HEARING AID APPARATUS WITH FUNDAMENTAL FREQUENCY MODIFICATION
First Claim
1. A hearing aid apparatus, comprising:
- a frequency analysis device that is configured to determine an instantaneous fundamental frequency value of a speech signal for a time portion of the speech signal;
a statistical evaluation device that is configured to determine an average fundamental frequency value of the speech signal over several time portions;
a fundamental frequency modifier that is configured to modify the instantaneous fundamental frequency value to a modified fundamental frequency value such that a difference or a quotient of the instantaneous fundamental frequency value is changed to the average fundamental frequency value according to a specific function, in order to thus modify a frequency range within which the fundamental frequency value varies; and
a speech signal generator that is configured to generate, on the basis of the modified fundamental frequency value, a speech signal modified with regard to the fundamental frequency.
1 Assignment
0 Petitions
Accused Products
Abstract
A hearing aid apparatus includes a frequency analysis device configured to determine an instantaneous fundamental frequency value of a speech signal for a time portion of the speech signal. A statistical evaluation device is configured to determine an average fundamental frequency value of the speech signal over several time portions. A hearing aid apparatus further includes a fundamental frequency modifier that is configured to modify the instantaneous fundamental frequency value to a modified fundamental frequency value such that a difference or a quotient of the instantaneous fundamental frequency value is changed to the average fundamental frequency value according to a specific function. Thereby, a frequency range may be modified within which the fundamental frequency value varies. The hearing aid apparatus further includes a speech signal generator that is configured to generate, on the basis of the modified fundamental frequency value, a speech signal modified with regard to the fundamental frequency.
9 Citations
12 Claims
-
1. A hearing aid apparatus, comprising:
-
a frequency analysis device that is configured to determine an instantaneous fundamental frequency value of a speech signal for a time portion of the speech signal; a statistical evaluation device that is configured to determine an average fundamental frequency value of the speech signal over several time portions; a fundamental frequency modifier that is configured to modify the instantaneous fundamental frequency value to a modified fundamental frequency value such that a difference or a quotient of the instantaneous fundamental frequency value is changed to the average fundamental frequency value according to a specific function, in order to thus modify a frequency range within which the fundamental frequency value varies; and a speech signal generator that is configured to generate, on the basis of the modified fundamental frequency value, a speech signal modified with regard to the fundamental frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for processing a speech signal, comprising:
-
determining an instantaneous fundamental frequency value of a speech signal for a time portion of the speech signal; determining an average fundamental frequency value of the speech signal over several time portions; modifying the instantaneous fundamental frequency value to a modified fundamental frequency value such that a difference or a quotient of the instantaneous fundamental frequency value is changed to the average fundamental frequency value according to a specific function in order to modify a frequency range within which the fundamental frequency value varies; and generating, on the basis of the modified fundamental frequency value, a speech signal modified with regard to the fundamental frequency.
-
-
12. A non-transitory digital storage medium having a computer program stored thereon to perform a method for processing a speech signal, said method comprising:
-
determining an instantaneous fundamental frequency value of a speech signal for a time portion of the speech signal; determining an average fundamental frequency value of the speech signal over several time portions; modifying the instantaneous fundamental frequency value to a modified fundamental frequency value such that a difference or a quotient of the instantaneous fundamental frequency value is changed to the average fundamental frequency value according to a specific function in order to modify a frequency range within which the fundamental frequency value varies; and generating, on the basis of the modified fundamental frequency value, a speech signal modified with regard to the fundamental frequency, when said computer program is run by a computer.
-
Specification