Classifications

• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F3/00—Input 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
  • G06F3/16—Sound input; Sound output
  • G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R27/00—Public address systems
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/12—Audiometering
  • A61B5/121—Audiometering evaluating hearing capacity
  • A61B5/125—Audiometering evaluating hearing capacity objective methods
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F3/00—Input 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
  • G06F3/16—Sound input; Sound output
  • G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
  • H04L65/60—Network streaming of media packets
  • H04L65/75—Media network packet handling
  • H04L65/762—Media network packet handling at the source 
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L67/00—Network arrangements or protocols for supporting network services or applications
  • H04L67/2866—Architectures; Arrangements
  • H04L67/30—Profiles
  • H04L67/306—User profiles
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R27/00—Public address systems
  • H04R27/02—Amplifying systems for the deaf
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R3/00—Circuits for transducers, loudspeakers or microphones
  • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
  • H04R2205/041—Adaptation of stereophonic signal reproduction for the hearing impaired
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
  • H04R2499/10—General applications
  • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

• the present invention relates to a music listening optimization system for several devices connected to a multimedia server.
• the invention relates to all connected devices capable of transmitting an audio stream from a network and more particularly the devices connected to the Internet such as SmartPhone, connected car radios of automobiles, touch tablets and connected televisions.
• the invention relates to the field of telecommunications and more particularly the electronic equipment for accessing the Internet that carries out the transmission of audio content from a multimedia server.
• State of the art
• the rendering qualities vary greatly between two types of terminals, for example between a smartphone having a simple speaker operating on a single audio channel and an audio system having a home theater device. It is thus particularly difficult to regulate the same way all connected equipment to emit an audio stream according to its convenience.
• the present invention aims to remedy these drawbacks by proposing a musical listening optimization system for controlling all types of connected devices capable of transmitting an audio stream.
• the invention relates to a musical listening optimization system comprising a multimedia server controlled by a user, said
• 20 multimedia server comprising means for transmitting an audio stream on various connected devices provided with acoustic transmission means, means for selecting at least one connected device to which said audio stream is transmitted, a predetermined table of characteristics connecting said different connected devices with a measure of their capabilities
• Acoustic reproduction a predetermined user table connecting at least one user with his hearing capabilities, and means for adapting said audio stream according to the measurement of the sound reproduction capabilities of the connected apparatus to which said audio stream is transmitted and according to the hearing capabilities of the user connected to said server
• the invention thus makes it possible to control all types of connected devices capable of transmitting an audio stream by adapting the audio stream both to the apparatus on which the audio stream is transmitted and by adapting the audio stream to the user according to his hearing abilities.
• the rendering of the sound felt by a given user is thus greatly improved compared to existing devices.
• the sound reproduction can also be adapted according to the preferences of the user. For example, when the audio stream emits music whose rhythmic base is quiet, the user may prefer to reinforce the treble listening.
• said multimedia server also comprises means for transmitting a video stream associated with said audio stream. This embodiment makes it possible to associate a video stream with the audio stream.
• the video stream may include processing adapted to the device on which the video stream is transmitted and / or treatments associated with the preferences or capabilities of the user.
• said multimedia server comprises a control interface that can be used from at least one of the different connected devices, the control interface being able to provide information on the connected user.
• said predetermined table of characteristics is filled in during a step of installing a connected device as a function of the response of the acoustic emission means to different stimuli.
• This embodiment makes it possible to know the playback characteristics of the connected device very quickly by using a microphone and by analyzing the sound reproduced and recorded.
• the predetermined feature table may have multiple behaviors as a function of the ambient noise level.
• the means for adapting the audio stream comprise several series connected RM type filters whose characteristics are adjusted according to the measurement of the capacitances of acoustic reproduction of the connected apparatus to which said audio stream is transmitted.
• said predetermined user table is filled in during a step of defining the hearing capabilities of a user at several predetermined characteristic frequencies.
• This embodiment makes it possible to estimate the hearing capabilities of a user according to the known methods used by the otorhinolaryngologist.es.
• the predetermined user table may have several measurements depending on the ambient noise level.
• the means for adapting the audio stream comprise several bandpass filters whose bandwidths are juxtaposed frequently on the spectrum of the audio stream, the number of bandpass filters corresponding to the number of characteristic frequencies and the gain of the bandpass filters being adjusted according to the hearing capabilities
• the system comprises means for self-diagnosis of the user's hearing capabilities from a connected apparatus by means of listening by the user, for each characteristic frequency, of a sinusoidal signal whose the frequency is equal to the characteristic frequency and whose evolution of the gain makes it possible to determine a detection threshold below which the user is no longer able to hear the transmitted signal.
• This embodiment makes it easier to measure the user's hearing capabilities.
• the measurement of the hearing capabilities varies between -40 dB and + 40 dB for each predetermined characteristic frequency.
• This embodiment limits the measurement band of the hearing capabilities so that it is contained in the amplitude of a conventional 96dB digital audio stream (16-bit quantization).
• the characteristic frequencies are 125
• Figure 1 illustrates a musical listening optimization system according to the invention
• Figure 2 illustrates the elements of the multimedia server of the optimization system of Figure 1;
• FIG. 3 illustrates the means for adapting the audio stream of the multimedia server of FIG. 2.
• FIG. 1 illustrates a music listening optimization system 10 for several connected devices 15-19 to a multimedia server 11.
• the multimedia server 1 1 is implanted in a cloud 13 (better known under the name of "Cloud” in the English literature) and comprises means 12 for transmitting at least one audio stream 14 with the connected devices 15-19 .
