A wheeze identification device based on bi-orthogonal wavelet filter banks is utilized for identifying wheeze of lung sounds of a patient, comprising a lung-sound signal processing unit, a characteristic signal acquisition unit, and a wheeze identifying unit. The lung-sound signal processing unit is for receiving the lung sounds of the patient and generating a corresponding sound signal. The characteristic signal acquisition unit includes a plurality of bi-orthogonal wavelet filter banks for allowing the sound signal to pass through the plurality of bi-orthogonal wavelet filter banks so as to obtain a characteristic signal of the sound signal. The wheeze identifying unit is for calculating relative wavelet energy of the characteristic signal. When the relative wavelet energy is greater than a threshold value and remains so over an observation time period, the wheeze identifying unit determines whether the lung sound contains the wheeze.一種基於雙正交小波濾波組之哮鳴音辨識裝置,適用於辨識病患之肺音中的哮鳴音,並包含一肺音訊號處理單元、一特徵訊號獲得單元,及一哮鳴音辨識單元。該肺音訊號處理單元用以接收病患之肺音,並產生一相對應的聲音訊號。該特徵訊號獲得單元包含多數個雙正交小波濾波組,並用以將該聲音訊號通過該等雙正交小波濾波組,以獲得該聲音訊號之一特徵訊號。該哮鳴音辨識單元用以計算該特徵訊號的相對小波能量。當該等相對小波能量超過一臨界值,且相對應的時間持續一觀察時間以上時,該哮鳴音辨識單元判斷該肺音包含哮鳴音。1...基於雙正交小波濾波組之哮鳴音辨識裝置11...本體12...肺音訊號處理單元121...麥克風122...類比數位轉換器13...特徵訊號獲得單元14...哮鳴音辨識單元15...警示單元
