Integrated Wearable Noise Dosimeter
First Claim
1. A system comprisinga microphone configured to provide an audio signal;
- a rectifier communicatively coupled to the microphone;
a logarithmic amplifier communicatively coupled to the rectifier, wherein a combination of the logarithmic amplifier and the rectifier is configured to provide a rectified logarithmic signal based on a mathematical log function and the audio signal;
an analog to digital converter (ADC) communicatively coupled to the logarithmic amplifier, wherein the ADC is configured to sample the rectified logarithmic signal and provide a digital output based on the sampled rectified logarithmic signal; and
a controller comprising a memory and a processor, wherein the controller is configured to carry out instructions, the instructions comprising;
at predetermined time intervals, causing the ADC to sample the rectified logarithmic signal;
storing the digital output in the memory; and
transmitting the digital output to a computing device, wherein the computing device is configured to correlate the digital output with other biometric data.
4 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods are described that may provide audio information about an environment around a wearable device. Such audio information may be correlated with other biometric data to provide physiological information, e.g. regarding a wearer of the wearable device. For example, an illustrative method includes receiving an audio signal via a microphone of a wearable device and rectifying the audio signal with a peak detector. The method further includes amplifying the rectified signal with a logarithmic amplifier and causing an analog to digital converter (ADC) to sample the logarithmic signal. The method also includes causing the ADC to convert the sampled logarithmic signal to a digital output and storing the digital output in a memory of the wearable device. In some embodiments, the method includes transmitting the digital output to a computing device, which may correlate the digital output with other biometric data.
7 Citations
20 Claims
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1. A system comprising
a microphone configured to provide an audio signal; -
a rectifier communicatively coupled to the microphone; a logarithmic amplifier communicatively coupled to the rectifier, wherein a combination of the logarithmic amplifier and the rectifier is configured to provide a rectified logarithmic signal based on a mathematical log function and the audio signal; an analog to digital converter (ADC) communicatively coupled to the logarithmic amplifier, wherein the ADC is configured to sample the rectified logarithmic signal and provide a digital output based on the sampled rectified logarithmic signal; and a controller comprising a memory and a processor, wherein the controller is configured to carry out instructions, the instructions comprising; at predetermined time intervals, causing the ADC to sample the rectified logarithmic signal; storing the digital output in the memory; and transmitting the digital output to a computing device, wherein the computing device is configured to correlate the digital output with other biometric data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising
a microphone configured to provide an audio signal; -
a logarithmic amplifier communicatively coupled to the microphone, wherein the logarithmic amplifier is configured to provide a logarithmic signal based on a mathematical log function and the audio signal; a rectifier communicatively coupled to the logarithmic amplifier, wherein the rectifier is configured to provide a rectified signal based on the logarithmic signal; an analog to digital converter (ADC) communicatively coupled to the rectifier, wherein the ADC is configured to sample the rectified signal and provide a digital output based on the sampled rectified signal; and a controller comprising a memory and a processor, wherein the controller is configured to carry out instructions, the instructions comprising; at predetermined time intervals, causing the ADC to sample the rectified signal; storing the digital output in the memory; and transmitting the digital output to a computing device, wherein the computing device is configured to correlate the digital output with other biometric data. - View Dependent Claims (9, 10, 11, 12)
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13. A system comprising
a microphone configured to provide an audio signal; -
a rectifier communicatively coupled to the microphone, wherein the rectifier is configured to provide a rectified signal based on the audio signal; an analog to digital converter (ADC) communicatively coupled to the rectifier, wherein the ADC is configured to sample the rectified signal and provide a digital output based on the sampled rectified signal; and a controller comprising a memory and a processor, wherein the controller is configured to carry out instructions, the instructions comprising; at predetermined time intervals, causing the ADC to sample the rectified signal; storing the digital output in the memory; providing a logarithmic output based on a mathematical log function and the digital output; and transmitting the digital output to a computing device, wherein the computing device is configured to correlate the digital output with other biometric data. - View Dependent Claims (14, 15, 16, 17)
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18. A method comprising:
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receiving an audio signal via a microphone of a wearable device; rectifying the audio signal with a rectifier to provide a rectified signal, wherein the rectifier comprises a peak detector; amplifying the rectified signal with a logarithmic amplifier to provide a logarithmic signal based on a mathematical log function and the rectified signal; causing an analog to digital converter (ADC) to sample the logarithmic signal; causing the ADC to convert the sampled logarithmic signal to a digital output; storing the digital output in a memory of the wearable device; and transmitting the digital output to a computing device, wherein the computing device is configured to correlate the digital output with other biometric data. - View Dependent Claims (19, 20)
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Specification