Digital cell phone with hearing aid functionality

• US 20050135644A1
• Filed: 10/19/2004
• Published: 06/23/2005
• Est. Priority Date: 12/23/2003
• Status: Abandoned Application

• Current Assignee: Audigicomm LLC
• Original Assignee: Audigicomm LLC
• Inventors: Qi, Yingyong
• Application Number:
  US10/967,966
• Publication Number:
  US 20050135644A1
• Time in Patent Office: Days
• US Class Current: 381/314
• CPC Class Codes: H04M 1/72478 for hearing-impaired users
• 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 25/43 Electronic input selection or mixing based on input signal analysis, e.g. mixing or selection between microphone and telecoil or between microphones with different directivity characteristics H04R25/407 takes precedence
• CPC Class Codes: H04R 25/505 using digital signal processing

Abstract

A digital cell phone with built in hearing aid functionality, includes: a housing; a digital signal processor (DSP) contained within the housing for encoding and decoding digital data; a hearing loss compensation module, coupled to the DSP, for processing digital data in accordance with a hearing loss compensation algorithm; a digital-to-analog converter (DAC), coupled to the hearing loss compensation module, for receiving the processed digital data from the hearing loss compensation circuit and converting the data into an analog signal; and a speaker, coupled to the DAC, for receiving the analog signal and converting the analog signal into sound waves adapted for a hearing impaired listener.

Claims

1. A digital cell phone having hearing aid functionality, comprising:

a microprocessor;

a memory, coupled to the microprocessor, for storing at least one program executable by the microprocessor;

a key pad, coupled to the microprocessor, for entering alphanumeric information to be processed by the microprocessor;

a display screen, coupled to the microprocessor, for displaying alphanumeric information received from the microprocessor;

a radio frequency (RF) antenna, coupled to the microprocessor, for transmitting and receiving RF signals;

a microphone for receiving sound waves and converting the sound waves into an analog signal;

an analog-to-digital converter (ADC), coupled to the microphone, for converting the analog signal received from the microphone into a digital data format;

a digital signal processor (DSP) comprising an encoder for encoding digital data into an RF signal format to be transmitted by the RF antenna and a decoder for decoding digital data received by the RF antenna;

a hearing loss compensation module, coupled to the DSP, for processing digital data in accordance with a hearing loss compensation algorithm;

a digital-to-analog converter (DAC), coupled to the hearing loss compensation module, for converting the processed digital data received from the hearing loss compensation module into an analog signal; and

a speaker, coupled to the DAC, for receiving the analog signal from the DAC and outputting audible sound waves adapted for listening by a hearing impaired user.

2. The digital cell phone of claim 1 wherein the hearing loss compensation module comprises a circuit integrated with other circuitry of the DSP in a single integrated circuit chip.

3. The digital cell phone of claim 1 further comprising an interface port for coupling at least one ear phone to the DAC wherein the at least one ear phone receives the analog signal from the DAC and outputs the audible sound waves.

4. The digital cell phone of claim 1 further comprising a wireless interface for coupling at least one wireless ear phone to the output of the hearing loss compensation module, wherein the wireless interface comprises a transmitter for transmitting short range wireless signals and the at least one wireless ear phone comprises a receiver for receiving the short range wireless signals.

5. The digital cell phone of claim 4 wherein the at least one wireless ear phone further comprises a second digital-to-analog converter (DAC) for converting received digital data into an analog signal, and a mini-speaker for converting the analog signal from the second DAC into audible sound waves.

6. The digital cell phone of claim 1 wherein the cell phone provides at least two signal processing paths, a first signal processing path being utilized when the cell phone is operating as a digital cell phone wherein audio data received by the RF antenna is processed by the hearing loss compensation module, and a second signal processing path being utilized when the cell phone is operating as a standalone hearing aid device and sound waves received by the microphone are converted into a digital data format and thereafter processed by the hearing loss compensation module.

