[amp_mcq option1=”Silence Compression” option2=”Linear Predictive Coding (LPC)” option3=”Adaptive Differential Pulse Code modulation (ADPCM)” option4=”Code Excited Linear Predictor (CELP)” correct=”option3″]
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.