Graphic Audio Equalizer Example
12 views (last 30 days)
Show older comments
Hi,
I have found an example of Graphic Audio Equalizer as an example in CMSIS DSP library (ARM processors). (https://arm-software.github.io/CMSIS_5/DSP/html/group__GEQ5Band.html)
Description:This example demonstrates how a 5-band graphic equalizer can be constructed using the Biquad cascade functions. A graphic equalizer is used in audio applications to vary the tonal quality of the audio.
Each filter section is 4th order and consists of a cascade of two Biquads. Each filter has a nominal gain of 0 dB (1.0 in linear units) and boosts or cuts signals within a specific frequency range. The edge frequencies between the 5 bands are 100, 500, 2000, and 6000 Hz. Each band has an adjustable boost or cut in the range of +/- 9 dB. For example, the band that extends from 500 to 2000 Hz has the response shown below
The array bandGains specifies the gain in dB to apply in each band. For example, if bandGains={0, -3, 6, 4, -6}
I need help how to build this example in Matlab.
0 Comments
Answers (1)
See Also
Categories
Find more on Simulation, Tuning, and Visualization in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!