formats

Q versus Bandwidth

This article is worth reading in order to understand the difference between Q and bandwidth when it comes to filter width.

rane.com – Bandwidth in Octaves Versus Q in Bandpass filters

Here is a PDF of the same information:

Rane – Bandwidth in Octaves Versus Q in Bandpass filters PDF

Here are wiki explanations of “Q factor” / “Quality factor” & Bandwidth

WIKI – Q factor
WIKI – Bandwidth (signal processing)

Here is a screen shot of the Rane table for those who want something portable:

Rane - Q to Bandwidth conversion table