| ??? 11/23/06 13:59 Read: times |
#128450 - Very narrow-band IIR filter? Responding to: ???'s previous message |
Christoph said:
They are a way to design very narrow-band 2nd order IIR filters easily (only one variable), and are used in applications like DTMF tone recognition. Very narrow-band IIR-filters are highly unstable! "IIR" stands for "Infinite Impulse Response". Even the least rounding error can make the whole thing to oscillate. Also, IIR-filters do not support decimating. And stopping the algorithm at any time might also result in the develop of oscillation. Kai |
| Topic | Author | Date |
| oscillation analysis | 01/01/70 00:00 | |
| You might want to look at ... | 01/01/70 00:00 | |
| Very narrow-band IIR filter? | 01/01/70 00:00 | |
| Explanations | 01/01/70 00:00 | |
| More details needed! | 01/01/70 00:00 | |
| More details .. | 01/01/70 00:00 | |
| Active filters | 01/01/70 00:00 | |
| Active filters | 01/01/70 00:00 | |
| so its frequency modulation basically | 01/01/70 00:00 | |
| I am confused as to what you do want | 01/01/70 00:00 | |
| I am confused as to | 01/01/70 00:00 | |
| yeah well horrendous problems | 01/01/70 00:00 | |
| Spectrum Analyses.. | 01/01/70 00:00 | |
Harmonics... | 01/01/70 00:00 |