EP1816892B1 - Procédé et appareil pour la protection auditive des utilisateurs de téléphones - Google Patents

Procédé et appareil pour la protection auditive des utilisateurs de téléphones Download PDF

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Publication number
EP1816892B1
EP1816892B1 EP06101148A EP06101148A EP1816892B1 EP 1816892 B1 EP1816892 B1 EP 1816892B1 EP 06101148 A EP06101148 A EP 06101148A EP 06101148 A EP06101148 A EP 06101148A EP 1816892 B1 EP1816892 B1 EP 1816892B1
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European Patent Office
Prior art keywords
signal
exposure
long
sound
communication
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EP06101148A
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German (de)
English (en)
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EP1816892A1 (fr
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Dietmar Dr. Ruwisch
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Individual
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Individual
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Priority to AT06101148T priority Critical patent/ATE440455T1/de
Priority to DE602006008569T priority patent/DE602006008569D1/de
Priority to EP06101148A priority patent/EP1816892B1/fr
Priority to AU2007200489A priority patent/AU2007200489B2/en
Publication of EP1816892A1 publication Critical patent/EP1816892A1/fr
Priority to HK08100478.3A priority patent/HK1109828A1/xx
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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements

Definitions

  • the present invention relates to protecting the hearing of users of communication devices like a telephone and, more particularly, to methods and apparatus for monitoring and limiting the sound pressure resulting both from ambient sound and sound generated by the communication device, in particular for professional telephone users, e.g. in a call centre.
  • the sources of hazardous signals are manifold and can be divided into artificial and human-made. Artificial signals are usual tone signals. The most prominent tone hazards result from fax machines that are called by - or do call - a normal telephone, be it intentional or not. Besides fax tones there are various other tones that are liable to damage the hearing, like dial tones (DTMF) and some network control tones. Loud bangs and noise termed 'Acoustic Shocks' can also occur on the telephone network on occasions due to faults, lightning strikes and other reasons that are sufficiently loud they can cause serious hearing problems even to the extent of permanent deafness.
  • DTMF dial tones
  • Loud bangs and noise termed 'Acoustic Shocks' can also occur on the telephone network on occasions due to faults, lightning strikes and other reasons that are sufficiently loud they can cause serious hearing problems even to the extent of permanent deafness.
  • acoustic shocks are dangerous, also comparably quiet but permanent background noise is more than just annoying if the human ear is exposed to it for hours. Like shocks, such noise potentially has manifold sources.
  • An omnipresent but usually uncritical source is the network background noise; however, the increasing use of IP telephony seems to considerably increase the importance of this issue.
  • Another noise source results from the usage of hands-free telephones, especially in the car where there is permanent background noise caused by engine sound, wind, and rough surface.
  • Hands-free telephones used in an office environment also produce more noise than a conventional telephone. Due to the greater distance between microphone and speaker's mouth, environmental noise like that of a PC fan is amplified.
  • the first one is the recommendation ITU-T P.360 of the International Telecommunication Union (ITU). This directive deals with the Efficiency of devices for preventing the occurrence of excessive acoustic pressure by telephone receivers, i.e. it is specific for telephone-and headset design.
  • the second one is the Directive 2003 / 10 / EC of the European Parliament and of the Council of 6 February 2003 on the minimum health and safety requirements regarding the exposure of workers to the risk arising from physical agents (noise).
  • This directive becomes mandatory in April 2006 and is more general about hearing protection of persons working in loud ambient conditions. Although a call centre agent usually would not be suspected of working in loud ambient conditions, all criteria of this directive apply to telephone users, with the only difference that it is primarily not only ambient noise that jeopardizes the hearing, but also noise received from the telephone.
  • ITU-T P.360 recommendation gives detailed rules of calculating the limits of acoustic sound pressure levels. For the reasons explained above the limits applicable to headsets are lower than those valid for handsets. The recommendation distinguishes between short disturbances (referred to as shock signals in what follows) and longer disturbances.
  • the relevant physical measure is sound energy, i.e. if a disturbance is half as loud as another one, its signal power may be twice for to reach the same limit as the first disturbance. Longer disturbances are measured in the dBPa(A)-scale, while there is no frequency weighting for short disturbances.
  • the directive says that means for hearing protection shall be made available to a user.
  • a telephone with means for hearing protection should be used. Whilst non-exceedance of the P peak limits can be guaranteed quite easily by ensuring a sufficiently low volume of the telephone, L EX,8h monitoring is much more complex because it incorporates cumulative exposure calculations.
