Hallo,

I have a task which I have a sin wave encoded with multiple oscillation 1Khz to 200KHz at different instants of time, I want to detect 4 frequencies out of this and analyse its sequence . Likewise in the entire oscillation if the repitition pattern is 80KHz then 62Khz and then 12Khz after some time periods , I mean we have to analyse the sequence . I am not comfortable with DSP and need to do this with MICROprocessor only , what conditioning is required , could we develop FOURE band pass filters for this as we know the frequency domains that are expected and then count the exact frequency . OR could we need to analyse tis with TIMERS od 8051 and search the sequence . The sin wave looks distorted on Oscilloscope , I guess not to find zero crossing with it cant say .The waveform is zigzack most of the time it cross the time line of scope .


AP