Systems and Methods for Providing Noise Leveling in a Breathing Assistance System
First Claim
1. A breathing assistance system providing active noise leveling, the system comprising:
- a gas delivery system operable to supply breathing gas, the gas delivery system producing noise that varies over time; and
an active noise control system configured to generate and output noise leveling sounds to reduce variations in the perceived noise from the breathing assistance system over time, wherein the loudness of the noise leveling sounds varies generally inversely with the loudness of the noise produced by the gas delivery system over time.
3 Assignments
0 Petitions
Accused Products
Abstract
A breathing assistance system having active noise control may include a gas delivery system, a patient interface, a connection system, and a noise control system. The gas delivery system may supply breathing gas to a patient via the connection system and the patient interface. The noise control system may include a processor, a speaker, a reference signal source, and a feedback sensor. The processor may generate noise control signals to be output by the speaker for canceling noise caused by a noise source of the breathing assistance system. The reference signal source may communicate reference signals associated with the noise source. The feedback sensor may detect noise caused by the noise source and noise control signals output by the speaker, and communicate to the processor feedback noise signals based on the detected noise. The processor may generate the noise control signals based at least on the reference signals and the feedback noise signals.
27 Citations
20 Claims
-
1. A breathing assistance system providing active noise leveling, the system comprising:
-
a gas delivery system operable to supply breathing gas, the gas delivery system producing noise that varies over time; and an active noise control system configured to generate and output noise leveling sounds to reduce variations in the perceived noise from the breathing assistance system over time, wherein the loudness of the noise leveling sounds varies generally inversely with the loudness of the noise produced by the gas delivery system over time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A breathing assistance system providing active noise leveling, the system comprising:
-
a ventilation system including a variable noise source that produces noise having a variable loudness over time; and an active noise control system configured to; detect the variable noise produced by the noise source; and based at least on the detected noise, generate and output noise leveling sounds having a loudness that varies generally inversely with the loudness of the noise produced by the variable noise source, such that the loudness of the combined noise from the variable noise source and the noise leveling sounds is relatively constant over time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An active noise control system providing active noise leveling for a breathing assistance system, the active noise control system comprising:
-
a sound detection system configured to detect variable noise produced by a variable noise source associated with a breathing assistance system, the variable noise source producing noise having a variable loudness over time; and a noise processing system configured to generate, based at least on the detected variable noise, noise leveling sounds having a loudness that varies generally inversely with the loudness of the noise produced by the variable noise source, such that the loudness of the combined noise from the variable noise source and the noise leveling sounds is relatively constant over time.
-
-
19. A method for providing active noise leveling for a breathing assistance system, the method comprising:
-
detecting variable noise produced by a variable noise source associated with a breathing assistance system, the variable noise having a variable loudness over time; and based at least on the detected noise, generating and outputting noise leveling sounds having a loudness that varies generally inversely with the loudness of the noise produced by the variable noise source, such that the loudness of the combined noise from the variable noise source and the noise leveling sounds is relatively constant over time.
-
-
20. A breathing assistance system providing active noise leveling, the system comprising:
-
gas delivery means for supplying breathing gas, the gas delivery system producing noise that varies over time; and active noise controlling means for generating and outputting noise leveling sounds to reduce variations in the perceived noise from the breathing assistance system over time, wherein the loudness of the noise leveling sounds varies generally inversely with the loudness of the noise produced by the gas delivery means over time.
-
Specification