Hearing system and method for deriving information on an acoustic scene
First Claim
1. Method for operating a hearing system comprising an input unit, an output unit, a characterizing unit operationally connected to said input unit and a transmission unit operationally interconnecting said input unit and said output unit, said transmission unit implementing a transfer function which describes, how audio signals generated by said input unit are processed in order to derive audio signals fed to said output unit, and which can be adjusted by one or more transfer function parameters, said method comprising the steps ofa1) obtaining, by means of a first beam former in said input unit and with a first directional characteristic of said input unit due to the first beam former having the first directional characteristic, first audio signals from incoming acoustic sound;
- a2) obtaining, by means of a second beam former in said input unit and with a second directional characteristic of said input unit due to the second beam former having the second directional characteristic, which is different from said first directional characteristic, second audio signals from incoming acoustic sound;
b1) deriving from said first audio signals, by means of said characterizing unit, a first set of sound-characterizing data characterizing the first audio signals, which are obtained by means of the first beam former, as at least one of speech, noise, speech in noise, and music;
b2) deriving from said second audio signals a second set of sound-characterizing data characterizing the second audio signals, which are obtained by means of the second beam former, as at least one of speech, noise, speech in noise, and music;
c) deriving a value for each of at least one of said transfer function parameters in dependence offirst directional information, which is data comprising information on said first directional characteristic,said first set of sound-characterizing data,second directional information, which is data comprising information on said second directional characteristic, and ofsaid second set of sound-characterizing data,by evaluating each of the first directional information, the first set of sound-characterizing data characterizing the first audio signals, the second directional information, and the second set of sound-characterizing data characterizing the second audio signals,wherein steps b1) and b2) together comprise simultaneously classifying incoming acoustic sound incoming from a first direction with respect to an ear as at least one of speech, noise, speech in noise, and music, while differently classifying other incoming acoustic sound incoming from a second direction with respect to said ear as at least one of speech, noise, speech in noise, and music.
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Abstract
The invention relates to a method for operating a hearing system comprising an input unit, an output unit and a transmission unit operationally interconnecting said input output units. Said transmission unit implements a transfer function describing, how audio signals generated by said input unit are processed in order to derive audio signals fed to said output unit, and can be adjusted by one or more transfer function parameters. Said method comprises obtaining, by means of said input unit and with a first directional characteristic, first audio signals from incoming acoustic sound; deriving from said first audio signals a first set of sound-characterizing data; and deriving, in dependence of
- first directional information, which is data comprising information on said first directional characteristic, and of
- said first set of sound-characterizing data,
a value for each of said one or more transfer function parameters. This allows to gain insight into the acoustic environment and allows for better automatic adjustments of said transfer function.
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Citations
26 Claims
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1. Method for operating a hearing system comprising an input unit, an output unit, a characterizing unit operationally connected to said input unit and a transmission unit operationally interconnecting said input unit and said output unit, said transmission unit implementing a transfer function which describes, how audio signals generated by said input unit are processed in order to derive audio signals fed to said output unit, and which can be adjusted by one or more transfer function parameters, said method comprising the steps of
a1) obtaining, by means of a first beam former in said input unit and with a first directional characteristic of said input unit due to the first beam former having the first directional characteristic, first audio signals from incoming acoustic sound; -
a2) obtaining, by means of a second beam former in said input unit and with a second directional characteristic of said input unit due to the second beam former having the second directional characteristic, which is different from said first directional characteristic, second audio signals from incoming acoustic sound; b1) deriving from said first audio signals, by means of said characterizing unit, a first set of sound-characterizing data characterizing the first audio signals, which are obtained by means of the first beam former, as at least one of speech, noise, speech in noise, and music; b2) deriving from said second audio signals a second set of sound-characterizing data characterizing the second audio signals, which are obtained by means of the second beam former, as at least one of speech, noise, speech in noise, and music; c) deriving a value for each of at least one of said transfer function parameters in dependence of first directional information, which is data comprising information on said first directional characteristic, said first set of sound-characterizing data, second directional information, which is data comprising information on said second directional characteristic, and of said second set of sound-characterizing data, by evaluating each of the first directional information, the first set of sound-characterizing data characterizing the first audio signals, the second directional information, and the second set of sound-characterizing data characterizing the second audio signals, wherein steps b1) and b2) together comprise simultaneously classifying incoming acoustic sound incoming from a first direction with respect to an ear as at least one of speech, noise, speech in noise, and music, while differently classifying other incoming acoustic sound incoming from a second direction with respect to said ear as at least one of speech, noise, speech in noise, and music. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Hearing system comprising
an input unit comprising a first beam former having a first directional characteristic for obtaining, with the first directional characteristic of said first beam former, first audio signals from incoming acoustic sound, wherein the input unit further comprises a second beam former having a second directional characteristic, which is different from said first directional characteristic, for obtaining, with the second directional characteristic of said second beam former, second audio signals from incoming acoustic sound; -
