Recent content by putko

ok, the first case was with the same device, tbone(in the beginning of this thread) for both input and output. so this device is not suitable for multiple sweeps. (it's still very useful and moderately priced.)

This especially for John I made further testings with the tbone microphone/soudcard and here are the results Firs test (multiple) is arranged so that the output goes to PC:s headphones. So tbone is used inly for input. There are three measurements 1, 2 and 4 sweeps. The bass side is ok but not...

just a note. yoi maybe noticed the deep valley near 5khz. it comes from the the distance between element and microphone. l tested it this morning (and it is not a rew inside problem because it stays in 5khz when I started measuring from 2khz)

I did the "save all" and in my PC they show the graphs. I am not sure about the measuments. I can make new ones if needed.

I have tested the system with 48 and 44.1. Behaviour is the same. In my computer (Windows 11, Slooow) everything works good with one sample. My goal is to write a beginners guide to finnish hobbyists how to measure loudspeakers that you have planned and build with possible frugal (cheap)...

Hi Big news. I have beeb able the repeat when the anomalu happens. If I take just one sweep, everything is OK, but with multiple sweeps thera appears thos strange dips. i include here a rew saved measurements. the names tell what it is. Extra info available if needed,

Hi It is not easy to get a loop with tbone microphone. BUT no problem the 16k buffers and EXCL devices corrected the issue. Results of sweeps of different lengths are very same. no extra dips etc Thank you all for help. Now back to work (to get a listenable pair and corresponding measures)

yes. that souds goot. anyhow I will install fedora and test also with faster laptop, but thats next week

I have noticed the EXCL devices but paid no attention. In the picture are four measuments with these devices. the first number is the device buffer length from preferences. (with bigger thar 128 REW goes crazy) and the second number is sweep lebgth the low freq measusements are consistent...

REW has its own java-runtime I have mo other javas installed

Phofman I did not understand your question. I make REW measurment and the resurts are not looking about the same with different sweep lengts. When I listen these zero>SPL frequences (with REW signal generator) there are no difference. It means there is no drop in hearins sensation Here is a...

Morning I have checked that the listening is not on or off. it is OFF. Following are the results this far The comfbeffect depends on the swap length and sample rate. with 44khz it starts on lower frequences but the shape is same as in 48kht. The appears with all interfaces and loudspeakers (I...

this sounds great. in finlad now is night. I`ll test.

I have done itwith another soundcard. all ok. but with this (tbone-microphone) it neef a little cable tinkering. more afttr that

how can I find out is it or not. i havr my first windows 11. tomorrow fedora, lets see.!