The Basics of Audio Filters – Mixed Signals

Video

https://www.youtube.com/watch?v=Zb3itEvPoX8

Summary

### Summary

In this video, the basics of audio filters in Sound Engineering and Sound Design are discussed. Filters are essential tools for removing unwanted parts of the audio spectrum and emphasizing desired frequencies. There are four main types of filters: low pass, high pass, band pass, and band stop filters. The cut-off frequency is a filter’s primary characteristic, categorizing it into these groups. Moreover, we learn that the frequencies allowed to pass are known as the pass band, while the frequencies blocked are called the stop band. The rate at which attenuation occurs in the stop band is referred to as the slope of the filter, typically measured in decibels per octave.

Highlights

• Filters eliminate unwanted audio spectrum and accentuate desired frequencies
• Four main types: low pass, high pass, band pass, and band stop filters
• Cut-off frequency serves as the filter’s primary characteristic
• Frequencies allowed to pass = pass band; blocked frequencies = stop band
• Attenuation rate in stop band = slope of the filter (measured in decibels per octave)

Key Takeaways

• Filters are crucial for managing the audio spectrum and enhancing desired frequencies