Patent ID: 11967334
Assignee: SIVANTOS PTE. LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of operating a hearing device on a basis of a speech signal, the method which comprises:
recording with an acousto-electric input transducer of the hearing device a sound which contains the speech signal from surroundings of the hearing device, and converting the sound into an input audio signal;
performing a signal processing operation for generating an output audio signal based on the input audio signal;
quantitatively acquiring at least one articulatory and/or prosodic feature of the speech signal through analysis of the input audio signal by way of the signal processing operation, and deriving from the property a quantitative measure of a speech quality of the speech signal; and
setting at least one parameter of the signal processing operation for generating the output audio signal on a basis of the quantitative measure of the speech quality of the speech signal; and
selectively deriving the quantitative measure as a binary measure or as a discrete measure or as a continuous measure, and:
a) when the quantitative measure is a binary measure:
the binary measure adopting a first value or a second value depending on the speech quality;
wherein the first value is assigned to a sufficiently good speech quality of the speech signal and the second value is assigned to an insufficient speech quality of the speech signal;
wherein, for the first value, the at least one parameter of the signal processing operation is preset to a first parameter value that corresponds to a regular mode of the signal processing operation; and
wherein, for the second value, the at least one parameter of the signal processing operation is set to a second parameter value different from the first parameter value; or

b) when the quantitative measure is a discrete measure:
the discrete measure adopting a value from a value range of at least three discrete values depending on the speech quality; and
mapping individual values of the quantitative measure monotonically onto corresponding discrete parameter values for the at least one parameter; or

c) when the quantitative measure is a continuous measure:
the continuous measure adopting a value from a continuous value range depending on the speech quality; and
mapping individual values of the quantitative measure monotonically onto corresponding parameter values from a continuous parameter interval for the at least one parameter.