The DF1 IIR filter structure is the most common structure employed in audio applications. A limiting factor associated with the DF1 structure is the non-linear distribution of the pole/zero locations in the 'z' domain after coefficient quantization. This paper proposes the application of dither to double precision coefficients which permits double precision performance to be achieved with single precision arithmetic. This realization provides a versatile wide band DF1 realization suitable for most audio applications.
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 free for AES members and E-Library subscribers.