Audio calibration using a microphone
First Claim
Patent Images
1. A microphone comprising:
- a calibration signal generator configured to generate a calibration signal based upon a received invocation input, wherein the calibration signal has known audio properties;
a transducer configured to convert sound energy into an electrical signal;
an integrated circuit configured to receive the electrical signal from the transducer; and
an external microphone interface configured to provide the calibration signal to a device external to the microphone.
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Abstract
A microphone that includes a calibration signal generator that generates a calibration signal based upon a received invocation input. The calibration signal has known audio properties. The microphone also includes a transducer that converts sound energy into an electrical signal. An integrated circuit receives the electrical signal from the transducer. An external microphone interface provides the calibration signal to a device external to the microphone.
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Citations
20 Claims
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1. A microphone comprising:
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a calibration signal generator configured to generate a calibration signal based upon a received invocation input, wherein the calibration signal has known audio properties; a transducer configured to convert sound energy into an electrical signal; an integrated circuit configured to receive the electrical signal from the transducer; and an external microphone interface configured to provide the calibration signal to a device external to the microphone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A microphone comprising:
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a calibration signal generator configured to; receive an external clock signal; divide the external clock signal; and generate a calibration signal based upon a received invocation input, wherein the calibration signal has known audio properties and is derived from the divided external clock signal; a transducer configured to convert sound energy into an electrical signal; an integrated circuit configured to receive the electrical signal from the transducer; and an external microphone interface configured to provide the calibration signal to a device external to the microphone. - View Dependent Claims (14)
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15. A microphone assembly comprising:
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an external-device interface; a transducer having an acoustic input and an electrical signal output; a processing circuit having an input coupled to the electrical signal output of the transducer, the processing circuit having an output coupled to the external-device interface; a calibration signal generation circuit having an input, the calibration signal generation circuit having a calibration signal output coupled to the external-device interface, the calibration signal generation circuit capable of outputting a calibration signal at the external-device interface, wherein the calibration signal is an electrical signal. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification