Recent content by user44455555

Hello I do ramped levels at nearfield with following method. make microphone distance 5 cm to Woofer. set volume of each Speaker you want test with REW check Levels in measure tab sp that Level - 6 have 95 db . this is at 1 meter 69 db, and Level 3(L3) so it is not so loud but loud enough to...

the group delay is also frequency dependent and there is no excess group delay or predicted group delay. you can see the groupdelay slightly change when i FR the JBL to the kali, but still much better group delay on JBL. the mdat i have upload too

thanks to your help and hint with try out filters now i understand what excess phase and predicted phase is, because when i EQ the JBL it have same excess phase as the non EQ version . only kali have very diffrent excess phase So i assume min phase is the result the frequency response of the...

you mean i should simulate with EQ the bass range of kali and compare phase then ?. this i have done with REW EQ. The Jbl 104 get FR in the Bass part as the Kali. you can see the jbl SPL change alot but the phase only slightly to the original JBL 104. the huge diffrence in phase to the kali...

also strange in the measures, the kali have at 20 hz a phase of 131 degree. this mean the recordet wave come earlier than the measure tone. at 48 hz it cross zero. the jbl have at 20 hz -46 degree. the JBL result look realistic I think this is correct explain how phase offsets work ...

I mean because the measure begin with frequency 20 hz and i choose 20 hz for unwrap wy did not both speakers at 20 hz begin with 0 degree in phase because thats start point of measure ?. if REW choose a frequency maybe 1 khz to set phase reference to 0, then the phase of both speakers at 1 khz...

I have add mdat with 2 measure same place of microphone at 1,5 cm distance so no room influence possible. I do estimate IR delay and set t0 to IR peak and set cursor to 20 hz(begin of measure) and call on overlays unwrap phase(this i notice unwrap alle phases of all speakers i enable to show) ...

please see video.it is avi extension so i need zip it because forum do not accept it. the phase jumps depend on cursor area when i call unwrap phase but it did not put the curve at 0 at cursor position. I look for a way to set 40 hz as phase reference 0 so i can compare which speaker is the...

i have done this and it give at 402 hz where on seat is 52.3 db , and seat empty is 50.3 0 . I do the meaures with 4 times repeat setting. Wy A-B does not work as i think ?. when A is at 402 hz 52.3 db and B is 50.3 then A-B is 2 db. the phase can see is very simular I also notice a problem...

Hi I measure with microphone on side near ear when i sit on chair and when chair was empty(without move microphone or speaker). this cause upto 3 db diffrences and on alot frequencies. maybe it is because i use a 32 inch computer display which is near my seat so the audio bounce between my...

here i have diffrent speaker placement and 2,2 meter (7.2 feet) https://www.audiosciencereview.com/forum/index.php?threads/measure-your-c50-in-rew-and-tell-us-how-your-bass-sounds.22567/page-11#post-2532235 mdat is upload here, because too large. results show speaker cause more influence than...

this work too, a faster way is click on measure button, click cancel(when not want measure). then change the buffer in uad audio. now after change of buffer REW bring the requester and it use the buffersize set in console. later every buffer change is recognize from REW

I notice a little problem with the buffer change in ASIO device in REW. when start REW fresh(do not measure or generator use) then change the buffer in uad audio apollo console REW did not notice new buffer when do later measures. it use the old buffer always until quit rew. it only notice a...

I also see D50 value. D50 mean time is 500 ms. it is too much for my room, so only in bass can see diffrence. maybe can set this to shorter ? in the bass there can see huge diffrence. at 54 hz see % values on bottom to compare. the worst the Kali LP6 have 40.8% . the best of course the JBL 104...

I test now more and i notice asio work when rta calc is on not correct with upto 1024 buffer size. With 2048 buffer size it work. I have screen resolution 2560x1440 144 hz and i have a scale factor of 125% in windows set. reduce to 60 hz and no scale does also not help.I notice during RTA...