Fig. 7From: FPGA implementation of an improved envelope detection approach for bearing fault diagnosisa Temporal representation of \({x}_{out}\left(t\right)\) without noise, b temporal representation of \({x}_{out}\left(t\right)\) without noise \({x}_{out}\left(t\right)\) (SNR = − 12 dB), and c frequency representation of \({x}_{out}\left(t\right)\) with noiseBack to article page