Recent content by arivel

@sm52 I can't use java because I need asio to make e-mu 0404 work. @John Mulcahy at this point I don't understand anything anymore and my head is in a mess. let's try to take it one step at a time, can you please explain to me who or what has to play the wav file created by the REW generator...

let's see if I understood correctly. are you saying that you have to load the sweep file on REW and then play the same file with a player such as VLC or others of this type?. if this is what you have to do, in my case it doesn't work because REW takes possession of the output becoming its sole...

hi . so why nothing comes out of the speaker ?. i also tried to change the input thinking it was a mistake in selecting the input for the microphone and output for the power amplifier instead nothing changes . thanks anyway for the answers .

hi . there are two timing references .the first is that of the sweep generator (sweep A) the second is that of the measurement (sweep B) but in this case it is disabled . so in sweep A what value should I insert ?

yes exactly. I tried both with a REW generated measurement sweep file (wav) and also with third party sweep files played with VLC. What do you mean by feeling the time reference? . if you mean the speaker playing, no, I don't hear anything . if I have REW do the sweep instead, it works

I also tried to play a sweep file using VLC but nothing happens either

hello everyone . I can't get the sweep to work after creating the wav file with REW. I want to pass the sweep through the AQUA-controlled Equalizer APO in order to apply EQ in real time and get a flat SPL response that I can check via a graph created by REW. I tried changing the timing value but...

I have the possibility to buy used sound cards at a very low price (saffire, steimberg, ultralite etc.) but I have to choose between USB2 or FireWire 400. They are not recent because they are devices that are about 10 years old but even the emu0404 that I already have is not young. It remains to...

It seems that the box you propose uses the power amplifier and this is dangerous because it could burn the inputs of the sound card. I instead prefer to use the headphone output and be more relaxed.

hi. i solved the problem on the impedance measurement but after this i have to face another problem. every time i switch from the impedance measurement via headphone output-resistor to the SPL measurement in frequency via power amplifier, i have to change the circuit. instead of building the box...

hello everyone. I created the RIG to make the impedance measurement. I need this to subsequently obtain the small-thiele parameters via the known volume method. Evidently I must have done something wrong. I made two measurements, one of these was made before the three calibrations, the other...

unfortunately I don't know this data (vas)

if instead I decide to use the sealed box method how many liters should the total volume of the box be for 12" ,15", 18" speaker drivers? thanks

what do you think about this tool ?. http://tolisdiy.com/2019/08/11/audio-measurement-pre-amplifier-part-1-motivation-and-circuit-design/

interesting your system. going back to the link I posted, it seems that in reality on the REW page 3 measurement methods are proposed. 1) direct use of the audio card outputs with a 1KOhm resistor 2) use of a headphone amplifier with a 100 Ohm resistor 3) use of a power amplifier with a 33 Ohm...