Why do we need to increase sampling frequency at the transmitter?

1. What does increasing sampling frequency do?
2. Why is a higher sampling frequency better?
3. What happens when the sampling frequency is too high?
4. How does sampling frequency affect signal?

What does increasing sampling frequency do?

Higher sampling rates provide better sound quality, but require more space for the digital recording. According to the Nyquist-Shannon-Kotelnikov sampling theorem, the sampling rate can only properly represent sound with frequencies up to half of the sampling rate.

Why is a higher sampling frequency better?

Using a higher sample rate with your audio music recording can prevent aliasing problems that are common with cymbals, brass, and some string instruments. A sample rate that's moderately higher can also smooth out high frequency filters.

What happens when the sampling frequency is too high?

If the rate of samples is too high the system may not be able to process them fast enough - it runs out of processing time.

How does sampling frequency affect signal?

Sampling rate determines the sound frequency range (corresponding to pitch) which can be represented in the digital waveform. The range of frequencies represented in a waveform is often called its bandwidth.