7. The digital cell phone of claim 1 wherein the hearing loss compensation module comprises processing circuitry for executing a hearing loss compensation program stored in the memory.

8. The digital cell phone of claim 7 wherein a plurality of hearing loss compensation programs are stored in the memory, each of the hearing loss compensation programs being user selectable and comprising a unique hearing loss compensation algorithm.

9. The digital cell phone of claim 8 further comprising an automatic selection program stored in the memory that when executed measures ambient noise characteristics of an environment and thereafter automatically identifies one of a plurality of hearing loss compensation programs that is best suited for that particular environment based on the ambient noise measurements.

10. The digital cell phone of claim 9 wherein if the identified hearing loss compensation program is not stored in the memory, the automatic selection program sends a request to the microprocessor to download the identified hearing loss compensation program from an external source and store the selected program in the memory.

11. The digital cell phone of claim 7 wherein the hearing loss compensation program is downloaded from an external source and stored in the memory.

12. A hearing loss compensating communication system, comprising:

a digital cell phone for transmitting and receiving voice data, wherein the digital cell phone comprises circuitry for converting sound waves into a digital data format for transmission and converting received voice data into audible sound waves; and

a hearing loss compensation module, coupled to the circuitry, for further processing the received voice data in accordance with a hearing loss compensation algorithm, wherein the processed voice data when converted into an analog format provides enhanced sound waves adapted for listening by a hearing impaired listener.

13. The hearing loss compensating communication system of claim 12 wherein the circuitry within the digital cell phone comprises:

a microphone for receiving sound waves and producing an analog signal representative of the sound waves;

an analog to digital converter (ADC), coupled to the microphone, for converting the analog signal into digital data; and

a processing path that enables the digital cell phone to function as a standalone hearing aid device wherein digital data output from the ADC is delivered to the hearing loss compensation module for processing in accordance with the hearing loss compensation algorithm.

14. The hearing loss compensating communication system of claim 12 further comprising an ear phone coupled to the digital cell phone for providing the enhanced sound waves to the hearing impaired listener.

15. The hearing loss compensating communication system of claim 14 further comprising a digital-to-analog converter (DAC), coupled to an output of the hearing loss compensation module, for converting the processed digital data into an analog signal, wherein the ear phone is coupled to an output of the DAC for receiving the analog signal and converting the analog signal into audible sound waves.

16. The hearing loss compensating communication system of claim 14 wherein the ear phone is wirelessly coupled to the digital cell phone, the ear phone comprising a receiver for receiving electromagnetic signals from the digital cell phone.

17. The hearing loss compensating communication system of claim 12 wherein the hearing loss compensation module comprises processing circuitry for executing a hearing loss compensation program stored in a memory of the digital cell phone.

18. The hearing loss compensating communication system of claim 17 wherein a plurality of hearing loss compensation programs are stored in the memory, each of the hearing loss compensation programs being user selectable and comprising a unique hearing loss compensation algorithm.

19. The hearing loss compensating communication system of claim 18 further comprising an automatic selection program stored in the memory that when executed measures ambient noise characteristics of an environment and thereafter automatically identifies one of a plurality of hearing loss compensation programs that is best suited for that particular environment.

20. The hearing loss compensating communication system of claim 19 wherein if the identified hearing loss compensation program is not stored in the memory, the automatic selection program sends a request to the microprocessor to download the identified hearing loss compensation program via a wireless communication link and store the selected program in the memory.

21. The hearing loss compensating communication system of claim 17 wherein the hearing loss compensation program is downloaded from an external source and stored in the memory.

22. A digital cell phone with built in hearing aid functionality, comprising:

a housing;

a digital signal processor (DSP) contained within the housing for encoding and decoding digital data;

a hearing loss compensation module, coupled to the DSP, for processing digital data in accordance with a hearing loss compensation algorithm;

a digital-to-analog converter (DAC), coupled to the hearing loss compensation module, for receiving the processed digital data from the hearing loss compensation circuit and converting the data into an analog signal; and

a speaker, coupled to the DAC, for receiving the analog signal and converting the analog signal into sound waves adapted for a hearing impaired listener.

