
WO
WIPO (PCT)
Prior art keywords
image display
display device
pressure
sound
pressure level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/065486
Other languages
French (fr)
Inventor
Emrah Mustafa HOSCOSKUN
Ibrahim DEMIREL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PCT/EP2015/065486 priority Critical patent/WO2017005302A1/en
Publication of WO2017005302A1 publication Critical patent/WO2017005302A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/04—Circuits for transducers for correcting frequency response

Definitions

  • the present invention relates to an image display device capable of adapting the sound pressure level based on the ambient pressure variance according to the specific environment of said image display device.
  • sound pressure level is associated with pressure variations caused by the sound waves in the air.
  • the lowest sound pressure heard by humans is referred to as hearing threshold.
  • sound pressure can be measured by a microphone.
  • Image display devices may be preconfigured to apply certain predefined sound enhancement blocks being presented to the user in order for increasing the sound quality by way of enabling the user to select a sound preset. This approach does not yield completely satisfactory results for the unique reason that each of these predefined enhancement blocks basically aim to increase the sound quality for only one type of audio content.
  • the audio systems typically allow the user to manually set up the above-mentioned parameters through a controller on a control unit of the audio system.
  • fine-tunings and adjustment of the parameters can be complex and difficult especially for the so-called technically non-competent people as well as older persons.
  • a typical situation which affects the sound output quality is the case where an ambient sound generated from outside makes it harder to hear the sound of the TV set.
  • the subsequent reaction of the user could be to increase the volume to compensate the generated noise. Therefore, noticeably improper sound quality may occur and manual adjustment of the settings may be needed for the optimal sound performance, which can cause dissatisfaction for the user.
  • An adaptive sound pressure level (SPL) system enables the user to hear the output sound better even when an external noise interferes with the broadcast program’s sound.
  • the adaptive sound pressure level system automatically adjusts the sound pressure level depending on the ambient pressure and background noise.
  • US2014328506 discloses methods and systems for automatic configuration of wireless speakers.
  • a system is described whereby a wireless speaker is configured to use an audio tone to generate a sound wave.
  • the sound wave is received by an audio input/output device, which uses the received sound wave to generate audio information.
  • a processor is configured to use the audio information to determine a distance between the wireless speaker and the audio input/output device, and to configure an audio parameter of the wireless speaker as a function of the distance.
  • the present invention provides an adaptive sound pressure level (SPL) system automatically adjusting sound performance parameters of the image display device based on ambient pressure deviations as defined by the characterizing features in Claim 1.
  • SPL adaptive sound pressure level
  • Primary object of the present invention is to provide an adaptive sound pressure level system for automatic optimization of the sound pressure level to output an improved audio quality at different environmental conditions with different background pressure levels in the ambient pressure.
  • the present invention proposes an image display device automatically effectuating sound optimization through sound pressure level adjustment by way of analyzing pressure deviances in the vicinity of said image display device .
  • the image display device comprises an electronic control unit in communication with a pressure meter so that the sound pressure level of the loudspeakers are adjusted depending on the ambient pressure levels as measured by said pressure meter on a continuous or periodical basis.
  • the pressure meter is a digital barometric pressure sensor whose readings are compared to reference values in a preloaded database in order for obtaining the corresponding voltage values to be applied to the loudspeakers.
  • the image display device can retrieve the information as to the ambient pressure by connecting to a remote server through a wide-area network (WAN) connection on a periodical basis so as to obtain the most recent ambient pressure value information based on the altitude and weather conditions of the specific location.
  • Information as to the altitude and specific location of the image display device can be inputted by the user to be recorded by the image display device.
  • WAN wide-area network
  • Fig. 1 demonstrates a general flow diagram of an adaptive sound pressure level adjustment method as executed by the image display device according to the present invention.
  • Fig. 2 demonstrates a general flow diagram of an adaptive sound pressure level measurement and calibration method according to the present invention.
  • the present invention relates to an image display device such as for instance an LCD or LED TV, having an adaptive sound pressure level system (SPL) automatically effectuating sound performance optimization through sound pressure level adjustment by analyzing ambient pressure deviances in the specific environment in association with said image display device.
  • SPL adaptive sound pressure level system
  • at least one built-in loudspeaker being in electrical communication with said image display device outputs sound waves in association with the broadcast program received by the image display device.
  • the image display device of the invention comprises an adaptive SPL system with a pressure meter, for instance in the form of a digital barometric pressure sensor being available in the market under many trade names and finding widespread use in electronic household appliances.
  • a digital barometric pressure sensor continuously or periodically effectuates measurement of the ambient pressure and accordingly monitors changes during regular operation of the image display device as will be delineated hereinafter.
  • the image display device typically comprises an electronic control unit to adjust and control the sound pressure level of the loudspeakers.
  • the pressure meter provides real-time data so as to be processed by the electronic control unit to drive said loudspeakers.
  • An internal memory unit of the image display device stores operational data and includes a database of pressure levels.
  • Said database comprises corresponding voltage values for individual pressure levels.