  • DE 10 2004 016184 A1 discloses a method and an apparatus to prevent hearing damage.
  • An electrical input signal is fed to headphones via a control circuit.
  • the control circuit calculates the sound level of the electrical input signal and the corresponding sound dosage for a given time period. If the sound dosage exceeds a first limit value, the level of the electrical input signal is attenuated to avoid exceeding a second, higher limit value.
  • the attenuated electrical input signal is output to the user via the headphone.
  • a method for protecting the hearing of a user using a communication device which comprises the steps of transforming an acoustic ambient signal into an input signal, receiving a communication signal, updating a long-time noise signal exposure for said input signal, updating a long-time sound signal exposure for said communication signal, calculating a total sound exposure as the sum of said long-time sound signal exposure and said long-time noise signal exposure, generating an output signal from said communication signal, wherein the output signal level is attenuated if said total sound exposure exceeds an upper action value, and transforming said output signal into an acoustic sound signal.
  • the present invention further provides a communication device for protecting the hearing of a user which comprises at least one first microphone adapted to transform an acoustic ambient signal into an input signal, a speaker adapted to transform an output signal into an acoustic sound pressure, a communication interface adapted to receive a communication signal, and a processing unit operatively connected to said first microphone and said communication interface for receiving said input signal and said communication signal, adapted to calculate a total sound exposure as the sum of the long-time sound signal exposure of said communication signal and the long-time noise signal exposure of said input signal, and further operatively connected to said speaker and adapted to generate said output signal from said communication signal, wherein the output signal level is attenuated if said total sound exposure exceeds an upper action value.
  • the method and communication device it is possible to monitor and eventually reduce the output sound pressure and thus the output volume in case there is a danger for the hearing of the user according to the total sound exposure to the user taking both the long-time noise signal exposure of ambient signals from the environment of the user as well as the long-time sound signal exposure of the communication signal like a telephone signal received over a telephone network from a remote terminal into account.
  • the ambient noise level is monitored and added to the sound pressure produced by the telephone headset/handset for calculating exposure action or limiting values.
  • a kind of a measuring microphone, or at least a setup option of the telephone defining a typical ambient noise exposure is provided.
  • the communication device may not only perform Noise-, Tone- and Shock-Elimination, but also sound pressure monitoring, i.e. the telephone should calculate the L Ex,8h during usage, and eventually reduce the output volume in case there is the danger of exceeding the limit value of L EX,8h . Since different headphones produce different sound pressure out of the same voltage level, the user should not be totally free to use any headset he likes. Headsets should be approved by the telephone manufacturer. According to an aspect of the present invention, a calibration of the headphone volume of approved headsets is provided, since otherwise compliance with the regulations cannot be guaranteed.
  • the monitor For the same reason it is according to the present invention mandatory to integrate the monitor into the communication device like a telephone, the headset or a processing unit like a PC operatively linked to the telephone and not into a black box between line and telephone.
  • the headset In the latter approach besides the headset there is also the unknown telephone that would make it very difficult to get reliable measures. Otherwise, to be safe, such a black box approach would have to align with the loudest possible telephone and headset, with the consequence that if equipment with lower volume is used the sound pressure measure might be dramatically overestimated and the system would reduce the volume far too early resulting in an unusable configuration.
  • noise reduction, shock and tone elimination from the received communication signal implemented by respective method steps as defined by dependent claims 4 and 5 or respective signal processing components of said communication device.
  • a warning indicator which is activated when said total sound exposure exceeds a lower action value which is lower than the upper action value.
  • the warning indicator may be implemented in the telephone itself or as a software tool providing respective display messages like "Attention: Sound or Noise Exposure! on a computer (PC) of the user when activated.
  • PC computer
  • the invention provides a computer program and a computer program product as recited in claims 9 and 10.
  • the invention in yet another aspect, provides a system for processing sound and/or ambient noise signals as recited in claim 11.
  • the present invention relates to improved approaches to monitor and, if necessary, attenuate or disable output signals of communication devices like telephones.
