Recap: Signal Processing

Front

What is Jitter in signal processing?

Back

Jitter refers to the variability in time delay in data transmission, not a constant time delay.

Front

Can sensor drift be removed by using a low-pass filter?

Back

No, sensor drift cannot be effectively removed by a low-pass filter.

Front

What is the Nyquist theorem?

Back

The Nyquist theorem states that to accurately sample a signal, the sampling frequency must be at least twice the highest frequency component of the signal.

Front

What is the suggested sampling frequency for online processing of human arm movements with frequency components up to 7Hz?

Back

105Hz, which is more than twice the highest frequency component.

Front

What is the minimal sampling frequency for offline processing of human arm movements with frequency components up to 7Hz?

Back

14Hz, which is twice the highest frequency component.

Front

Define a low-pass filter in signal processing.

Back

A low-pass filter allows signals with a frequency lower than a certain cutoff frequency to pass through and attenuates frequencies higher than the cutoff.

Front

What is aliasing in signal processing?

Back

Aliasing occurs when a signal is sampled at a rate that is insufficient to capture the changes in the signal, leading to distortion.

Front

What is the purpose of a high-pass filter?

Back

A high-pass filter allows signals with a frequency higher than a certain cutoff frequency to pass through and attenuates frequencies lower than the cutoff.

Front

Explain the term 'bandwidth' in the context of signal processing.

Back

Bandwidth refers to the range of frequencies within a given band that a signal occupies or can transmit.

Front

What is the role of a sampling theorem in signal processing?

Back

The sampling theorem provides guidelines on how to sample a continuous signal to accurately reconstruct it from its samples.