  • the pressure value generally varies depending on the specific location and altitude of the image display device as well as the background noises in the environment.
  • the pressure value measured by the pressure meter is compared to the reference values in the database in order for obtaining the corresponding voltage values to be applied on the loudspeakers for an optimized audio quality during operation of the image display device.
  • the preloaded database contains various ambient pressure values associated with different voltage values to be used to drive the loudspeakers. Therefore, the preloaded internal database of the image display serves to the purpose of associating measured sound pressure levels by the image display device with different reference voltage values previously obtained during a measurement and calibration step by the manufacturer. The obtained voltage values as retrieved from the preloaded internal database provide optimization of the loudspeakers’ sound quality.
  • the reference values in the preloaded database are typically measured in an acoustically isolated environment at 25°C and sound pressure levels outputted by the loudspeakers as optimized according to human ear sensitivity are associated with reference electrical values. The ideal frequency response of the loudspeakers is therefore maintained.
  • voltage values under different ambient pressure levels are determined so as to maintain the same sound pressure levels optimized according to human ear sensitivity. Accordingly, a lookup table or database of ambient sound pressure levels and associated voltage values is obtained.
  • the preloaded internal database and associated data is stored in the memory unit of the image display device.
  • the electronic control unit accordingly performs measurement of the ambient sound pressure by means of said pressure meter and retrieves from the database the necessary voltage value in order for driving the loudspeakers.
  • the pressure measured by the pressure meter during the regular operation of the image display device is compared with the values in the database and the voltage corresponding to the specific pressure level being measured is applied to the loudspeaker in order to optimize the sound pressure level by way of decreasing or increasing the applied voltage.
  • the ambient pressure may fluctuate depending on the atmospheric conditions such that a first measurement and a second subsequent measurement by the pressure meter may present different results so as to influence the viewing experience of the user unless voltage calibration is performed.
  • the image display device therefore uses the internal database to dynamically recalibrate the driving voltage of the loudspeakers.
  • the image display device takes measurements, preferably each time it is turned on and on a continuous or periodical basis. Dynamically varied voltage values to obtain different loudspeaker sound pressure levels provide an automatically improved sound quality for the image display device during its operation.
  • the information as to the ambient pressure may be alternatively or additionally obtained by the image display device through connecting to a remote server via Internet and retrieving the required information based on the altitude and weather conditions of the specific location.
  • the obtained data may directly contain specific voltage values or may alternatively contain a look-up table of location-based pressure level values so that the image display device can itself determine the respective voltage values through the internal database.
  • Information as to the altitude and specific location of the image display device can be inputted by the user to be recorded by the image display device.
  • the present invention further provides adaptation of the sound volume (intensity) by adjusting audio output of said image display device conventionally by strengthening or weakening the energy of specific frequency bands. Additionally, it is possible to support the adaptation of the sound level by changing equalizer presets, typically altering the frequency response of the audio system, in which case the image display device’s audio system adjusts the gain at a certain frequency band.
  • the present invention proposes an image display device comprising at least one loudspeaker and an adaptive sound pressure level adjustment system automatically effectuating sound optimization through sound pressure level adjustment by way of analyzing pressure deviances in the surrounding of said image display device
  • said adaptive sound pressure level adjustment system comprises an electronic control unit to adjust and control the sound pressure level of said at least one loudspeaker in accordance with ambient pressure level measured by a pressure meter of the image display device.
  • the pressure meter provides real-time data so as to be processed by the electronic control unit to drive said at least one loudspeaker.
  • an internal memory unit of the image display device stores operational data in the form of a database of pressure levels associated with corresponding voltage values.
  • the pressure meter is a digital barometric pressure sensor.
  • the digital barometric pressure sensor continuously or periodically effectuates measurement of the ambient pressure.
  • the pressure value measured by the digital barometric pressure sensor is compared to the reference values in the database in order for obtaining the corresponding voltage values to be applied to the at least one loudspeaker.
  • the electronic control unit of the image display device provides that the digital barometric pressure sensor takes pressure measurements each time the image display device is turned on.
  • the information as to the ambient pressure is obtained by the image display device through connecting to a remote server via a network connection/computer network.
  • the image display device retrieves the ambient pressure value information based on the altitude and weather conditions of the specific location.
  • the image display device updates the location-based ambient pressure value information on a periodical basis.
  • the automatic adjustment of the sound pressure level by way of increasing and decreasing the applied voltage through the adaptive SPL system ensures a more pleasant viewing experience on the part of users due to the improved sound quality.
  • the adaptive SPL system eliminates the adverse effects of pressure fluctuations on the sound quality and ensures that the sound level set by the user remains constant, thereby preventing the user from turning the volume up or down during television viewing.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Television Receiver Circuits (AREA)