  • telephones are described that are equipped with a headset worn by the user.
  • the telephone is equipped with a handset or itself functions as a handset like a mobile terminal or a mobile phone.
  • Fig. 1 shows a block diagram of a first embodiment of a communication device according to the present invention.
  • the communication device is a telephone 100 comprising the telephone terminal 10 and a headset 20 connected to the telephone apparatus 10 via a cable 35.
  • the Headset to be used by the user comprises a headset microphone 25 and earphone or speaker 30 for outputting the output signal by means of an acoustic sound pressure to the ear of the user.
  • the telephone terminal comprises, according to an embodiment, a microphone 15 for transforming the acoustic ambient signals into input signals, a preferably battery powered real-time clock 40, a memory 60, a light emitting diode (LED) 70 as warning indicator and a communication interface 90 all operatively connected to a processing unit 50 implemented by a digital signal processor (DSP) 50.
  • the communication interface 90 may be implemented as a simple plug or socket for the telephone line 95 connected to the telephone network, a radio interface of a mobile network or the like.
  • step 210 the communication signal which is the receive signal from the telephone line is received over communication interface 90 by the telephone 10.
  • noise reduction as well as tone and shock elimination techniques are applied in steps 220 and 230 to the communication signal as will be described in more detail with reference to Fig. 3 .
  • the acoustic ambient signal which is also referred to as ambient noise signal is recorded and transformed into the input signal by microphone 15 (also called measuring microphone) in step 250.
  • a long-time signal exposure in steps 240 and 260 over a certain time window (long-time noise signal exposure for the input signals and long-time sound signal exposure for the communication signal) and preferably stored in a memory 60.
  • These long-time signal exposures are then summed in step 270 to a total sound exposure representing the total sound exposure acting on the user's ear over the working hours using the real-time clock 40 of the telephone.
  • the total sound exposure is stored in the memory 60 as indicated by reference sign 65 and monitored by the DSP 50.
  • the DSP 50 also generates the output signal from the communication signal which is then transmitted to the earphone 30 for transforming into an acoustic sound signal. If the DSP 50 detects that the total sound exposure exceeds an upper action value, the level of the output signal is attenuated in order to keep the total sound exposure possibly low and thus protecting the hearing of the user.
  • PCs computers
  • an 8-hour total sound exposure is monitored by a PC 80 that is linked to the telephone 10 e.g. via USB.
  • the telephone would need neither permanent power supply nor an own internal real-time clock.
  • the PC offers good display options (not shown), e.g., for displaying a sound pressure profile corresponding to the long-time sound ands noise exposures.
  • the PC also works as the warning indicator and detailed warnings are issued by the PC either as sound warnings or as visual warnings displayed on the screen of the PC before the system is forced to reduce the output volume.
  • the communication signal will be further subject to noise reduction (step 220 in Fig. 2 ; not shown in Fig. 3 ) and tone and shock elimination (step 230 in Fig. 2 ) prior to the long-term sound pressure monitoring.
  • shock elimination is the reduction of (sudden) loud signals in order to prevent events that exceed the limit value and also the upper action value of p peak .
  • the simplest way of avoiding too loud signals is to physically limit the maximum sound pressure output of a telephone handset and headset. In digital signal processing, this is naturally the case, because the maximum voltage output level is restricted by the properties of D/A-converters. Thus, one can easily guarantee that the limit value of p peak is never exceeded as the relation between voltage level produced by the D/A-converter and corresponding sound pressure level in the used headset or headset is known an which is a general requirement also for following discussions.
  • a shock-eliminator is adapted to detect (step 330) and attenuate (step 340) sudden loud acoustic events below the limit, i.e. signals that exceed the upper or even the lower action value of p peak .
  • the shock eliminator does not require spectral domain processing and could, if there is no need for other additional algorithmic components, run on a standard microcontroller; or on the DSP 50 needed, for example, for the more complex noise reduction.
  • tones like fax or DTMF tones are perhaps the most annoying disturbances that appear in telephony, and since they are usually quite loud they easily exceed the p peak limits and thus could be seen as special sort of shock signal (although tones usually are not short).
  • the approach of removing tones is spectral-domain processing, which is more flexible and more tolerant compared to, for example, a time-domain approach using notch filters, but naturally requires a Fourier-Transformation. This allocates considerable resources of the processor and introduces a delay into the signal processing.
  • a delay may be handled by delaying the signal output itself by the time it takes to detect the tone with the drawback is the additional latency.
