Just thought of measuring the speaker's t/s parameter but don't know from where to start...😕.
I read Rod Elliot's article
Measuring Loudspeaker Driver Parameters
Also, on various threads i read that u will need a rta mic,some kind of softwares and some other stuff....
And now have got more confused, which to follow??
So can anyone please tell me the correct procedure or is there any other one?
I just have a laptop😀
Your guidance would make my day😀
I read Rod Elliot's article
Measuring Loudspeaker Driver Parameters
Also, on various threads i read that u will need a rta mic,some kind of softwares and some other stuff....
And now have got more confused, which to follow??
So can anyone please tell me the correct procedure or is there any other one?
I just have a laptop😀
Your guidance would make my day😀
For t/s measurements, you don't need a microphone- it's an impedance measurement. You'll probably want measurement software and you'll need a small external amp. I use ARTA, Audiotester, or Virtins (all are very good); there's a lot of other options.
Ok, then can i follow esp's guide or is there any other easy way?
Also, i dont have an frequency generator, Can i use my laptop for producing sine wave?
Also, i dont have an frequency generator, Can i use my laptop for producing sine wave?
Thanks 🙂
Btw nice guide brother
So I can use my laptop as a function generator and connect it to a amplifier to measure t/s parameters,right?
Btw nice guide brother
So I can use my laptop as a function generator and connect it to a amplifier to measure t/s parameters,right?
Your welcome 🙂
Yes sine wave generation will be perfect over the audio band. You can also burn the Audacity files to a CDR/RW to make a test disc.
Yes sine wave generation will be perfect over the audio band. You can also burn the Audacity files to a CDR/RW to make a test disc.
As I have mentioned earlier, What setup i will need if i want to do the frequency response and other stuff from a laptop with a mic?
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First off, you'll need a very, very large room with a high ceiling if you want to measure anything under 500 Hz or so. ;-)
Alternatively, you could set up shop outside.
Understanding what you're doing is way more important than gear or software. If you understand speaker measurements, you can usually find a way around limitations, such as the room you're in.
If not, your measurements will be meaningless to others because of room reflections and imperfections in the used gear. You can still use your measurements for your own observations, since they will usually be comparable to your other measurements.
Alternatively, you could set up shop outside.
Understanding what you're doing is way more important than gear or software. If you understand speaker measurements, you can usually find a way around limitations, such as the room you're in.
If not, your measurements will be meaningless to others because of room reflections and imperfections in the used gear. You can still use your measurements for your own observations, since they will usually be comparable to your other measurements.
If your measurement mic is a USB mic, then the next step is software. If not, then you need an audio interface like the Presonus Audiobox, technical review here:
Review: PreSonus AudioBox iTwo by Paul Dormer | UCan Play
Holme Impulse is a freeware software package that has some gating options that allow measurements below 500 Hz if there are not some really strong reflections that that you can't cut out.
Basically it puts up the impulse response of your measurement and has a drag and drop box that you can use to clear reflections while the FR display changes to show you what sort of LF bandpass you have worked yourself into.
Getting measurements down to 50-100 Hz in real world rooms with reasonable ceiling heights is completely possible.
I'm sorry but that is an advertorial. That "blog" is filled with pressannouncements. And the review itself is riddled with errors (could be simple typo's), results that can't be compared with other results in the same text and it lacks completely on any useful critique.
That doesn't mean the Presonus is a bad interface. Quite the contrary.
But how does the beginner know there are reflections? And if they are "bad"?
That is the way to go for a lot of measurements. But this method needs a lot of theoretical background before you can use firs correctly. And there are a lot of youtube tuts that are simply wrong, or at least incomplete.
The Holm Audio site has a lot of good stuff on it. It'll take a while to wrestle through it, but it's worth more than a read. Other resources:
- https://www.avosound.com/en/tutorials/create-impulse-responses/basics-create-impulse-responses.php
- Impulse Responses
- mike.seddon.ca - How To: Loudspeaker Frequency Response Measurement
Getting measurements down to 50-100 Hz in real world rooms with reasonable ceiling heights is completely possible.[/QUOTE]
Depends a bit on your definition of real-world rooms. In Holland or Japan, these could be a bit smaller than what you are used to 😀
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