An acoustic researcher is designing a high-fidelity digital synthesizer to replicate the sound of a rare Stradivarius violin. To achieve this, they record a live violin note using a precision microphone and convert the continuous analogue pressure wave into a digital signal using an analogue-to-digital converter (ADC).
The diagram below illustrates how the continuous wave is sampled at discrete points in order to represent the sound in binary.
Identify the correct acoustic or digital audio terms to replace the placeholders A, B, and C in the diagram.