analog to digital converter sampling rate

In other words, the digital-to-analog converter will connect all the points captured by the analog-to-digital converter, any values that existed originally between these points will be suppressed. If you think about it for a while, you will see that the waveform resulted from the digital-to-analog conversion won’t be perfect, as it won’t have all the points from the original analog signal, just some of them. And so on.ĭuring the digital-to-analog conversion, the numbers will be converted again into voltages. In this case the distance of each point will be of 1 / 44,100 second or 22.675 µs. If a sampling rate of 44,100 Hz is used, it means that 44,100 points will be captured per second. Thus, the distance of each sampling point will be of 1 / 22,050 second (45.35 µs, in this case). If a sampling rate of 22,050 Hz is used, for example, this means that in one second 22,050 points will be sampled. The frequency on which the sampling will occur is called sampling rate. In Figure 2 you see an example of some sampling points on our analog signal. Each sample will be converted into a number, based on its voltage level. What the ADC circuit does is to take samples from the analog signal from time to time. The “y” axis represents voltage while the “x” axis represents time. Let’s assume that it is an audio signal, since this the most popular applications for analog-to-digital and digital-to-analog conversions.

For our explanations, consider the analog signal found in Figure 1.

Analog to digital converter sampling rate