Programmable hearing aid with automatic adaption to auditory conditions

• US 5,604,812 A
• Filed: 02/08/1995
• Issued: 02/18/1997
• Est. Priority Date: 05/06/1994
• Status: Expired due to Term

• Current Assignee: Siemens Audiologische Technik GmbH (Siemens AG)
• Original Assignee: Siemens Audiologische Technik GmbH (Siemens AG)
• Inventors: Meyer, Wolfram
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Le, Huyen D.
• Application Number:
  US08/385,695
• Time in Patent Office: 741 Days
• Field of Search: 381/23.1, 381/60, 381/68, 381/68.2, 381/68.4, 128/746, 73/585
• US Class Current: 381/314
• CPC Class Codes: H04R 2225/41 Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest
• CPC Class Codes: H04R 25/507 implemented by neural network or fuzzy logic
• CPC Class Codes: H04R 25/556 External connectors, e.g. plugs or modules H04R25/607 takes precedence
• CPC Class Codes: H04R 25/558 Remote control, e.g. of amplification, frequency
• CPC Class Codes: H04R 25/70 Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Abstract

For continuous, automatic and autonomous adaptation of its transmission characteristics, a hearing aid includes in addition to a microphone, earphone and amplifier/transmission circuit, a first data memory in which audiometric data are stored, a second data memory in which hearing aid characteristics are stored, a third data memory in which algorithms are stored, a signal analysis unit that determines control signals dependent on input quantities characteristic of the current ambient situation, and also includes a data processing unit, the data processing unit offering hearing aid setting data for the amplifier/transmission circuit from the data of the data memories and from the control signals of the signal analysis unit, so that the transmission characteristics of the amplifier/transmission circuit can be automatically determined from the edited audiometric data, hearing aid characteristics, prescribable algorithms and the input quantities characteristic of the current ambient situation.

Claims

1. A programmable hearing aid comprising:

a microphone which receives incoming audio signals;

an earphone which emits output audio signals produced from said incoming audio signals;

amplifier and transmission means connected between said microphone and said earphone, and being adjustable to different transmission characteristics, for producing said output audio signals from said incoming audio signals;

first data memory means for storing audiometric data;

second data memory means for storing characteristic data of said hearing aid;

third data memory means for storing algorithms;

signal analysis means connected to said microphone, for generating control signals, dependent on said incoming audio signals, which characterize a current ambient auditory situation; and

data processing means, connected to said signal analysis means, said first, second and third data memory means, and said amplifier and transmission means for automatically and autonomously generating setting data for setting said transmission characteristics of said amplifier and transmission means dependent on said audiometric data, said characteristic data of said hearing aid, said algorithms and said control signals characterizing said current ambient auditory situation.

2. A programmable hearing aid as claimed in claim 1 further comprising:

fourth data memory means for storing unsharp inputs provided by a wearer of said hearing aid, said fourth data memory means being connected to said data processing means; and

fuzzy logic means, contained in said data processing means, for generating said setting data for said amplifier and transmission means by operating on said audiometric data, said characteristic data of said hearing aid, said unsharp inputs, said algorithms and said control signal according to rules of fuzzy logic.

3. A programmable hearing aid as claimed in claim 2 further comprising switch means, actuatable by said hearing aid wearer, for entering unsharp inputs into said fourth data memory means.

4. A programmable hearing aid as claimed in claim 2 wherein said fuzzy logic means comprises data memory means for storing said fuzzy logic rules, and control means to which the respective data from said first, second, third and fourth memory means and said control signals are supplied and connected to said data memory means for fetching said fuzzy logic rules therefrom.

5. A programmable hearing aid as claimed in claim 4 further comprising receiver means for wirelessly receiving data for, and for transmitting said data to, the respective first, second and third memory means, for wirelessly receiving said unsharp inputs and for transmitting said unsharp inputs to said fourth data memory means, and for wirelessly receiving said fuzzy logic rules and for transmitting said fuzzy logic rules to said data memory means of said fuzzy logic means.

6. A programmable hearing aid as claimed in claim 5 further comprising remote control means for entering said data into said first, second and third data memory means and for entering said unsharp inputs into said fourth data memory means and for entering said fuzzy logic rules into said data memory means of said fuzzy logic means, including wireless transmitter means for communicating with said receiver means.

7. A programmable hearing aid as claimed in claim 4 further comprising programming socket means for receiving data for, and transmitting said data into, the respective first, second and third memory means, for receiving said unsharp inputs and for transmitting said unsharp inputs to said fourth data memory means, and for receiving said fuzzy logic rules and for transmitting said fuzzy logic rules to said data memory means of said fuzzy logic means.

8. A programmable hearing aid as claimed in claim 7 further comprising a programming unit containing neural network means, connected to said programming socket, for transmitting at least one of said audiometric data, said data characterizing said hearing aid, said algorithms and said fuzzy logic rules to said data processing means.

9. A programmable hearing aid as claimed in claim 2 further comprising trainable means for generating at least one of said algorithms and said fuzzy logic rules.

10. A programmable hearing aid as claimed in claim 9 wherein said trainable means is connected each of said first, second, third and fourth data memory means via said programming socket means for using the data stored in each of said first, second, third and fourth data memory means in generating said at least one of said algorithms and said fuzzy logic rules.

11. A programmable hearing aid as claimed in claim 1 wherein said signal analysis means comprises means for operating on said incoming audio signals according to rules of fuzzy logic to generate said control signals.