| ??? 12/20/05 10:38 Read: times |
#105580 - more information... Responding to: ???'s previous message |
Steve M. Taylor said:
What is the information ? I assume its in the ampliutude of the signal ? DO you know the phase and frequency of the input at all times ?
Steve Yes, the information is amplitute of input signal. that's why I need to know exact gain of filter at a specified frequency. signal has only one frequency contaminated by noise. frequency and phase of the signal are known at any moment so appropriate filter can be selected for that frequency. how to select that filter was my first question and second question was how to calculate real gain of filter at that frequency. for example if my first filter is a 1KHz bessel low pass filter then for a signal of 500Hz and for a signal of 150Hz the filter has slightly different gains(formal gain is unity). Regards. |
| Topic | Author | Date |
| Automatic Filter Selection | 01/01/70 00:00 | |
| FFT? | 01/01/70 00:00 | |
| No! | 01/01/70 00:00 | |
| Input frequency | 01/01/70 00:00 | |
| more information... | 01/01/70 00:00 | |
| What you need | 01/01/70 00:00 | |
| much more information | 01/01/70 00:00 | |
| AD630, for instance | 01/01/70 00:00 | |
Validation | 01/01/70 00:00 | |
| Much more information is needed | 01/01/70 00:00 |