an output unit for receiving output audio signals and transducing these into signals to be perceived by a user of the hearing system; a transmission unit, which is operationally interconnecting said input unit and said output unit, and which implements a transfer function, which can be adjusted by one or more transfer function parameters and which describes, how audio signals generated by said input unit are processed in order to derive said output audio signals; a characterizing unit for deriving from said first audio signals a first set of sound-characterizing data characterizing the first audio signals, which are obtained via the first beam former, as at least one of speech, noise, speech in noise, and music, and deriving from said second audio signals a second set of sound-characterizing data characterizing the second audio signals, which are obtained via the second beam former, as at least one of speech, noise, speech in noise, and music; an evaluating unit for deriving a value for each of at least one of said transfer function parameters, in dependence of said first set of sound-characterizing data, first directional information, which is data comprising information on said first directional characteristic, said second set of sound-characterizing data, and of second directional information, which is data comprising information on said second directional characteristic, by evaluating each of the first directional information, the first set of sound-characterizing data characterizing the first audio signals, the second directional information, and the second set of sound-characterizing data characterizing the second audio signals, wherein the hearing system simultaneously classifies incoming acoustic sound incoming from a first direction with respect to an ear as at least one of speech, noise, speech in noise, and music, while differently classifying other incoming acoustic sound incoming from a second direction with respect to said ear as at least one of speech, noise, speech in noise, and music. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. Method for deriving information on an acoustic scene, comprising the steps of
p1) obtaining, with a first directional characteristic, first audio signals from incoming acoustic sound from said acoustic scene, wherein the first audio signals are obtained using a beam former having the first directional characteristic; -
p2) obtaining, with a second directional characteristic, which is different from said first directional characteristic, second audio signals from incoming acoustic sound from said acoustic scene, wherein the second audio signals are obtained using said or another beam former having the second directional characteristic; q1) deriving from said first audio signals a first set of sound-characterizing data characterizing the first audio signals, which are obtained using the beam former having the first directional characteristic, as at least one of speech, noise, speech in noise, and music; q2) deriving from said second audio signals a second set of sound-characterizing data characterizing the second audio signals, which are obtained using said or the another beam former having the second directional characteristic, as at least one of speech, noise, speech in noise, and music; r) deriving said information on said acoustic scene in dependence of first directional information, which is data comprising information on said first directional characteristic, said first set of sound-characterizing data, second directional information, which is data comprising information on said second directional characteristic, and of said second set of sound-characterizing data by evaluating each of the first directional information, the first set of sound-characterizing data characterizing the first audio signals, the second directional information, and the second set of sound-characterizing data characterizing the second audio signals, wherein steps q1) and q2) are performed simultaneously such that incoming acoustic sound incoming from a first direction with respect to an ear is classified as at least one of speech, noise, speech in noise, and music, while other incoming acoustic sound incoming from a second direction with respect to said ear is simultaneously differently classified as at least one of speech, noise, speech in noise, and music. - View Dependent Claims (21, 22, 23)
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24. Method for manufacturing signals to be perceived by a user of a hearing system comprising an input unit, an output unit, a characterizing unit operationally connected to said input unit and a transmission unit operationally interconnecting said input unit and said output unit, said transmission unit implementing a transfer function which describes, how audio signals generated by said input unit are processed in order to derive audio signals fed to said output unit, and which can be adjusted by one or more transfer function parameters, said method comprising the steps of
s1) obtaining, by means of a first beam former in said input unit and with a first directional characteristic of said input unit due to the first beam former having the first directional characteristic, first audio signals from incoming acoustic sound; -
s2) obtaining, by means of a second beam former in said input unit and with a second directional characteristic of said input unit due to the second beam former having the second directional characteristic, which is different from said first directional characteristic, second audio signals from incoming acoustic sound; t1) deriving from said first audio signals, by means of said characterizing unit, a first set of sound-characterizing data characterizing the first audio signals, which are obtained by means of the first beam former, as at least one of speech, noise, speech in noise, and music; t2) deriving from said second audio signals a second set of sound-characterizing data characterizing the second audio signals, which are obtained by means of the second beam former, as at least one of speech, noise, speech in noise, and music; u) deriving a value for each of at least one of said transfer function parameters in dependence of first directional information, which is data comprising information on said first directional characteristic, said first set of sound-characterizing data, second directional information, which is data comprising information on said second directional characteristic, and of said second set of sound-characterizing data, by evaluating each of the first directional information, the first set of sound-characterizing data characterizing the first audio signals, the second directional information, and the second set of sound-characterizing data characterizing the second audio signals; v) obtaining output audio signals by processing audio signals generated by said input unit according to said transfer function using said derived value or values; w) transducing said output audio signals into said signals to be perceived by a user of the hearing system, wherein steps t1) and t2) together comprise simultaneously classifying incoming acoustic sound incoming from a first direction with respect to an ear as at least one of speech, noise, speech in noise, and music, while differently classifying other incoming acoustic sound incoming from a second direction with respect to said ear as at least one of speech, noise, speech in noise, and music. - View Dependent Claims (25, 26)
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Specification