Abstract

The present invention relates to an image display device capable of adapting the sound pressure level based on the ambient pressure variance according to the specific environment of said image display device. More particularly, the present invention relates to an image display device comprising at least one loudspeaker and an adaptive sound pressure level adjustment system automatically effectuating sound optimization through sound pressure level adjustment by way of analyzing pressure deviances in the surrounding of said image display device.

Description

IMAGE DISPLAY DEVICE WITH ADAPTIVE SOUND PRESSURE LEVEL ADJUSTMENT FUNCTION
The present invention relates to an image display device capable of adapting the sound pressure level based on the ambient pressure variance according to the specific environment of said image display device.
In general, sound pressure level is associated with pressure variations caused by the sound waves in the air. The lowest sound pressure heard by humans is referred to as hearing threshold. In air, sound pressure can be measured by a microphone.
Image display devices may be preconfigured to apply certain predefined sound enhancement blocks being presented to the user in order for increasing the sound quality by way of enabling the user to select a sound preset. This approach does not yield completely satisfactory results for the unique reason that each of these predefined enhancement blocks basically aim to increase the sound quality for only one type of audio content.
It is to be noted that a variety of parameters play an important role in the audio performance of home based theatre systems such as location of the audio players, volume level, balance of the speakers and bass equalization.
The audio systems typically allow the user to manually set up the above-mentioned parameters through a controller on a control unit of the audio system. However, such fine-tunings and adjustment of the parameters can be complex and difficult especially for the so-called technically non-competent people as well as older persons. A typical situation which affects the sound output quality is the case where an ambient sound generated from outside makes it harder to hear the sound of the TV set. In this case, the subsequent reaction of the user could be to increase the volume to compensate the generated noise. Therefore, noticeably improper sound quality may occur and manual adjustment of the settings may be needed for the optimal sound performance, which can cause dissatisfaction for the user.
An adaptive sound pressure level (SPL) system enables the user to hear the output sound better even when an external noise interferes with the broadcast program’s sound. The adaptive sound pressure level system automatically adjusts the sound pressure level depending on the ambient pressure and background noise.
A prior art publication in the technical field of the present invention may be referred to as US2014328506, which discloses methods and systems for automatic configuration of wireless speakers. A system is described whereby a wireless speaker is configured to use an audio tone to generate a sound wave. The sound wave is received by an audio input/output device, which uses the received sound wave to generate audio information. A processor is configured to use the audio information to determine a distance between the wireless speaker and the audio input/output device, and to configure an audio parameter of the wireless speaker as a function of the distance.
The present invention provides an adaptive sound pressure level (SPL) system automatically adjusting sound performance parameters of the image display device based on ambient pressure deviations as defined by the characterizing features in Claim 1.
Primary object of the present invention is to provide an adaptive sound pressure level system for automatic optimization of the sound pressure level to output an improved audio quality at different environmental conditions with different background pressure levels in the ambient pressure.
The present invention proposes an image display device automatically effectuating sound optimization through sound pressure level adjustment by way of analyzing pressure deviances in the vicinity of said image display device.
The image display device comprises an electronic control unit in communication with a pressure meter so that the sound pressure level of the loudspeakers are adjusted depending on the ambient pressure levels as measured by said pressure meter on a continuous or periodical basis.
The pressure meter is a digital barometric pressure sensor whose readings are compared to reference values in a preloaded database in order for obtaining the corresponding voltage values to be applied to the loudspeakers.
Alternatively, the image display device can retrieve the information as to the ambient pressure by connecting to a remote server through a wide-area network (WAN) connection on a periodical basis so as to obtain the most recent ambient pressure value information based on the altitude and weather conditions of the specific location. Information as to the altitude and specific location of the image display device can be inputted by the user to be recorded by the image display device.
Accompanying drawings are given solely for the purpose of exemplifying an adaptive sound pressure level adjustment system for image display devices whose advantages over prior art were outlined above and will be explained in brief hereinafter.
The drawings are not meant to delimit the scope of protection as identified in the claims nor should they be referred to alone in an effort to interpret the scope identified in said claims without recourse to the technical disclosure in the description of the present invention.
Fig. 1 demonstrates a general flow diagram of an adaptive sound pressure level adjustment method as executed by the image display device according to the present invention.
Fig. 2 demonstrates a general flow diagram of an adaptive sound pressure level measurement and calibration method according to the present invention.
The present invention relates to an image display device such as for instance an LCD or LED TV, having an adaptive sound pressure level system (SPL) automatically effectuating sound performance optimization through sound pressure level adjustment by analyzing ambient pressure deviances in the specific environment in association with said image display device. Typically, at least one built-in loudspeaker being in electrical communication with said image display device outputs sound waves in association with the broadcast program received by the image display device.
The image display device of the invention comprises an adaptive SPL system with a pressure meter, for instance in the form of a digital barometric pressure sensor being available in the market under many trade names and finding widespread use in electronic household appliances. A digital barometric pressure sensor continuously or periodically effectuates measurement of the ambient pressure and accordingly monitors changes during regular operation of the image display device as will be delineated hereinafter.
The image display device typically comprises an electronic control unit to adjust and control the sound pressure level of the loudspeakers. The pressure meter provides real-time data so as to be processed by the electronic control unit to drive said loudspeakers.
