Earhealth monitoring system and method I
First Claim
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1. A method of operating an audio device having an ear canal receiver (ECR) capable of operating in an ECR or ear canal microphone (ECM) mode comprising:
- calculating estimated sound pressure levels (SPL1) for drive signals directed to the ECR during a time increment Δ
t, when the ECR is in the ECR mode;
predicting a sound pressure level (PSPL1) for ambient acoustic signals that would be received by the ECR during the time increment Δ
t, if the ECR was in the ECM mode but is in ECR mode;
calculating an estimated SPL_Dose during the time increment Δ
t as a function of SPL1 and PSPL1; and
calculating a total SPL_Dose of the audio device at a time t using the estimated SPL_Dose.
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Abstract
Methods of operating an audio device are provided. A method includes calculating estimated sound pressure levels (SPLs) for drive signals directed to an ear canal receiver (ECR) during a time increment Δt; calculating an estimated SPL_Dose during the time increment Δt using the estimated sound pressure levels; and calculating a total SPL_Dose at a time t of the audio device using the estimated SPL_Dose.
58 Citations
13 Claims
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1. A method of operating an audio device having an ear canal receiver (ECR) capable of operating in an ECR or ear canal microphone (ECM) mode comprising:
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calculating estimated sound pressure levels (SPL1) for drive signals directed to the ECR during a time increment Δ
t, when the ECR is in the ECR mode;predicting a sound pressure level (PSPL1) for ambient acoustic signals that would be received by the ECR during the time increment Δ
t, if the ECR was in the ECM mode but is in ECR mode;calculating an estimated SPL_Dose during the time increment Δ
t as a function of SPL1 and PSPL1; andcalculating a total SPL_Dose of the audio device at a time t using the estimated SPL_Dose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating an audio device comprising:
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calculating estimated sound pressure levels (SPL1) for drive signals directed to an ear canal receiver (ECR) during a time increment Δ
t, when the ECR is in an ECR mode;measuring sound pressure levels (SPL2) for ambient acoustic signals received by the ECR during the time increment Δ
t, when the ECR is in the ear canal microphone (ECM) mode;predicting a sound pressure level (PSPL1) for ambient acoustic signals that would be received by the ECR during the time increment Δ
t, if the ECR was in the ECM mode but is in the ECR mode;calculating an SPL total during the time increment Δ
t using SPL1 and PSPL1 when the ECR is in the ECR mode, if the ECR is in the ECM mode during the time increment Δ
t then SPL total during the time increment Δ
t is calculated using SPL2;calculating an estimated SPL_Dose during the time increment Δ
t using SPL1 and PSPL1 when the ECR is in ECR mode and SPL2 when ECR is in ECM mode;comparing the SPL total to a permissible sound level (PSL), and if SPL total is less than PSL then the step of calculating an estimated SPL_Dose uses a recovery function that is at least one of a linear function and an exponential function to calculate the estimated SPL_Dose during the time increment Δ
t; andcalculating a total SPL_Dose of the audio device at a time t using the estimated SPL_Dose, where t=t0+Δ
t, where t0 is the time at the beginning of the time increment Δ
t. - View Dependent Claims (12, 13)
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Specification