Monthly Archives: January 2023

Analog digital continuous discrete

Posted on January 16, 2023 by Nigel Redmon

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 →

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Inter-sample peaks

Posted on January 16, 2023 by Nigel Redmon

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 →

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Special case: perfect sine waves

Posted on January 15, 2023 by Nigel Redmon

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 →

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