使用TDA2030所做的功率放大器的multisim的仿真文件，简单实用，在不需要高要求的场合，很适合个人自制使用。-Done using the TDA2030 power amplifier multisim simulation files, simple and practical, without the need for the high demands of the occasion, well suited to the use of personal home-made.

自己写的回声对消算法rls,frls,nlms,apa的matlab仿真，还附有音频文件，和详细的文档说明，很详细，非常适合本科生做毕业设计。-A project on AEC, including rls, frlf, nlms and apa, is carefully writen and would be very helpful to undergraduate students.