An internal memory unit of the image display device stores operational data and includes a database of pressure levels. Said database comprises corresponding voltage values for individual pressure levels. The pressure value generally varies depending on the specific location and altitude of the image display device as well as the background noises in the environment. The pressure value measured by the pressure meter is compared to the reference values in the database in order for obtaining the corresponding voltage values to be applied on the loudspeakers for an optimized audio quality during operation of the image display device.
In the case the ambient pressure level fluctuates during the day due to different atmospheric conditions, i.e. due to the ambient temperature or in certain cases humidity, different voltage values can be applied to the loudspeaker according to the preloaded database. The preloaded database contains various ambient pressure values associated with different voltage values to be used to drive the loudspeakers. Therefore, the preloaded internal database of the image display serves to the purpose of associating measured sound pressure levels by the image display device with different reference voltage values previously obtained during a measurement and calibration step by the manufacturer. The obtained voltage values as retrieved from the preloaded internal database provide optimization of the loudspeakers’ sound quality.
The reference values in the preloaded database are typically measured in an acoustically isolated environment at 25°C and sound pressure levels outputted by the loudspeakers as optimized according to human ear sensitivity are associated with reference electrical values. The ideal frequency response of the loudspeakers is therefore maintained. In the subsequent steps, voltage values under different ambient pressure levels are determined so as to maintain the same sound pressure levels optimized according to human ear sensitivity. Accordingly, a lookup table or database of ambient sound pressure levels and associated voltage values is obtained.
The preloaded internal database and associated data is stored in the memory unit of the image display device. The electronic control unit accordingly performs measurement of the ambient sound pressure by means of said pressure meter and retrieves from the database the necessary voltage value in order for driving the loudspeakers. The pressure measured by the pressure meter during the regular operation of the image display device is compared with the values in the database and the voltage corresponding to the specific pressure level being measured is applied to the loudspeaker in order to optimize the sound pressure level by way of decreasing or increasing the applied voltage.
It is to be noted that the ambient pressure may fluctuate depending on the atmospheric conditions such that a first measurement and a second subsequent measurement by the pressure meter may present different results so as to influence the viewing experience of the user unless voltage calibration is performed. In order for obtaining a continuously comfortable sound level in terms of the quality of the viewing experience and without requiring any user intervention, the image display device therefore uses the internal database to dynamically recalibrate the driving voltage of the loudspeakers.
Therefore, change of the TV set sound level by the user due to pressure variations in the surrounding of the image display device is avoided by dynamically adapting the applied voltage to the ambient pressure level. To this end, the image display device takes measurements, preferably each time it is turned on and on a continuous or periodical basis. Dynamically varied voltage values to obtain different loudspeaker sound pressure levels provide an automatically improved sound quality for the image display device during its operation.
The information as to the ambient pressure may be alternatively or additionally obtained by the image display device through connecting to a remote server via Internet and retrieving the required information based on the altitude and weather conditions of the specific location. The obtained data may directly contain specific voltage values or may alternatively contain a look-up table of location-based pressure level values so that the image display device can itself determine the respective voltage values through the internal database. Information as to the altitude and specific location of the image display device can be inputted by the user to be recorded by the image display device.
The present invention further provides adaptation of the sound volume (intensity) by adjusting audio output of said image display device conventionally by strengthening or weakening the energy of specific frequency bands. Additionally, it is possible to support the adaptation of the sound level by changing equalizer presets, typically altering the frequency response of the audio system, in which case the image display device’s audio system adjusts the gain at a certain frequency band.
In summary, the present invention proposes an image display device comprising at least one loudspeaker and an adaptive sound pressure level adjustment system automatically effectuating sound optimization through sound pressure level adjustment by way of analyzing pressure deviances in the surrounding of said image display device
In one embodiment of the invention, said adaptive sound pressure level adjustment system comprises an electronic control unit to adjust and control the sound pressure level of said at least one loudspeaker in accordance with ambient pressure level measured by a pressure meter of the image display device.
In a further embodiment of the invention, the pressure meter provides real-time data so as to be processed by the electronic control unit to drive said at least one loudspeaker.
In a further embodiment of the invention, an internal memory unit of the image display device stores operational data in the form of a database of pressure levels associated with corresponding voltage values.
In a further embodiment of the invention, the pressure meter is a digital barometric pressure sensor.
In a further embodiment of the invention, the digital barometric pressure sensor continuously or periodically effectuates measurement of the ambient pressure.
In a further embodiment of the invention, the pressure value measured by the digital barometric pressure sensor is compared to the reference values in the database in order for obtaining the corresponding voltage values to be applied to the at least one loudspeaker.
In a further embodiment of the invention, the electronic control unit of the image display device provides that the digital barometric pressure sensor takes pressure measurements each time the image display device is turned on.
In a further embodiment of the invention, the information as to the ambient pressure is obtained by the image display device through connecting to a remote server via a network connection/computer network.
In a further embodiment of the invention, the image display device retrieves the ambient pressure value information based on the altitude and weather conditions of the specific location.
In a further embodiment of the invention, the image display device updates the location-based ambient pressure value information on a periodical basis.
The automatic adjustment of the sound pressure level by way of increasing and decreasing the applied voltage through the adaptive SPL system ensures a more pleasant viewing experience on the part of users due to the improved sound quality. The adaptive SPL system eliminates the adverse effects of pressure fluctuations on the sound quality and ensures that the sound level set by the user remains constant, thereby preventing the user from turning the volume up or down during television viewing.

