please suggest a good android app for running basic speaker measurement(especially freq.response)
hello soundnovice
i hope you don't intend on using your cell phone to do that ;-)
so many deficiencies!
i hope you don't intend on using your cell phone to do that ;-)
so many deficiencies!
SpectralPro, RTA Pro, and SPL and Spectrum Analyser are what I have used on Android.
Edit: With a Samsung Infuse (with CM10 Unofficial Jellybean). The mic is quite accurate
Edit: With a Samsung Infuse (with CM10 Unofficial Jellybean). The mic is quite accurate
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my requirement is just to take basic freq.response to figure out peaks and dips. high accuracy is optional.
the frequency response of the receiver of cell phones adheres to a prescribed standard envelope and most quality phones stay within the band of 300Hz to 3kHz with several dBs discrepancy!
the speaker measurement would yield most erroneous and tragic results!
the speaker measurement would yield most erroneous and tragic results!
A very generalized statement about cell phones. Sure, many phones may have a limited range with the mic, mine handles the full spectrum. Not saying its pro quality, but it gets the job done just fine for me.
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the only meaningful way to do this with a cell phone is to find a piece of software written for the specific model and brand of cell or one that compensates for the specific response of the mic and its preamp since equalization is usually the case with communication equipment.
Are there any news, any good android app for loudspeakers measurment ?
maybe something like holmimpulse on win ?
tnx
maybe something like holmimpulse on win ?
tnx
I saw one a while back that allows you to calibrate it against a known accurate cal'd mic. I don't remember what it was called. It cost about $7. Once you've done that it should be pretty useful.
I don't know how that work, but maybe,
if we can connect (to android device) external USB sound card with audio input and output, like asus xsonar U3 (cheap usb sound card)
then we can connect something like behringer ECM8000 with preamp which is good enough for measurments
there is just need for software that can work similar as holmi 🙂
if we can connect (to android device) external USB sound card with audio input and output, like asus xsonar U3 (cheap usb sound card)
then we can connect something like behringer ECM8000 with preamp which is good enough for measurments
there is just need for software that can work similar as holmi 🙂
Thes articles may shed some light:
CDC - NIOSH Science Blog – So How Accurate Are These Smartphone Sound Measurement Apps?
Evaluation of smartphone sound measurement applicationsa)
These are relevant apps:
https://play.google.com/store/apps/details?id=com.julian.apps.AudioTool&hl=en
https://play.google.com/store/apps/details?id=radonsoft.net.rta&hl=en
There are also a number of external measurement mics that are compatible with some smart phones:
Dayton Audio iMM-6 Calibrated Measurement Microphone for iPhone iPad Tablet and Android
and some user experiences:
RTA on smartphone? Good Mic desired. - Car Audio | DiyMobileAudio.com | Car Stereo Forum
Thanks for the info Arnyk.
What I had in mind was to get a calibratable android app. for my Samsung Exhibit phone, and simply match it to the results of a high end mic and RTA that a rich friend has, while we mic high end speakers with pink noise.
Above about 8kHZ, slight movements of the mic can create big differences in readings, even with the best mics, so I take those readings with a big grain of salt. If you're developing speaker drivers, you need everything to be perfect, but if you're just adjusting levels on an active crossover, or looking for typical room effects (which are usually the worse in the lower midrange/upper bass), then it should still be useful enough.
What I had in mind was to get a calibratable android app. for my Samsung Exhibit phone, and simply match it to the results of a high end mic and RTA that a rich friend has, while we mic high end speakers with pink noise.
Above about 8kHZ, slight movements of the mic can create big differences in readings, even with the best mics, so I take those readings with a big grain of salt. If you're developing speaker drivers, you need everything to be perfect, but if you're just adjusting levels on an active crossover, or looking for typical room effects (which are usually the worse in the lower midrange/upper bass), then it should still be useful enough.
Hifi-Apps Speaker Setup 2 - Apps on Google Play
"Hifi-Apps Speaker Setup 2"
Here is one that works well.
You can calibrate the internal mic, with a calibrated external (Dayton Audio iMM-6 works well).
In any case, it produces useful relative results, even without a calibration.
You may check this article for a reference > Evaluation of smartphone sound measurement applications (apps) using external microphones – A follow-up Study
"Hifi-Apps Speaker Setup 2"
Here is one that works well.
You can calibrate the internal mic, with a calibrated external (Dayton Audio iMM-6 works well).
In any case, it produces useful relative results, even without a calibration.
You may check this article for a reference > Evaluation of smartphone sound measurement applications (apps) using external microphones – A follow-up Study
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