S
sploo
Full Audioholic
OK, well, since my last posting, I've realised I'd bolloxed* up my amp setting: I'd forgotten to set my receiver to 'direct' mode, hence it was adding positional delays that resulted in ETF reporting weird mic to speaker distances.
I have the following connection differences to the diagram Ethan posted:
1) I don't have a mic pre amp + mic, as I'm using the RadioShack SPL meter. It looks like you were using the same thing here: http://www.ethanwiner.com/density/density.html?
2) I've not used a splitter at the amp, so I'm just driving one speaker. I figured that this wouldn't be a problem, and in fact may make it easier to take certain measurements (like recording reflections). Should I really be using both front speakers?
The cables I'm using are the finest 'got nothing suitable, bodge some connectors together to make stuff(TM)'. I could probably borrow some better ones from work tomorrow, but I'd be surprised if my cables were that bad.
If I only show 300ms, I get 'nice' sharp peaks like the graphs of the untreated room on Ethan's site, but there's still lots of noise well past that (and continuing to 1000ms). Very strange...
I must just say a big thankyou to Doug Plumb (the author of ETF) who's been taking the time to answer the many questions I've been sending him over the past couple of days.
* can I get away with using rude British slang on a US forum?
I have the following connection differences to the diagram Ethan posted:
1) I don't have a mic pre amp + mic, as I'm using the RadioShack SPL meter. It looks like you were using the same thing here: http://www.ethanwiner.com/density/density.html?
2) I've not used a splitter at the amp, so I'm just driving one speaker. I figured that this wouldn't be a problem, and in fact may make it easier to take certain measurements (like recording reflections). Should I really be using both front speakers?
The cables I'm using are the finest 'got nothing suitable, bodge some connectors together to make stuff(TM)'. I could probably borrow some better ones from work tomorrow, but I'd be surprised if my cables were that bad.
If I only show 300ms, I get 'nice' sharp peaks like the graphs of the untreated room on Ethan's site, but there's still lots of noise well past that (and continuing to 1000ms). Very strange...
I must just say a big thankyou to Doug Plumb (the author of ETF) who's been taking the time to answer the many questions I've been sending him over the past couple of days.
* can I get away with using rude British slang on a US forum?