DEVICE AND METHOD FOR DETECTING OCCURRENCE OF WHEEZE
First Claim
1. A device for detecting occurrence of wheeze in a lung sound, said device comprising:
- an acoustic processing unit for obtaining a lung sound and for generating a raw sound signal in time domain accordingly;
a filtering unit for filtering the raw sound signal to obtain a filtered signal within a specific frequency bandwidth, the filtered signal having a plurality of sections with respect to the time domain; and
an identifying unit for computing an energy value of each of the sections of the filtered signal, and for determining that a wheeze occurs in the lung sound when the energy values of a part of the sections are larger than a predetermined value and duration of said part of the sections is longer than a predetermined observation time in the time domain.
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Abstract
A device for detecting occurrence of wheeze in a lung sound includes an acoustic processing unit, a filtering unit, and an identifying unit. The acoustic processing unit is for obtaining a lung sound and for generating a raw sound signal accordingly. The filtering unit is for filtering the raw sound signal to obtain a filtered signal. The filtered signal has a plurality of sections with respect to the time domain. The identifying unit is for computing an energy value of each of the sections of the filtered signal, and for determining that a wheeze occurs when the energy values of a part of the sections are larger than a predetermined value and duration of the part of the sections is longer than a predetermined observation time.
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Citations
18 Claims
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1. A device for detecting occurrence of wheeze in a lung sound, said device comprising:
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an acoustic processing unit for obtaining a lung sound and for generating a raw sound signal in time domain accordingly; a filtering unit for filtering the raw sound signal to obtain a filtered signal within a specific frequency bandwidth, the filtered signal having a plurality of sections with respect to the time domain; and an identifying unit for computing an energy value of each of the sections of the filtered signal, and for determining that a wheeze occurs in the lung sound when the energy values of a part of the sections are larger than a predetermined value and duration of said part of the sections is longer than a predetermined observation time in the time domain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for detecting occurrence of wheeze in a lung sound, said method to be implemented by a detecting device and comprising the following steps of:
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A) configuring the detecting device to obtain a lung sound and to generate a raw sound signal in time domain accordingly; B) configuring the detecting device to filter the raw sound signal to obtain a filtered signal within a specific frequency bandwidth, the filtered signals having a plurality of sections with respect to the time domain; C) configuring the detecting device to compute an energy value of each of the sections of the filtered signal; and D) configuring the detecting device to determine that a wheeze occurs in the lung sound when the energy values of a part of the sections are larger than a predetermined value and duration of said part of the sections is longer than a predetermined observation time in the time domain. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification