Sampling rate refers to the number of digital samples taken per second of an analog audio signal. A higher sampling rate allows for more accurate reproduction of the original sound by capturing more data. The standard CD sampling rate is 44.1kHz. Bit depth determines the number of possible amplitude levels that can be represented in each digital sample. A higher bit depth provides more precision in capturing the amplitude but requires more storage space. Standard CD audio has a bit depth of 16-bits, providing 65,536 possible amplitude levels per sample. When an analog audio signal is converted to digital, the continuous waveform is converted into discrete samples. The difference between the original analog signal and the quantized digital representation is called quantization error