PWM Sound Playback 1 (5 pts) An FPGA chip can be programmed to produce a 250 KHz 8-bit PWM signal. A

PWM Sound Playback 1 (5 pts) An FPGA chip can be programmed to produce a 250 KHz 8-bit PWM signal. A low pass filter circuit then smooths the “square” PWM into a usable audio waveform. This driver technique is used in MP3 audio sound players R R DIGITAL VouT OUTPUT FPGA ON T T Given the digital output below, sketch the filtered analog waveform Vout, using your imagination The analog signal should be as representative as possible (ie., include small wavy ripples). HHI

 

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