Apparatus and methods for detecting a microphone condition
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsAnindya BHATTACHARYA, Bhoodev KUMAR, Jaimin MEHTA, Yongsheng SHI, Aleksey S. KHENKIN, John L. MELANSON
Life of this patent
Estimating the term…
Abstract
A method and apparatus for detecting a microphone condition of a microphone, the method comprising: applying an electrical stimulus to a microphone; measuring an electrical response to the electrical stimulus at the microphone; comparing the electrical response to an expected response; and determining the microphone condition based on the comparison.
Claims44
(canceled)
The method of claim 49, wherein the electrical stimulus is applied to one or more audio output terminals of the microphone.
(canceled)
The method of claim 49, wherein measuring the electrical response further comprises:
- determining an impedance of the microphone based on the measured electrical response;
- and
- wherein comparing the electrical response to the expected response comprises:
- comparing the impedance to an expected impedance of the microphone.
(canceled)
The method of claim 49, wherein one or more of a frequency, an amplitude, and a phase of the electrical stimulus is varied over time.
(canceled)
(canceled)
The method of claim 49, further comprising:
- detecting the presence of interference in a first component of the measured electrical response;
- wherein comparing the electrical response to the expected response comprises comparing a second component of the electrical response different to the first component to the expected response.
-13. (canceled)
The method of claim 49, wherein comparing the electrical response to the expected response comprises:
- determining one or more frequencies of the electrical response;
- and
- comparing the one or more frequencies with one or more expected frequencies of the expected response.
(canceled)
The method of claim 49, wherein comparing the electrical response to the expected response comprises:
- determining a group delay associated with the microphone;
- and
- comparing the group delay with an expected group delay of the expected response.
(canceled)
The method of claim 49, wherein comparing the electrical response to the expected response comprises:
- determining an amplitude of the electrical response;
- and
- comparing the amplitude with an expected amplitude of the expected response.
(canceled)
(canceled)
The method of claim 49, wherein the electrical stimulus is applied to a power terminal of the microphone.
(canceled)
-30. (canceled)
The method of claim 49, further comprising determining an operating mode of the microphone, wherein the expected response is determined based on the determined operating mode of the microphone.
The method of claim 49, wherein determining the microphone condition comprises:
- determining the presence of microphone or a fault in the microphone.
(canceled)
The method of claim 49, further comprising:
- applying a second electrical stimulus, one or more characteristics of the second electrical stimulus determined based on the comparison between the electrical response and the expected response.
(canceled)
-40. (canceled)
(canceled)
-48. (canceled)
A method for detecting a microphone condition of a microphone, the method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- and
- determining the microphone condition based on the comparison, wherein one or more characteristics of the electrical stimulus are randomly or pseudo-randomly generated.
A method for detecting a microphone condition of a microphone, the method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- determining the microphone condition based on the comparison;
- and
- detecting the presence of interference in a first component of the measured electrical response;
- wherein comparing the electrical response to the expected response comprises comparing a second component of the electrical response different to the first component to the expected response.
A method for detecting a microphone condition of a microphone, the method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- determining the microphone condition based on the comparison;
- and
- determining an operating mode of the microphone;
- wherein the expected response is determined based on the determined operating mode of the microphone.
An apparatus for detecting a microphone condition of a microphone, the apparatus comprising processing circuitry and a non-transitory machine readable medium which, when executed by the processing circuitry, cause the apparatus to perform a method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- and
- determining the microphone condition based on the comparison, wherein one or more characteristics of the electrical stimulus are randomly or pseudo-randomly generated.
An apparatus for detecting a microphone condition of a microphone, the apparatus comprising processing circuitry and a non-transitory machine readable medium which, when executed by the processing circuitry, cause the apparatus to perform a method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- determining the microphone condition based on the comparison;
- and
- detecting the presence of interference in a first component of the measured electrical response;
- wherein comparing the electrical response to the expected response comprises comparing a second component of the electrical response different to the first component to the expected response.
An apparatus for detecting a microphone condition of a microphone, the apparatus comprising processing circuitry and a non-transitory machine readable medium which, when executed by the processing circuitry, cause the apparatus to perform a method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- determining the microphone condition based on the comparison;
- and
- determining an operating mode of the microphone;
- wherein the expected response is determined based on the determined operating mode of the microphone.
A non-transitory machine-readable medium storing instructions thereon which, when executed by one or more processors, cause an electronic apparatus to perform a method comprising:
- applying an electrical stimulus to a microphone;
- measuring an electrical response to the electrical stimulus at the microphone;
- comparing the electrical response to an expected response;
- and
- determining the microphone condition based on the comparison, wherein one or more characteristics of the electrical stimulus are randomly or pseudo-randomly generated.
Dependencies are inferred from the claim text.