Claims (10)

  1. An image display device comprising at least one loudspeaker and an adaptive sound pressure level adjustment system automatically effectuating sound optimization through sound pressure level adjustment by way of analyzing pressure deviances in the surrounding of said image display device, characterized in that
    said adaptive sound pressure level adjustment system comprises an electronic control unit to adjust and control the sound pressure level of at least one loudspeaker in accordance with ambient pressure level measured by a pressure meter of the image display device.
  2. An image display device as in Claim 1, characterized in that the pressure meter provides real-time data so as to be processed by the electronic control unit to drive at least one loudspeaker.
  3. An image display device as in Claim 2, characterized in that an internal memory unit of the image display device stores operational data in the form of a database of pressure levels associated with corresponding voltage values.
  4. An image display device as in Claim 1, 2 or 3, characterized in that the pressure meter is a digital barometric pressure sensor.
  5. An image display device as in Claim 4, characterized in that the digital barometric pressure sensor continuously or periodically effectuates measurement of the ambient pressure.
  6. An image display device as in Claim 3 or 5, characterized in that the pressure value measured by the digital barometric pressure sensor is compared to the reference values in the database in order for obtaining the corresponding voltage values to be applied to the at least one loudspeaker.
  7. An image display device as in Claim 5, characterized in that the electronic control unit of the image display device provides that the digital barometric pressure sensor takes pressure measurements each time the image display device is turned on.
  8. An image display device as in Claim 1, characterized in that the information as to the ambient pressure is obtained by the image display device through connecting to a remote server via a network connection.
  9. An image display device as in Claim 8, characterized in that the image display device retrieves the ambient pressure value information based on the altitude and weather conditions of the specific location.
  10. An image display device as in Claim 9, characterized in that the image display device updates the location-based ambient pressure value information on a periodical basis.
PCT/EP2015/065486 2015-07-07 2015-07-07 Image display device with adaptive sound pressure level adjustment function Ceased WO2017005302A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/065486 WO2017005302A1 (en) 2015-07-07 2015-07-07 Image display device with adaptive sound pressure level adjustment function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/065486 WO2017005302A1 (en) 2015-07-07 2015-07-07 Image display device with adaptive sound pressure level adjustment function

