DIG 6206 Lecture 5

In PCM, _______ results in a sequence of samples that retain the shape of the analog signal.

• Ideal Sampling

• Natural Sampling

• Sample and hold

According to the Nyquist theorem, the sampling rate must be at least 2 times the _______ contained in the signal

• Lowest frequency

• Avergae frequency

• Highest frequency

The _____ process is sometimes referred to as pulse amplitude modulation

(PAM).

• Sampling

• Quantization

• Encoding

In _______, the data is generated bit by bit.

• Sampling

• Quantization

• Pulse Code Modulation

• Delta Modulation

In delta modulation, ______ occurs when the step size of the quantizer is too small to follow the rapid changes in the analog signal.

• Quantization noise

• Slope Overload

• Pulse Amplitude Modulation

In ______, when several consecutive bits have the same value, the encoder and decoder assume that slope overload is occurring, and the step size becomes progressively larger

• Pulse Amplitude Modulation

• Pulse Code Modulation

• Delta Modulation

• Adaptive Delta Modulation

________ in delta modulation occurs when the step size is too large, making it difficult to accurately reconstruct small variations in the input signal.

• Sampling

• Granular Noise

• Slope Overload

In a noiseless channel, to achieve higher data transmission speeds, we can either increase the line's bandwidth or enhance the signal-to-noise ratio.

• True

• False