Monthly Archives: January 2023

Analog digital continuous discrete

Digital and analog. We often think of them, mistakenly, as equivalent things in different domains. But that’s a misunderstanding, and we often use the terms incorrectly. For instance, run a mic through a preamp and get a signal, we know … Continue reading

Posted in Digital Audio, Fun Facts | Leave a comment

Inter-sample peaks

We’ve seen that samples can represent a signal with greater peak amplitude than the peak sample values. If those sample values were higher, the output would exceed “1.0”, or 0 dB full-scale—I’ll refer to these as “overs”. This brings two … Continue reading

Posted in Digital Audio, Fun Facts, Uncategorized | Leave a comment

Special case: perfect sine waves

Let’s say we want to test the output of a DAC while it passes a pure sine wave. The “pure sine wave” requirement is a bit more difficult than it might seem. In the general case, it’s not possible to … Continue reading

Posted in Digital Audio, Fun Facts | Leave a comment