Dear Sir ,
We use MAX98357A I2S audio amplifier with Jetson Nano . When playing music , there are two pop noise , one is happened before music start , the other is at end of music delayed 4 seconds . Playing the same music at MAX98357A EVB ( USB to I2S (DSP board) + MAX98357A (Amplifier board) ) , there is no such pop noise . From the " pop noise .jpg " image , We found the pop noise happened at around the beginning of LRCLK signal , but if repeat play the same music immediately , ther is no pop noise . In the MAX98357A EVB , without play music , ther still are BCLK / LRCLK waveform , in jetson Nano , BCLK / LRCLK are present only when play music . Can this problem be fixed by modifying the I2S driver to send the BCLK / LRCLK waveform always ?