Thanks very much for your kind reply.
1. the J.D has already been configured with 7.3728 for 48KHZ
2. I'm not sure that my source data is correct. do you have any correct source data for us to debug ? If you have, can you send them to my email (wzhiwei7@163.com) ? thanks very much
3. I'm trying to obtain the spectrum, i'll attach it latter.