Pro Audio Design Forum

John - The lumileds may just be the ticket. What about a laser line generator like those used on power tools that is strobed? Do you need to illuminate the whole drum head? A laser line would be cool if low and parallel to the drumhead so you could see the standing wave intercept the laser... Not s...

Well round one and my first pass has been found lacking. With the LEDs LEDs pushed up their published 100 mA peak, the very narrow pulse is insufficient to make enough light. If i leave it turned on longer I can get more light but the strobe effect will be imprecise. Doing some more research there i...

I'm getting some decent light off a pair of LEDs... I just figured out why my strobe looked slow, because it was... I was syncing the strobe to my synchronous detection but that actually under samples at a slower than real time rate, so my strobe was a sub fraction of the actual note pitch. Time to ...

I already measure the phase of the standing wave using the audio return far more precisely than one could eyeball it, but this will make a cool show and tell if it works... I'm not sure the amplitude of the vibrating drumhead is large enough to see easily. Got my parts in today so I'll find out soon...

I haven't messed with a strobe light since the 60's and that one used a gas filled (xenon?) flash lamp. As i recall a cap was charged to a higher voltage then discharged through the tube. My present idea is to sync up a strobe light to my drum tuner so I can actually see the standing waves in the dr...

Wayne: You seem to be the light expert... Is there any circuitry inside 120v LED lamps or is it simple series-parallel LED chips? If it is simple it might be interesting to make strobe lights with LED lamps. JR [edit] I have some white LEDs on order so I can try to roll my own low power strobe with ...

I decided to make my test platform the same, to see if i could identify a response pattern to identify and ignore this fault, but another interesting tidbit, I could not force the mic into the position (behind the bottom metal) just by pushing on it. I literally had to take it apart and re-assemble ...

Replaced the lamp socket and learned something new from reading the instructions, after I finished. There's a knot called the underwriters knot used to secure the wires from pulling throught the bottom of the socket. http://t1.gstatic.com/images?q=tbn:ANd9GcRR5c35qflHq_vfGZwcQ0wJqEbf3LPRiQThH6MWJqIS...

PastedGraphic-2.tiff You can just see the edge of mic peeking out from the hole it is supposed to be poking through. The small hole to the left is for an index tab on the PCB that references the mic height precisely. ------ I recently has a new drum tuner customer complain that he was getting incon...

I wouldn't want you guys to think my stuff stopped breaking... lets see if i can remember what I've fixed since April. Most recently I had to replace the water tank for my under sink RO unit. A little disappointing life. The original tank seems like it lasted 15+ years before wimping out. The replac...