  • a latency of 10 ms is usually acceptable, but longer delays cause problems, especially with side tone perception. If the latency is 20 ms or more the side tone appears echoic, which is unacceptable.
  • the spectral domain processing is favourable because it allows rather versatile handling of tones: if a tone with certain frequency is detected (step 310), attenuation (step 320) is applied as long as the tone is present.
  • the attenuation value can be tone specific, if required, and frequency tolerances can be easily taken into account. In case the signal contains simultaneous speech, this will be attenuated, too.
  • noise reduction Although also shock signals and tones can be seen as noise, too, in the context of noise reduction one usually refers to noise as constant and slowly varying background sound.
  • the reduction of such background noise is more than a convenience issue: Being continuously present even at low volumes background noise considerably contributes to daily sound exposure L Ex,8h , so its reduction is as important as the elimination of tones and shocks.
  • noise reduction techniques to the communication signal comprising an internal representation of the present noise by, e.g., some kind of noise estimation. If the noise level is high (signal-to-noise ratio near 0 dB) and noise reduction is set to be rather aggressive (e.g.
  • Noise Reduction is not only a simple attenuation of the signal but a sort of subtraction of noise from speech, there is always some latency in the processed signal.
  • the latency of high quality noise reduction needs to be as low as 10 ms for the reasons stated above, and there should be an integrated approach of noise reduction with tone-elimination (and also shock-elimination), in order not to add the latencies of the single algorithms, but to build a software tool with overall latency not more than 10 ms.
  • tone-elimination and also shock-elimination
  • a telephone protecting the users hearing by means of noise, tone and shock elimination as described herein even if it works as a stand-alone telephone by using internal processing capabilities but without an internal battery powered real-time clock is regarded as a good compromise.
  • a link to a PC is required.
  • the PC 80 linked to the telephone 10 is a protection tool for the telephone user that can be used or not.
  • the PC demonstrates both to the telephone user and management that compliance with the Noise Directive is being achieved.
  • such an approach cannot ensure compliance with the 8-hour exposure limit, because the communication device is able to operate without the PC connected to the communication device.
  • a real-time clock 40 is integrated into the telephone 10.
  • the real-time clock 40 and the DSP 50 are then adapted to perform the total sound exposure calculations, update and monitor the exposure(s) and if necessary adjust the level of the output acoustic sound signal by attenuating the output signal in order to ensure the limits defined in the EU-Directive are not exceeded.
  • Fig. 4 illustrates a method according to an embodiment without the use of a PC 80.
  • the calculation is preferably carried out by the DSP 50 of the telephone.
  • the previous exposure value is fetched from memory 60 in step 410 and the present time information is determined in step 420 from real-time clock 40 in step 420.
  • the present signal energy is calculated, each from the input signal to calculate the present noise signal exposure value and from the communication signal to calculate the present sound signal exposure value by using respective calibration data in step 440.
  • Each of the long-term signal exposure values are then updated by adding the respective previous and present exposure values and storing the updated exposure value back in the memory.
  • Fig. 5 illustrates a method according to another embodiment calculating the long-term signal exposure values by means of a PC linked to the telephone.
  • the present signal energy for both the input and the communication signal is calculated by the DSP 50 of the telephone and submitted to the PC 80 in step 510.
  • the present noise signal exposure value is then calculated by the processing unit of the PC from the input signal energy and the present sound signal exposure value from the communication signal energy by using respective calibration data in step 520.
  • each of the exposure values for noise and sound are then updated in step 530 and added to get an updated total sound exposure value.
  • This updated total sound exposure value is then submitted back to the telephone in step 540 and preferably stored in memory 60 as indicated by reference sign 65.
  • the flow diagram as depicted in Fig. 6 illustrates a method according to the present invention of how the sound exposure is monitored, displayed and attenuated either by means of a PC or without PC.
  • step 610 it is determined in step 610 whether there is a PC operatively connected to the telephone and prepared to carry out the monitoring or not.
  • this option can also simply be disabled on the telephone so that monitoring is always done by the telephone.
  • a default setup monitoring is done by the telephone and if it is detected by the telephone that a PC is present and prepared to monitor the sound exposure monitoring is taken over by the PC.
  • the method branches to step 630 and the updated values for the long-time sound signal exposure and the long-time noise signal exposure as well as the total sound exposure are displayed on the screen of the PC. It is further preferred to display these values together with respective limits, e.g. according to the EU Directive.
