| ??? 07/05/06 13:34 Modified: 07/05/06 14:03 Read: times |
#119673 - I do often use a sine burst generator Responding to: ???'s previous message |
Richard said:
Until you have the means to stimulate your circuitry in a predictable way, you can't test it. You can play with it all day, but until you have the means to subject your prototypes to a verifiable sequence of well-defined stimuli, both digital and analog, that represent the various combinations of signals to which they may be expected to respond, both singly and in combination, you haven't got the means to perform proper tests. When I design active loudspeakers I widely use a (self fabrictated) sine burst generator. I put a very precise and ultra small Sennheiser microphone directly in front of the membrane of loudspeaker and can measure the amplitude and phase shift. This data is urgently needed to properly design the cross over network, consisting of 4th order Linkwitz Riley filters and all pass filters to provide additional phase shift. The advantage of using a sine burst generator is, that the signal is over before any unwanted reflections from the walls can interfere the measurement. So, I can do very precise measurements in a simple living room, not needing any special acoustic characteristics! Kai |
| Topic | Author | Date |
| Poor man's dds function generator | 01/01/70 00:00 | |
| besides the point, but | 01/01/70 00:00 | |
| analog electronics... | 01/01/70 00:00 | |
| many uses | 01/01/70 00:00 | |
| As important as the scope | 01/01/70 00:00 | |
| Absolutely agree | 01/01/70 00:00 | |
| I do often use a sine burst generator | 01/01/70 00:00 | |
| That sounds like an application for ... | 01/01/70 00:00 | |
| Active ? | 01/01/70 00:00 | |
| yeah well | 01/01/70 00:00 | |
| No | 01/01/70 00:00 | |
| Shame | 01/01/70 00:00 | |
Partial oscillations | 01/01/70 00:00 |