System and method for assessing breathing and vocal tract sound production of a user

• US 6,423,013 B1
• Filed: 09/15/2000
• Issued: 07/23/2002
• Est. Priority Date: 09/15/2000
• Status: Expired due to Fees

• Current Assignee: Board of Governors of Southwest Missouri State University
• Original Assignee: Board of Governors of Southwest Missouri State University
• Inventors: Bakker, Klaas, Netsell, Ronald W., Byrne, Mary R., Byrne, Thomas A., Biagioni, Richard N.
• Primary Examiner(s): Shaver, Kevin
• Assistant Examiner(s): WINGOOD, PAMELA LYNN
• Application Number:
  US09/662,048
• Time in Patent Office: 676 Days
• Field of Search: 600/23, 600/21, 600/529, 600/530, 600/531, 600/532, 600/533, 600/534, 600/535, 600/536, 600/537, 600/538, 600/539, 600/540, 600/541, 600/542, 600/543, 600/586-595
• US Class Current: 600/586
• CPC Class Codes: A61B 7/00 Instruments for auscultation

Abstract

A system and method for assessing breathing and vocal tract sound production of a user. The system comprises a first sensor generating a vocal tract sound signal representing vocal tract sounds produced by the user, a second sensor generating a breathing signal representing breathing movement of the user, and a signal processing unit for processing the vocal tract sound and breathing signals. The method comprises the steps of sensing vocal tract sounds produced by the user and providing a vocal tract sound signal representative thereof, sensing breathing movement of the user and providing a breathing signal representative thereof, receiving the signals via an analog input for processing the signals, generating a combined signal by superimposing the vocal tract sound and breathing signals, and displaying the combined signal to the user.

Claims

1. A system for assessing breathing and vocal tract sound production of a user comprising:

a first sensor generating a vocal tract sound signal representing vocal tract sounds produced by the user;

a second sensor generating a breathing signal representing breathing movement of the user, said second sensor comprising a first breathing sensor positioned adjacent to an abdominal area of the user for producing an abdominal breathing signal, said second sensor further comprising a second breathing sensor positioned adjacent to a thoracic area of the user for producing a thoracic breathing signal;

an integration unit receiving the abdominal and thoracic breathing signals and selectively outputting either the abdominal or the thoracic breathing signal as the breathing signal; and

a signal processing unit for processing the vocal tract sound and breathing signals, said signal processing unit including an analog input receiving the vocal tract sound and breathing signals from the first and second sensors, respectively, and a processor generating a combined signal representing a superimposition of the received signals to the user.

2. The system of claim 1, wherein the first sensor comprises a microphone connected to the analog input, said microphone receiving the vocal tract sounds produced by the user, producing the vocal tract sound signal, and transmitting the vocal tract sound signal to the signal processing unit via the analog input.

3. The system of claim 1, wherein the second sensor comprises at least one breathing sensor connected to the analog input, said breathing sensor receiving the breathing movement of the user, producing the breathing signal, and transmitting the breathing signal to the signal processing unit via the analog input.

4. The system of claim 1, wherein the integration unit produces a breathing source signal indicating which of the abdominal and thoracic breathing signals is being output as the breathing signal.

5. The system of claim 1, wherein the integration unit alternates between outputting the abdominal and thoracic breathing signals as the breathing signal as a function of a user-defined sampling rate.

7. The system of claim 1, further comprising a volume circuit for amplifying the vocal tract sound signal.

10. The system of claim 1, further comprising a printer for producing a hard-copy representation of the combined signal in approximately real-time.

11. The system of claim 1, further comprising a printing device for producing a hard-copy representation of the combined signal for a preset interval of time.

12. The system of claim 1, further comprising software operative with the processor for superimposing the received vocal tract sound and breathing signals.

6. A system for assessing breathing and vocal tract sound production of a user comprising:

a first sensor generating a vocal tract sound signal representing vocal tract sounds produced by the user;

a second sensor generating a breathing signal representing breathing movement of the user;

a signal processing unit for processing the vocal tract sound and breathing signals, said signal processing unit including an analog input receiving the vocal tract sound and breathing signals from the first and second sensors, respectively, and a processor generating a combined signal representing a superimposition of the received signals to the user; and

a voicing detection circuit for identifying portions of the vocal tract sound signal as being voiced speech sounds.