• the media server 11 may stream music to a satellite connected device to the Internet.
• the transmission means 12 may be of any known type.
• the audio stream 14 is not necessarily stored on the multimedia server 11 and can be delivered by another server communicating with the multimedia server 11.
• the connected devices 15-19 can be of any known type capable of broadcasting an audio stream 14.
• the system 10 comprises a Smartphone 15 equipped with a single-channel acoustic emission means 21, a touch pad 16 provided with a single-channel acoustic transmission means 22, a connected television 17 provided with a bi-channel acoustic transmission means 23, a home theater device 18 provided with a means acoustic emission 24 type 4.1 and a car radio 19 of a motor vehicle equipped with a bi-channel acoustic emission means 25.
• the multimedia server 1 1 comprises means 27 for selecting at least one connected device 15-19 and means 50 for adapting the audio stream 14 transmitted to the selected connected apparatus 15-19.
• the selection means 27 are made by a control interface on which the digital tablet 16 is connected.
• This control interface can be carried out by an application carried on at least one connected device 15-19 or by a secure internet page.
• the touch pad 16 and the car radio 19 being connected to the Internet, the car radio 19 is selected by the touch pad 16 and the audio stream 14 is transmitted to the car radio 19.
• the control interface is used to identify the user 36-39 and to adjust certain parameters of the transmitted audio stream 14.
• the control interface may allow the user 36-39 to select several different predetermined atmospheres by deforming the original audio stream 20.
• the media server 11 also includes a predetermined table of features 30 and a predetermined user table 35 shown in FIG. 2.
• the predetermined table of features 30 enables the various connected devices 15-19 to be associated with a measure of their capabilities. sound reproduction 31 -34.
• the predetermined table of characteristics 30 is indicated during a step of installing a connected device 15-19 as a function of the response of the acoustic emission means 21 -25 to different stimuli. To do this, at least one microphone is installed near the acoustic emission means 21-25. In the case of
• the predetermined feature table 30 is in the form of a vector associated with each connected device 15-19. This vector represents attenuation measured at different frequencies.
• the predetermined feature table 30 may include a plurality of matrix vectors, each of which represents the measured attenuation. in a particular environment, for example depending on the ambient noise level.
• the predetermined user table 35 is entered during a step of defining the hearing capabilities 41-44 of a user 36-39 at a plurality of predetermined characteristic frequencies: 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1 KHz, 1.5 KHz, 2 KHz and 3 KHz.
• user 36-39 can go to an otolaryngologist or perform a self-diagnosis from a connected device 15-19.
• the measurement performed in an otolaryngologist has the advantage of using calibrated measuring devices and the self-diagnostic measurement makes it possible to perform a relative measurement taking into account the acoustic reproduction capacities 31 -34 of the connected device. -19 on which the measurement is performed.
• an application allows the user to listen, for each characteristic frequency, a sinusoidal signal whose frequency is equal to the characteristic frequency and whose
• the predetermined user table 35 is in the form of a vector associated with each user 36-39 whose values vary between -40 dB and + 40 dB. This vector represents the hearing abilities
• the predetermined user table 35 may comprise a plurality of matrix vectors, each of which represents the hearing capabilities 41-44 of a user 36-39 at a plurality of predetermined characteristic frequencies, for example depending on the level of the user. ambient noise.
• the adaptation means 50 between the original audio stream 20 and the transmitted audio stream 14 are described in FIG. 3 for an exemplary embodiment.
• the original stream 20 is first adapted according to the connected device 15-19 selected and then according to the hearing capabilities 41-44 of the user 36-39.
• the adaptation as a function of the selected connected apparatus 15-19 is carried out by several RM 55 type filters connected in series (for "Infinite Impulse Response filter” in the English literature corresponding to a infinite impulse response filter).
• the RM 55 filters comprise characteristics of the frequency, gain, order and bandwidth type which frequently modify the spectrum of the audio stream 14. These characteristics are adjusted according to the measurement of the acoustic reproduction capacities 31 -34 of the apparatus connected 15-19 to which said audio stream 14 is transmitted.
• the adaptation can be performed automatically by a dedicated algorithm or by a sound engineer.
• a normalization step 58 is performed.
• the normalization step 58 consists of calculating in real time the power of the audio stream 14 and automatically compensating for the volume in order to limit the saturation phenomenon.
• the adaptation according to the hearing capabilities 41-44 of the user 36-39 is performed by several bandpass filters 60 whose bandwidths are juxtaposed frequently on the spectrum of the audio stream 14.
• the bandwidth of each filter bandpass 60 is centered in logarithmic scale on each predetermined characteristic frequency.
• the bandwidth of the last band-pass filter 60 extends to half the sampling frequency of the audio stream 14.
• the gain 56 of the bandpass filters 60 is adjusted according to the measurement of the hearing capabilities 41-44 of the user 36-39.
• the gain of each bandpass filter 60 is equal to half the inverse of the measurement of the hearing capabilities 41-44 of the user 36-39 but, alternatively, the ratio may be different.
• the signal at the output of each bandpass filter 60 is injected into an adder 62 to restore the signal as a whole and then a normalization step 63 is performed.
• the normalization step 63 consists of calculating in real time the power of the audio stream 14 and automatically compensating for the volume in order to limit the saturation phenomenon.
• the invention thus makes it possible to optimize the musical listening according to the selected connected device 15-19 and the hearing capabilities 41-44 of the user 36-39. The rendering of the sound felt by a given user is thus greatly improved compared to existing devices.
• other adaptations of the audio stream 14 can be made. For example, when the audio stream emits music whose rhythmic base is quiet the user may prefer to reinforce the listening of treble.
• a video stream may be associated with the audio stream 14 and the system 5 may implement means for adapting the video stream depending on the connected device 15-19 or the visual capabilities of the user 36-39 .
• the video stream can be processed by increasing the colors and reducing the number of pixels to fit the resolution of a smartphone.
• the invention can also be implemented on service automats such as cash dispensers or highway tolls, in order to adapt the communication of the PLC to the user.
• the smart card in the case of a ticket dispenser, may contain a means of obtaining the hearing capabilities of the user of the smart card to adapt the instructions to the hearing capabilities of the card reader. 'user.
• a motorway toll subscription device may contain the user's hearing capabilities. The invention thus makes it possible to limit the use of electronic devices to improve the hearing of persons by transferring auditory corrections to the automata with which they are to interact.

