Given the level of work you did, I am confident that you are very good. So good, that if the wire broke, you would not be able to break your way out.Snickers-is said:
I'm sure you are very good at that.Snickers-is said:BTW I have worked many years as a locksmith if it makes you feel more relaxed about it
I would be much more relaxed if you designed a secondary method to get out of that box in the event your wire thingy broke.
Good luck
John
Here is a Lyeco 8" woofer in closed box:
The simulation:
The measured 170ms file:
The measured 25ms file:
The simulation:
An externally hosted image should be here but it was not working when we last tested it.
The measured 170ms file:
An externally hosted image should be here but it was not working when we last tested it.
The measured 25ms file:
An externally hosted image should be here but it was not working when we last tested it.
Why, call you of course....Snickers-is said:So what do you do if you are inside a toilet and the beautiful brass door handle breakes when you pull it?
hmmmm...an anechoic toilet...the joke potential is endless..
Snickers-is said:
Hehe, I also got a small device we call a "cell phone". It is very popular in Norway, and we use it to communicate with other people.
Yah, I have a cell phone too..but it only woiks when I have it with me..
...normally, not in the toilet...BTW, saw the plots....color me.....jealous
Nice job...be safe..
Cheers, John
I see subtle differences between 25ms and 170ms plots 160Hz - 2khz region. Under 120hz the measurement could be a little bit innacurate because of short window for 3 cycles (which I think are needed for adequate accuracy) and differences are bigger.
For all that the result surprised me. I expected much more wilder, peaky differencies.
The similarity in low-end between simulation and 25ms window is not probably systematic and repeatable. As more acurate measurement I see 170ms window, where the differencies are big, but devaluated chamber demerit.
Snickers-is said:BTW, the uretane foam does burn very well, so the room will NOT be used to sleep in.
Hmmm...that is not very good.
One deep breath, and you'd be out..regardless of cable, buzzer, cell phone, whatever..
Can you build fiberglass filled steep angle wedges instead?
If you have to keep the fire hazard, please adopt a 2 man rule..
Cheers, John
MLS signal is not very god for very low frequency measurement. Use either a low pass filtered MLS signal or even better a Log Sine sweep.
ETF has a full function demo at:
http://www.acoustisoft.com/index.html
( this is a LP MLS signal)
The log sine sweep can be found at:
http://www.ramsete.com/aurora/
Assuming that you can find cool edit as the host program somewhere
Using these tools you should see very clearly som major standing waves in the bass region
The results so far is more a result of the limited resolution of the measurement system than the very interesting room
ETF has a full function demo at:
http://www.acoustisoft.com/index.html
( this is a LP MLS signal)
The log sine sweep can be found at:
http://www.ramsete.com/aurora/
Assuming that you can find cool edit as the host program somewhere
Using these tools you should see very clearly som major standing waves in the bass region
The results so far is more a result of the limited resolution of the measurement system than the very interesting room
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.