Which lossy method for audio compression is responsible for encoding the difference between two consecutive samples?

The correct answer is C. Adaptive Differential Pulse Code modulation (ADPCM).

ADPCM is a lossy compression algorithm that encodes the difference between two consecutive samples of an audio signal. This is done by using a predictor to estimate the next sample value, and then encoding the difference between the actual sample value and the predicted value.

ADPCM is a very efficient compression algorithm, and it is often used in applications such as voice compression and music compression.

The other options are incorrect for the following reasons:

• Silence Compression is a technique that is used to remove silence from audio recordings. It does not encode the difference between two consecutive samples.
• Linear Predictive Coding (LPC) is a technique that is used to model the spectral envelope of an audio signal. It does not encode the difference between two consecutive samples.
• Code Excited Linear Predictor (CELP) is a technique that is used to encode speech signals. It does not encode the difference between two consecutive samples.