Publications (1)

Publication Number Publication Date
WO2017005302A1 true WO2017005302A1 (en) 2017-01-12

Family

ID=53514191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/065486 Ceased WO2017005302A1 (en) 2015-07-07 2015-07-07 Image display device with adaptive sound pressure level adjustment function

Country Status (1)

Country Link
WO (1) WO2017005302A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10797669B2 (en) 2018-01-08 2020-10-06 Federal Signal Corporation Speaker with automatic volume control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040240698A1 (en) * 2003-05-30 2004-12-02 Eaton William Chris Reverse mounted micro-speaker assemblies and mobile terminals including the same
US20130195299A1 (en) * 2012-01-30 2013-08-01 Etymotic Research, Inc. Hearing testing probe with integrated temperature and humidity sensors and active temperature control
US8588432B1 (en) * 2012-10-12 2013-11-19 Jeffrey Franklin Simon Apparatus and method for authorizing reproduction and controlling of program transmissions at locations distant from the program source
US20140328506A1 (en) 2007-09-24 2014-11-06 Aliphcom Methods and systems to provide automatic configuration of wireless speakers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040240698A1 (en) * 2003-05-30 2004-12-02 Eaton William Chris Reverse mounted micro-speaker assemblies and mobile terminals including the same
US20140328506A1 (en) 2007-09-24 2014-11-06 Aliphcom Methods and systems to provide automatic configuration of wireless speakers
US20130195299A1 (en) * 2012-01-30 2013-08-01 Etymotic Research, Inc. Hearing testing probe with integrated temperature and humidity sensors and active temperature control
US8588432B1 (en) * 2012-10-12 2013-11-19 Jeffrey Franklin Simon Apparatus and method for authorizing reproduction and controlling of program transmissions at locations distant from the program source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10797669B2 (en) 2018-01-08 2020-10-06 Federal Signal Corporation Speaker with automatic volume control
US11533035B2 (en) 2018-01-08 2022-12-20 Federal Signal Corporation Speaker with automatic volume control

Similar Documents

Publication Publication Date Title
US10015603B2 (en) Transferring acoustic performance between two devices
CN104798301B (en) audio loudness control system
US8085952B2 (en) Combination equalizer and calibrator circuit assembly for audio system
KR102505773B1 (en) Multi-band limiter mode and noise compensation method
US8654999B2 (en) System and method of progressive hearing device adjustment
JP7264816B2 (en) SOUND OUTPUT DEVICE AND CONTROL METHOD THEREOF
US9859858B2 (en) Correction of unknown audio content
US20110002471A1 (en) Systems and methods for transducer calibration and tuning
US20090274322A1 (en) Volume Control Apparatus and Method
US20120014538A1 (en) Audio equipment and a control method thereof
AU2016100861A4 (en) A customisable personal sound delivery system
US20190313196A1 (en) Method to acquire preferred dynamic range function for speech enhancement
CN110753295B (en) Calibration method for customizable personal sound delivery system
WO2017005302A1 (en) Image display device with adaptive sound pressure level adjustment function
KR101959956B1 (en) One-stop hearing aid fitting system
US20210141595A1 (en) Calibration Method for Customizable Personal Sound Delivery Systems
JP7252893B2 (en) SOUND MANAGEMENT METHOD AND SYSTEM
US9179238B2 (en) Application software and method for automatically adjusting environmental frequency response
WO2024211045A1 (en) Systems and methods for applying equal-loudness correction
US10271155B2 (en) Audio playing system
KR20200074599A (en) Electronic device and control method thereof
TWI594233B (en) Sound adjustment device for hearing protection and sound adjustment method thereof
JP2016010048A (en) Audio signal adjustment circuit
CN112416286B (en) Method for controlling sound output of hearing device
CN120913587A (en) Audio processing method, system, electronic equipment and storage medium

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15734397

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15734397

Country of ref document: EP

Kind code of ref document: A1