  • the method branches to step 620 and if a lower action value is exceeded the LED 70 as warning indicator is activated by, e.g., flashing of the LED.
  • a lower action value is exceeded the LED 70 as warning indicator is activated by, e.g., flashing of the LED.
  • any other appropriate warning indicator may be used instead of the LED.
  • the telephone itself or the PC will attenuate the output signal if a upper action value is exceeded in step 640 in order to lower the sound pressure of the acoustic output signal produced by the earphone 30.
  • the upper action value is preferably a preset value that is selected to ensure that the maximum allowable sound exposure over e.g. the 8 hour working time will expect-edly not be reached.
  • the speaker or earphone will be disabled if despite the attenuation is step 640 a limit value is reached or even exceeded.
  • the upper action value should then be lowered in order to avoid the action in step 650 interrupting or even ending the use of the telephone at the current working time.
  • the disabling can be implemented by simply disabling the step of generating the output signal or switching of the earphone itself.
  • an additional microphone 15 (also called ambient noise measurement microphone) is integrated into the telephone that permanently measures the ambient noise.
  • the ambient sound level can be measured directly, if one assumes that the ambient noise is a diffuse sound field. This assumption is not completely correct, since at least one component of ambient sound is not diffuse, but produced by a single distant but nearby source: the users own voice. It comes close to a philosophical discussion whether or not the user's voice should count as contribution to ambient sound exposure, so we will neglect this effect for the sake of pragmatism. Under said assumption of background noise being a diffuse sound field a calibration is required giving the relation between the signal level of the measuring microphone and the sound pressure level caused by background noise being measured in the users ear that is covered by a headset earphone.
  • FIG. 7 the ambient noise signal measurement by means of the microphone 15 is illustrated.
  • a schematic circuit diagram 700 shows microphone 15 coupled to the DSP 50 over an analogue-digital converter (ADC) 750.
  • the ambient noise microphone signal is transformed into the input signal and measured by the ADC 750 as voltage U N in step 710.
  • the DSP 50 then calculates a resulting sound level for the input signal produced by the earphone 30 using calibration data in step 720.
  • the microphone of the headset (headset microphone) 25 itself for the measurement of the ambient noise.
  • This approach has the advantage that no additional ambient noise measurement microphone is needed. However, it then has to be taken into account that the microphone gain of the used headset is not a priori know, resulting in a calibration need for the microphone gain of the approved headsets (in addition to the independent calibration of the earphone volume calibration discussed above).
  • This approach further requires distinction between speech signals and background noise, because the speaker's mouth is so close to the microphone that the user's speech would otherwise be dramatically overestimated in its contribution to the total ambient sound exposure. Said distinction is made by means of an approach according to an embodiment as illustrated in the flow diagram of Fig. 8 .
  • step 810 first the headset microphone signal is used as input signal. Human speech is not completely continuous; there are short breaks where only background sound is present, so the minima of the microphone signal is tracked being a good estimate of the background sound (or ambient noise signal) level in step 820.
  • the method would define the user's own voice not to be a contribution to ambient noise exposure. As stated before, whether to do so or not is not really relevant; none of the regulations attribute any importance to this detail.
  • step 830 again it is then calculated the resulting sound level for the input signal produced by the earphone 30 using calibration data.
  • methods, systems and hearing aid devices described herein are implemented in a telephone or on any other signal processing devices suitable for the same, such as, e.g., digital signal processors, analogue/digital signal processing systems including field programmable gate arrays (FPGA), standard processors, or application specific signal processors (ASSP or ASIC).
  • digital signal processors analogue/digital signal processing systems including field programmable gate arrays (FPGA), standard processors, or application specific signal processors (ASSP or ASIC).
  • FPGA field programmable gate arrays
  • ASSP application specific signal processors
  • the invention is implemented in a computer program containing executable program code.
  • the program code may be stored in a memory of a telephone or any other telecommunication terminal or a computer memory of a PC operatively connected to a telephone and executed by the telephone itself or any processing unit like the CPU of the PC or by any other suitable processor, DSP or computing element executing a method according to the described embodiments.
  • the computer program may be embodied by a computer program product like a floppy disk, a CD-ROM, a memory stick or any other suitable memory medium for storing program code.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Meter Arrangements (AREA)

