Method of obtaining settings of a hearing instrument, and a hearing instrument

A digital hearing instrument comprising at least one outer microphone, a signal processing unit with a data memory, and at least one receiver operable to produce an output acoustic signal for impinging on a user's eardrum, the signal processing unit being operable to transform an input signal provided by said at least one outer microphone into an output signal supplied to said at least one receiver, the transformation of the input signal into the output signal defining a signal gain applied by the signal processing unit, the signal processing unit being operable to set at least one fitting parameter of the digital hearing instrument by a method comprising the steps of:

• obtaining a transfer function representative of an acoustic transfer from the receiver to outer microphone while the hearing instrument is placed in or at a user's ear,
• performing a computation of a real ear acoustic coupling quantity or anatomical transfer quantity, wherein in said computation the transfer function is used as an input quantity, and
• using said real ear acoustic coupling quantity or anatomical transfer quantity to determine the fitting parameter or fitting parameters, wherein the fitting parameter or fitting parameters is/are an adjustment of a gain characteristic of the hearing instrument,
• wherein for each of a plurality of frequency bands a fitting parameter is set, said fitting parameter being a frequency band gain correction value for correcting a gain which, by the signal processing unit, is applied on the input signal of the signal processing unit.

A method for setting at least one fitting parameter of a digital hearing instrument, the method comprising the steps of:

• providing the hearing instrument placed in or at a user's ear, the hearing instrument comprising at least one outer microphone operable to obtain an input signal from an acoustic signal incident on the user's ear, and at least one receiver operable to produce an output acoustic signal for impinging on the user's eardrum,
• obtaining a transfer function representative of an acoustic transfer from the receiver to the outer microphone,
• performing a computation of a real ear acoustic coupling quantity or anatomical transfer quantity, wherein in said computation the transfer function is used as an input quantity, and
• using said real ear acoustic coupling quantity or anatomical transfer quantity to determine the fitting parameter or fitting parameters,
• wherein the transfer function is dependent on the signal frequency, and wherein said quantity is also dependent on the signal frequency,
• wherein an audible part of the acoustic spectrum is divided in frequency bands, and wherein the transfer function is represented by a transfer function value in each frequency band,
• wherein in each frequency band a frequency band value of said quantity is calculated,
• wherein for the computation a multiple input/multiple output model is used, wherein at least some of the multiple inputs are frequency band transfer function values and wherein at least some of the multiple outputs are the frequency band values of said quantity.

A method for setting at least one fitting parameter of a digital hearing instrument, the method comprising the steps of:

• providing the hearing instrument placed in or at a user's ear, the hearing instrument comprising at least one outer microphone operable to obtain an input signal from an acoustic signal incident on the user's ear, and at least one receiver operable to produce an output acoustic signal for impinging on the user's eardrum,
• obtaining a transfer function representative of an acoustic transfer from the receiver to the outer microphone,
• performing a computation of a real ear acoustic coupling quantity or anatomical transfer quantity, wherein in said computation the transfer function is used as an input quantity, and
• using said real ear acoustic coupling quantity or anatomical transfer quantity to determine the fitting parameter or fitting parameters,
• wherein in said computation in addition to said transfer function an additional quantity is used as an input quantity, and wherein said additional quantity is at least one of an additional transfer function representative of an acoustic transfer from the receiver to the outer microphone, of anthropomometric data, of geometrical data, of tympanometric data, and of type or style information.

A method for setting at least one fitting parameter of a digital hearing instrument, the method comprising the steps of:

• providing the hearing instrument placed in or at a user's ear, the hearing instrument comprising at least one outer microphone operable to obtain an input signal from an acoustic signal incident on the user's ear, and at least one receiver operable to produce an output acoustic signal for impinging on the user's eardrum,
• obtaining a transfer function representative of an acoustic transfer from the receiver to the outer microphone,
• performing a computation of a real ear acoustic coupling quantity or anatomical transfer quantity, wherein in said computation the transfer function is used as an input quantity, and
• using said real ear acoustic coupling quantity or anatomical transfer quantity to determine the fitting parameter or fitting parameters,
• wherein the computation includes calculating a linear combination of frequency dependent signal feedback threshold gain values for each one of a plurality of frequency dependent values representative of said real ear acoustic coupling quantity or anatomical transfer quantity.

A method for setting at least one fitting parameter of a digital hearing instrument, the method comprising the steps of:

• providing the hearing instrument placed in or at a user's ear, the hearing instrument comprising at least one outer microphone operable to obtain an input signal from an acoustic signal incident on the user's ear, and at least one receiver operable to produce an output acoustic signal for impinging on the user's eardrum,
• obtaining a transfer function representative of an acoustic transfer from the receiver to the outer microphone,
• performing a computation of a real ear acoustic coupling quantity or anatomical transfer quantity, wherein in said computation the transfer function is used as an input quantity, and
• using said real ear acoustic coupling quantity or anatomical transfer quantity to determine the fitting parameter or fitting parameters,
• wherein the computation includes assigning the signal feedback threshold gain to a class of signal feedback threshold gains, and choosing a real ear acoustic coupling quantity value or anatomical transfer quantity value representative of a real ear acoustic coupling quantity or anatomical transfer quantity class assigned to said class of signal feedback threshold gains, to be the computed real ear acoustic coupling quantity or anatomical transfer quantity.