8. A system for assessing breathing and vocal tract sound production of a user comprising:

a first sensor generating a vocal tract sound signal representing vocal tract sounds produced by the user;

a second sensor generating a breathing signal representing breathing movement of the user; and

a signal processing unit for processing the vocal tract sound and breathing signals, said signal processing unit including an analog input receiving the vocal tract sound and breathing signals from the first and second sensors, respectively, and a processor generating a combined signal representing a superimposition of the received signals to the user, wherein the signal processing unit comprises a personal computer and wherein the analog input comprises at least one joystick input of the personal computer.

9. A system for assessing breathing and vocal tract sound production of a user comprising:

a first sensor generating a vocal tract sound signal representing vocal tract sounds produced by the user;

a second sensor generating a breathing signal representing breathing movement of the user; and

a signal processing unit for processing the vocal tract sound and breathing signals, said signal processing unit including an analog input receiving the vocal tract sound and breathing signals from the first and second sensors, respectively, and a processor generating a combined signal representing a superimposition of the received signals to the user, wherein the processor defines minimum and maximum breathing volume levels as a function of user input and further comprising a display for displaying the combined signal in conjunction with the minimum and maximum breathing volume levels to the user.

13. A system for assessing breathing and vocal tract sound production of a user comprising:

a first sensor generating a vocal tract sound signal representing vocal tract sounds produced by the user;

a second sensor generating a breathing signal representing breathing movement of the user, wherein the second sensor comprises at least one breathing sensor measuring volumetric displacement indicating the breathing movement of the user, said breathing sensor comprising;

at least one belt positioned around a torso area of the user; and

a variable resistor transducer attached to the belt, said transducer outputting the breathing signal as a function of differing resistances caused by expansion and contraction of the belt due to the breathing movement of the user; and

a signal processing unit for processing the vocal tract sound and breathing signals, said signal processing unit including an analog input receiving the vocal tract sound and breathing signals from the first and second sensors, respectively, and a processor generating a combined signal representing a superimposition of the received signals to the user.

14. The system of claim 13 wherein the belt comprises:

an attachment lead connected to the transducer;

a first tab for connecting the attachment lead to the belt;

an elastic lead connected to a slide knob of the transducer, wherein moving said slide knob within a limited range of motion causes the resistance output of the transducer to vary proportionately; and

a second tab for connecting the elastic lead to the belt.

15. The system of claim 14 wherein the belt further comprises elastic material for allowing expansion and contraction of the belt which similarly expands and contracts the elastic lead, wherein the elastic lead moves the slide knob within the limited range of motion to proportionately output varying resistances from the transducer.

16. A system for assessing speech sound production and breathing of a user comprising:

a first sensor generating a speech sound signal representing speech sounds produced by the user;

a second sensor generating a breathing signal representing breathing movement of the user, said second sensor comprising a first breathing sensor positioned adjacent to an abdominal area of the user for producing an abdominal breathing signal, said second sensor further comprising a second breathing sensor positioned adjacent to a thoracic area of the user for producing a thoracic breathing signal;

an integration unit receiving the abdominal and thoracic breathing signals and selectively outputting either the abdominal or the thoracic breathing signal as the breathing signal; and

a signal processing unit for processing the speech sound and breathing signals, said signal processing unit including an analog input receiving the speech sound and breathing signals from the first and second sensors, respectively, and a processor generating a combined signal representing a superimposition of the received signals to the user.

17. A method for assessing breathing and vocal tract sound production of a user comprising the steps of:

sensing vocal tract sounds produced by the user and providing a vocal tract sound signal representative thereof;

sensing breathing movement of the user and providing abdominal and thoracic breathing signals representative thereof via an integration unit, said integration unit selectively outputting either the abdominal or the thoracic breathing signal;

receiving the signals via an analog input for processing the signals;

generating a combined signal by superimposing the vocal tract sound and breathing signals; and

displaying the combined signal to the user.

18. The method of claim 17, wherein the step of generating occurs in software.

19. The method of claim 17, further comprising the step of recording the superimposition of signals for an interval of time.

20. The method of claim 19, further comprising the step of displaying the recorded superimposition of signals to the user while displaying the current superimposition of signals of the user in approximately real-time.

21. The method of claim 17, further comprising the step of displaying a recommended superimposition of signals to the user while displaying the current superimposition of signals of the user in approximately real-time.