Claims (19)

  1. Procédé destiné à protéger le système auditif d'un utilisateur en utilisant un dispositif de communication, comportant les étapes ci-dessous consistant à :
    - transformer un signal ambiant acoustique en un signal d'entrée ;
    - recevoir un signal de communication ;
    - mettre à jour une exposition durable à un signal de bruit pour ledit signal d'entrée ;
    - mettre à jour une exposition durable à un signal sonore pour ledit signal de communication ;
    - calculer une exposition sonore totale en tant que la somme de ladite exposition durable à un signal sonore et de ladite exposition durable à un signal de bruit ;
    - générer un signal de sortie à partir dudit signal de communication, dans lequel le niveau du signal de sortie est atténué si ladite exposition sonore totale dépasse une valeur d'action supérieure ; et
    - transformer ledit signal de sortie en une pression sonore acoustique.
  2. Procédé selon la revendication 1, comportant en outre l'étape ci-dessous consistant à :
    - activer un indicateur d'avertissement lorsque ladite exposition sonore totale dépasse une valeur d'action inférieure qui est plus faible que ladite valeur d'action supérieure.
  3. Procédé selon la revendication 1 ou 2, comportant en outre l'étape consistant à :
    - désactiver ladite étape de transformation lorsque ladite exposition sonore totale dépasse une valeur limite qui est plus élevée que ladite valeur d'action supérieure.
  4. Procédé selon l'une quelconque des revendications précédentes, comportant en outre l'étape consistant à appliquer une réduction du bruit audit signal de communication avant ladite mise à jour de ladite exposition durable à un signal sonore.
  5. Procédé selon l'une quelconque des revendications précédentes, comportant en outre l'étape consistant à appliquer une élimination de choc ou de son audit signal de communication avant ladite étape de mise à jour de ladite exposition durable à un signal sonore.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel lesdites étapes de mise à jour desdites expositions durables à des signaux comportent chacune les étapes consistant à :
    - délivrer ladite exposition durable à des signaux en tant qu'une valeur d'exposition précédente ;
    - déterminer une information de temps en cours ;
    - calculer une énergie de signal en cours à partir de ladite information de temps en cours et un niveau de signal respectif dudit signal de communication ou signal d'entrée ;
    - calculer une valeur d'exposition en cours à partir de ladite énergie de signal en cours en utilisant des données d'étalonnage ;
    - mettre à jour ladite exposition durable à des signaux respective en additionnant lesdites valeurs d'exposition précédente et en cours respectives.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel ledit dispositif de communication est un téléphone comportant un casque d'écoute porté par ledit utilisateur et dans lequel ledit signal d'entrée est transformé par un microphone de casque d'écoute et ladite pression sonore acoustique est transformée par un écouteur dudit casque d'écoute, et dans lequel ladite étape de mise à jour de ladite exposition durable à un signal de bruit comprend en outre l'étape consistant à suivre le minima dudit signal d'entrée en tant qu'un signal de bruit ambiant et l'étape consistant à calculer ladite exposition durable au bruit en calculant un niveau de signal d'entrée sur la base dudit signal de bruit ambiant et des données d'étalonnage.
  8. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel ledit dispositif de communication est un téléphone comportant un casque d'écoute porté par ledit utilisateur, et dans lequel ledit signal d'entrée est transformé par un microphone disposé à distance d'un microphone de casque d'écoute et ladite pression sonore acoustique est transformée par un écouteur dudit casque d'écoute, et dans lequel ladite étape de mise à jour de ladite exposition durable à un signal de bruit comprend en outre l'étape consistant à calculer ladite exposition durable au bruit en calculant une niveau de signal d'entrée sur la base dudit signal d'entrée et des données d'étalonnage.
  9. Programme informatique contenant un code de programme exécutable lequel, lorsqu'il est exécuté sur un ordinateur, exécute un procédé selon l'une quelconque des revendications 1 à 8.
  10. Produit-programme informatique, contenant un code de programme exécutable lequel, lorsqu'il est exécuté sur un ordinateur, exécute un procédé selon l'une quelconque des revendications 1 à 8.
  11. Système de traitement de signaux de bruit ambiant ou sonores comprenant des moyens permettant de mettre en oeuvre un procédé selon l'une des revendications 1 à 8.
  12. Dispositif de communication destiné à protéger le système auditif d'un utilisateur, comprenant :
    - au moins un premier microphone apte à transformer un signal ambiant acoustique en un signal d'entrée ;
    - un haut-parleur apte à transformer un signal de sortie en une pression sonore acoustique ;