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• Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Physics & Mathematics (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Life Sciences & Earth Sciences (AREA)
• Audiology, Speech & Language Pathology (AREA)
• Acoustics & Sound (AREA)
• General Health & Medical Sciences (AREA)
• Computer Networks & Wireless Communication (AREA)
• Theoretical Computer Science (AREA)
• Otolaryngology (AREA)
• Heart & Thoracic Surgery (AREA)
• Veterinary Medicine (AREA)
• Molecular Biology (AREA)
• Surgery (AREA)
• Animal Behavior & Ethology (AREA)
• Biomedical Technology (AREA)
• Public Health (AREA)
• Medical Informatics (AREA)
• Pathology (AREA)
• Biophysics (AREA)
• General Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Human Computer Interaction (AREA)
• Circuit For Audible Band Transducer (AREA)

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• 2013
  • 2013-12-30 FR FR1363670A patent/FR3016105B1/fr active Active
• 2014
  • 2014-12-19 US US15/108,567 patent/US10175934B2/en active Active
  • 2014-12-19 EP EP14815385.1A patent/EP3090572A1/de not_active Ceased
  • 2014-12-19 WO PCT/EP2014/078874 patent/WO2015101534A1/fr active Application Filing
  • 2014-12-19 KR KR1020167020600A patent/KR20160104665A/ko not_active Application Discontinuation

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