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
基于LC3编码协议,详细探讨了长时后置滤波器(LTPF)的硬件设计与实现.研究内容包括LTPF的基本原理、硬件设计架构及其在FPGA上的实现和测试.通过使用Altera(已被英特尔收购)MAX 10开发板进行了验证,结果显示,硬件实现显著提高了处理效率,并在较低资源消耗下实现了 LTPF的硬件加速功能.此外,本文还将硬件实现与STM32平台上的C语言定点程序进行了对比,展示了硬件设计在处理速度和资源利用上的优势.研究结果表明,尽管当前设计已优于软件架构,但未来通过逻辑重组或流水线技术对设计进行优化,系统性能还有提升空间.
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引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据