    - une interface de communication apte à recevoir un signal de communication ;
    - une unité de traitement connectée de manière opérationnelle audit premier microphone et à ladite interface de communication pour recevoir ledit signal d'entrée et ledit signal de communication, apte à calculer une exposition sonore totale en tant que la somme d'une exposition durable à un signal sonore dudit signal de communication et d'une exposition durable à un signal de bruit dudit signal d'entrée, et en outre connectée de manière opérationnelle audit haut-parleur et apte à générer ledit signal de sortie à partir dudit signal de communication, dans lequel le niveau du signal de sortie est atténué si ladite exposition sonore totale dépasse une valeur d'action supérieure.
  13. Dispositif de communication selon la revendication 12, comprenant en outre une unité d'horloge qui est apte à mesurer un temps d'utilisation dudit dispositif de communication par ledit utilisateur, et dans lequel ladite exposition sonore totale est calculée sur ledit temps d'utilisation.
  14. Dispositif de communication selon la revendication 12 ou 13, comprenant en outre une unité de mémoire connectée de manière opérationnelle audit dispositif de traitement, et dans lequel ladite unité de mémoire est en outre apte à stocker ladite exposition sonore totale pour tous les utilisateurs sur ledit temps d'utilisation.
  15. Dispositif de communication selon l'une quelconque des revendications 12 à 14, comprenant en outre un indicateur avertisseur connecté de manière opérationnelle à ladite unité de traitement ou à ladite unité de mémoire, et dans lequel ledit indicateur d' avertissement est activé lorsque ladite exposition sonore totale dépasse une valeur d'action inférieure qui est plus faible que ladite valeur d'action supérieure.
  16. Dispositif de communication selon l'une quelconque des revendications 12 à 15, dans lequel ladite unité de traitement est apte à désactiver ledit haut-parleur lorsque ladite exposition sonore totale dépasse une valeur limite qui est plus élevée que ladite valeur d'action supérieure.
  17. Dispositif de communication selon l'une quelconque des revendications 12 à 16, dans lequel ledit dispositif de communication est un téléphone comportant un casque d'écoute porté par ledit utilisateur et dans lequel ledit premier microphone est un microphone de casque d'écoute et ledit haut-parleur est un écouteur dudit casque d'écoute, et dans lequel ladite unité de traitement est apte à calculer ladite exposition durable à un signal de bruit dudit signal d'entrée en suivant un minima dudit signal d'entrée en tant qu'un signal de bruit ambiant et à calculer ladite exposition durable au bruit en calculant un niveau de signal d'entrée sur la base dudit signal de bruit ambiant et des données d'étalonnage.
  18. Dispositif de communication selon l'une quelconque des revendications 12 à 16, dans lequel ledit dispositif de communication est un téléphone comportant un casque d'écoute porté par ledit utilisateur, dans lequel un microphone de casque d'écoute est un second microphone, ledit premier microphone est agencé à distance dudit second microphone et ledit haut-parleur est un écouteur dudit casque d'écoute, et dans lequel ladite unité de traitement est apte à calculer ladite exposition durable à un signal de bruit en calculant un niveau de signal d'entrée sur la base dudit signal d'entrée et des données d'étalonnage.
  19. Système de communication comprenant ledit dispositif de communication selon l'une quelconque des revendications 12 à 18 et un ordinateur connectable audit dispositif de communication via une interface de données, dans lequel ledit dispositif de communication est en outre apte à calculer une énergie de signal à partir dudit signal d'entrée et dudit signal de communication, et à transmettre ladite énergie de signal audit ordinateur, et dans lequel ledit ordinateur est apte à calculer et à contrôler ladite exposition sonore totale à partir de ladite énergie de signal en utilisant des données d'étalonnage et à transmettre une exposition sonore totale mise à jour audit dispositif de communication.
EP06101148A 2006-02-01 2006-02-01 Procédé et appareil pour la protection auditive des utilisateurs de téléphones Not-in-force EP1816892B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT06101148T ATE440455T1 (de) 2006-02-01 2006-02-01 Verfahren und vorrichtung zum gehírschutz von telefonbenutzern
DE602006008569T DE602006008569D1 (de) 2006-02-01 2006-02-01 Verfahren und Vorrichtung zum Gehörschutz von Telefonbenutzern
EP06101148A EP1816892B1 (fr) 2006-02-01 2006-02-01 Procédé et appareil pour la protection auditive des utilisateurs de téléphones
AU2007200489A AU2007200489B2 (en) 2006-02-01 2007-02-02 Method and Apparatus for Protection of the Hearing of Telephone Users
HK08100478.3A HK1109828A1 (en) 2006-02-01 2008-01-15 Method and apparatus for protection of the hearing of telephone users

