| ??? 06/21/06 13:56 Read: times |
#118738 - Yes, quite sure. Responding to: ???'s previous message |
Are you sure? Intermodulation products appear whenever two different frequencies hit an unlinear device, which is also the human ear.<p>
Beat frequencies will appear as one tone whose volume is modulated (but the pitch is still similar to that of the two single frequencies). If two signals of ~17 kHz are added, then the result will be a tone of ~17 kHz that changes its volume. Also, the frequencies have to be about the same to achieve a beat frequency (~5%), else they will just sound like two single tones. The human ear does not have the right kind of nonlinearity (i.e. rectification) to make beat frequencies audible. Which is probably a good thing. |
| Topic | Author | Date |
| High pitched ring tones | 01/01/70 00:00 | |
| LM556 | 01/01/70 00:00 | |
| Download The Ring Tone. | 01/01/70 00:00 | |
| Adding signals with two frequencies | 01/01/70 00:00 | |
| Sure? | 01/01/70 00:00 | |
| Yes, quite sure. | 01/01/70 00:00 | |
| Intermodulation not beat frequencies | 01/01/70 00:00 | |
| Remember piano tuners | 01/01/70 00:00 | |
| A test should tell it | 01/01/70 00:00 | |
| Tuning instruments. | 01/01/70 00:00 | |
| Yes, but... | 01/01/70 00:00 | |
| Mixing 2 ultrasonic frequencys | 01/01/70 00:00 | |
| Cool! | 01/01/70 00:00 | |
| We experimented with the "ionovac" | 01/01/70 00:00 | |
Mixing two rf signals | 01/01/70 00:00 | |
| Adding signals with two frequencies | 01/01/70 00:00 | |
| Don't do that! | 01/01/70 00:00 | |
| I'm with Andy | 01/01/70 00:00 | |
| active noise reduction | 01/01/70 00:00 | |
| Rest your fears | 01/01/70 00:00 | |
| a better idea | 01/01/70 00:00 | |
| Detecting high pitch sounds | 01/01/70 00:00 | |
| No, no, do it the hard way | 01/01/70 00:00 |