Real Time Implementation of an Innovative Digital Audio Equalizer
Fixed frequency response audio equalization has well-known problems due to algorithms computational complexity and to filters design techniques. This paper describes the design and real time implementation of a $M$-band linear phase digital audio equalizer. Beginning from multirate systems and filterbanks, an innovative uniform and non uniform bands audio equalizer is derived. The idea of this work arises from different approaches employed in filterbanks to avoid aliasing in the case of adaptive filtering in each band. The effectiveness of the real time implementation is shown comparing it with a frequency domain equalizer. The solution presented here has several advantages in terms of linear phase and uniform frequency response avoiding ripple between adjacent bands.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.