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06101148A EP1816892B1 (fr) 2006-02-01 2006-02-01 Procédé et appareil pour la protection auditive des utilisateurs de téléphones

Publications (2)

Publication Number Publication Date
EP1816892A1 EP1816892A1 (fr) 2007-08-08
EP1816892B1 true EP1816892B1 (fr) 2009-08-19

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EP (1) EP1816892B1 (fr)
AT (1) ATE440455T1 (fr)
AU (1) AU2007200489B2 (fr)
DE (1) DE602006008569D1 (fr)
HK (1) HK1109828A1 (fr)

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WO2012071650A1 (fr) 2010-12-01 2012-06-07 Sonomax Technologies Inc. Dispositif d'oreillette de communication améliorée et procédé

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GB2456296B (en) * 2007-12-07 2012-02-15 Hamid Sepehr Audio enhancement and hearing protection
WO2010148244A1 (fr) * 2009-06-19 2010-12-23 Dolby Laboratories Licensing Corporation Fonctions spécifiques utilisateur pour noyau et moteur multimédia évolutifs
US9318086B1 (en) 2012-09-07 2016-04-19 Jerry A. Miller Musical instrument and vocal effects
CN106502618B (zh) * 2016-10-21 2020-10-13 深圳市冠旭电子股份有限公司 一种听力保护方法及装置
CN108270913B (zh) * 2017-01-04 2021-02-19 中兴通讯股份有限公司 一种移动终端及听力保护方法
CN113739906B (zh) * 2021-08-31 2023-12-15 深圳市飞科笛系统开发有限公司 噪声暴露指数统计方法、装置、设备及存储介质
CN117692843B (zh) * 2024-02-02 2024-04-16 江西斐耳科技有限公司 一种声音自动调节方法、系统、存储介质及电子设备

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WO2012071650A1 (fr) 2010-12-01 2012-06-07 Sonomax Technologies Inc. Dispositif d'oreillette de communication améliorée et procédé
EP3567869A1 (fr) 2010-12-01 2019-11-13 Sonomax Technologies Inc. Dispositif d'oreillette de communication améliorée et procédé
EP3886456A1 (fr) 2010-12-01 2021-09-29 Sonomax Technologies Inc. Dispositif d'oreillette de communication améliorée et procédé

Also Published As

Publication number Publication date
AU2007200489B2 (en) 2007-12-20
HK1109828A1 (en) 2008-06-20
DE602006008569D1 (de) 2009-10-01
EP1816892A1 (fr) 2007-08-08
ATE440455T1 (de) 2009-09-15
AU2007200489A1 (en) 2007-08-23

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