集成电路与嵌入式系统2025，Vol.25Issue(1)：74-80,7.DOI:10.20193/j.ices2097-4191.2024.0059
基于LC3的长时后置滤波器研究及其FPGA实现
Research on long-term post filtering based on LC3 and FPGA implementation
李镔 1王法翔1
作者信息
- 1. 福州大学物理与信息工程学院,福州 350108
- 折叠
摘要
Abstract
This paper explores the hardware design and implementation of a Long-Term Post Filter(LTPF)in detail based on the LC3 encoding protocol.The research includes an exploration of the fundamental principles of LTPF,the hardware design architecture,and its implementation and testing on FPGA.The design is validated using an Altera(acquired by Intel)MAX 10 development board.The results demonstrate significant improvements in processing efficiency and achieve hardware acceleration of the LTPF with minimal re-source consumption.Additionally,a comparison is made between the hardware implementation and a C-language fixed-point program on the STM32 platform,highlighting the advantages of the hardware design in terms of processing speed and resource utilization.The re-search results indicate that,although the current design outperforms the software architecture,there is still room for system perform-ance improvement through design optimizations using logic reorganization or pipeline techniques.关键词
音频编解码器/LC3/基音检测/自相关函数/LTPF/基音周期/FPGAKey words
audio codec/LC3/pitch detection/autocorrelation function/LTPF/pitch period/FPGA分类
电子信息工程引用本文复制引用
李镔,王法翔..基于LC3的长时后置滤波器研究及其FPGA实现[J].集成电路与嵌入式系统,2025,25(1):74-80,7.
