The waveform of a continuous-time signal is shown below. What frequency components does the signal have?[img=565x143]18033778cdfa035.png[/img] A: Cosine components for all harmonics B: Sine components for all harmonics C: Sine components for odd harmonics D: Cosine components for odd harmonics

A continuous-time (C-T) periodic signal is shown below, then the components of the signal include ( )[img=634x330]180337809123d5d.bmp[/img] A: direct-current (DC) and cosine components of all harmonics B: DC and sine components of all harmonics C: DC and sine components of odd harmonics D: DC and cosine components of odd harmonics

A continuous-time (C-T) periodic signal is shown below, then the components of the signal include ( )[img=634x330]17de808c88522e2.bmp[/img] A: direct-current (DC) and cosine components of all harmonics B: DC and sine components of all harmonics C: DC and sine components of odd harmonics D: DC and cosine components of odd harmonics

What can be done to silence a piece of music? A: Plus harmonics B: Plus envelope C: Synthesis D: Harmonic transformation