As audio applications become more complex, it is increasingly difficult to support the required signal processing functions using traditional DSP microprocessors due to their limited processing capability in terms of arithmetic capacity, datapath precision and input-output (I/O) bandwidth limitations. An alternative approach based on Field Programmable Gate Array (FPGA) technology is proposed, which not only preserves the versatility and flexibility of DSP microprocessors but provides the advantages of a customizable datapath which include high degrees of computational and data parallelism, arbitrary precision arithmetic and enormous I/O capacity. This paper presents a case study in which reconfigurable logic technology is employed for implementing infinite impulse response (IIR) filter banks. The study's results show that thousands of second-order filters can be implemented on a single FPGA and demonstrate the potential of reconfigurable logic technology for audio signal processing.
https://www.aes.org/e-lib/browse.cfm?elib=12365
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.
Learn more about the AES E-Library
Start a discussion about this paper!