23. The digital cell phone of claim 22 wherein the hearing loss compensation module comprises a circuit integrated with other circuitry of the DSP in a single integrated circuit chip.

24. The digital cell phone of claim 22 further comprising an interface port for coupling at least one ear phone to the DAC wherein the at least one ear phone receives the analog signal from the DAC and outputs hearing loss compensated audible sound waves.

25. The digital cell phone of claim 22 further comprising a wireless interface for coupling at least one wireless ear phone to the output of the hearing loss compensation circuit, wherein the wireless interface comprises a transmitter for transmitting short range wireless signals.

26. The digital cell phone of claim 25 wherein the at least one wireless ear phone comprises a receiver for receiving short range wireless signals, a second digital-to-analog converter (DAC) for converting received digital data into an analog signal, and a mini-speaker for receiving the analog signal from the second DAC and producing audible sound waves.

27. The digital cell phone of claim 22 wherein the cell phone provides at least two signal processing paths, a first signal processing path being utilized when the cell phone is operating as a digital cell phone wherein audio data received in a RF data format via the RF antenna is processed by the hearing loss compensation module, and a second signal processing path being utilized when the cell phone is operating as a standalone hearing aid device wherein analog signals received via the microphone are converted into a digital data format and thereafter processed by the hearing loss compensation module.

28. The digital cell phone of claim 22 wherein the hearing loss compensation module comprises processing circuitry for executing a hearing loss compensation program stored in a memory of the digital cell phone.

29. The digital cell phone of claim 28 wherein a plurality of hearing loss compensation programs are stored in the memory, each of the hearing loss compensation programs being user selectable and providing a unique hearing loss compensation function.

30. The digital cell phone of claim 29 further comprising an automatic selection program stored in the memory that when executed measures ambient noise characteristics of an environment and thereafter automatically identifies one of a plurality of hearing loss compensation programs that is best suited for that particular environment.

31. The digital cell phone of claim 30 wherein if the identified hearing loss compensation program is not stored in the memory, the automatic selection program initiates a download routine wherein the identified hearing loss compensation program is downloaded from an external source and stored in the memory.

32. The digital cell phone of claim 28 wherein the hearing loss compensation program is downloaded from an external source and stored in the memory.

33. A method of compensating for hearing loss using a digital telephone, comprising:

receiving a digital signal via a digital phone;

decoding the digital signal so as to provide a second digital signal in a predefined format;

processing the second digital signal in accordance with a hearing loss compensation algorithm so as to provide a hearing loss compensated digital signal;

converting the hearing loss compensated digital signal into an analog signal; and

converting the analog signal into audible sound waves adapted for a hearing impaired listener.

34. The method of claim 33 wherein the predefined format comprises a pulse code modulation (PCM) format.

35. The method of claim 33 wherein the act of processing the second digital signal comprises executing a hearing loss compensation program stored in a memory of the digital telephone.

36. The method of claim 35 wherein the hearing loss compensation program is downloaded by the digital telephone from an external source and stored in the memory.

37. The method of claim 35 further comprising storing a plurality of hearing loss compensation programs in the memory, each hearing loss compensation program providing a unique hearing loss compensation function.

38. The method of claim 37 further comprising:

measuring ambient noise parameters; and

identifying a hearing loss compensation program from the plurality of program that is best suited to compensate for hearing loss based on the measured ambient noise parameters.

39. The method of claim 38 further comprising automatically executing the identified hearing loss compensation program.

40. The method of claim 33 further comprising providing the audible sound waves via an ear phone coupled to the digital telephone.

41. The method of claim 40 wherein the ear phone is wirelessly coupled to the digital telephone.