Separation of Heart Sound Signal from Noise in Joint Cycle Frequency-Time-Frequency Domains Based on Fuzzy Detection.
Hong TangTing LiYongwan ParkTianshuang QiuPublished in: IEEE Trans. Biomed. Eng. (2010)
Keyphrases
- short time fourier transform
- signal detection
- weak signal
- low signal to noise ratio
- low frequency
- frequency domain
- power spectra
- frequency analysis
- high frequency
- signal processing
- noisy environments
- power spectrum
- random noise
- bandpass
- high pass
- instantaneous frequency
- fuzzy logic
- white noise
- additive noise
- fuzzy sets
- signal analysis
- matched filter
- signal noise ratio
- frequency response
- object detection
- fourier transform
- received signal
- membership functions
- non stationary
- low pass
- frequency spectrum
- response function
- frequency hopping
- detection method
- wide band
- wavelet transform
- band pass filters
- frequency modulation
- spectrum analysis
- noise reduction
- low pass filter
- wiener filter