Discrete cosine transforms (DCTs) express a function or a signal in terms of
A. Sum of cosine functions oscillating at different frequencies
B. Sum of cosine functions oscillating at same frequencies
C. Sum of cosine functions at different sampling intervals
D. Sum of cosine functions oscillating at same sampling intervals
Answer:A
Discrete cosine transforms (DCTs) express a function or a signal in terms of
A. Sum of cosine functions oscillating at different frequencies B. Sum of cosine functions oscillating at same frequencies C. Sum of cosine functions at different sampling intervals D. Sum of cosine functions oscillating at same sampling intervals