Where it is possible to make the frequency response of headphones?

Maybe someone knows if somewhere in Peter cheaply to take readings of the frequency response of headphones?
October 8th 19 at 02:48
2 answers
October 8th 19 at 02:50
just came to mind:
— take the time ohrenitelnaya headphones your (drops, ear pads).
— remove the AFC from any distance, by any means
— take the frequency response for an ideal
— all other measurements compare with the standard

In General, it's similar to the Gypsy soup recipe starts like this:
1. Steal the pot.
2. Steal the rooster.
3...
))))
they ohrenitelnaya) - Amir commented on October 8th 19 at 02:53
October 8th 19 at 02:52
can be measured at home using a capsule of the microphone (is worth a penny, used in cellphones, cameras...)
Connect to the "komputer", generate white noise, pre-downloading the generator thereof. Also shake the equalizer (they are also missing the Internet), with the help of it and look at the frequency response.
If I am not mistaken, the headphone frequency response should not be straight.
Distance which will remove the feature take either standard or to your taste (tov. Klyachin with columns removes randomly rotating microphone, somebody else the way it does)
If we turn to the lab — will be removed on the same principle, only the microphone and the path will be more expensive, but the accuracy will increase by a few percent. But for domestic purposes it is superfluous.
This method is not taken into account, for example, that the frequency response of the sound card and the amplifier may be nonlinear. Also, perhaps, if the headphone impedance does not match the output impedance of the amplifier, some frequencies will fall.

Finally, the issue of distance to the microphone is very important — because the headphones are being worn on the head (and forming a closed space with the ear) sound one way, and if you listen from a distance — quite differently. As the author of this cimitirul? - Amir commented on October 8th 19 at 02:55
These issues are solvable. From sound cards and amplifiers frequency response is almost linear, only — if, indeed, the amplifier's high output impedance, then the low frequencies will drop. However, if these parameters are known, it can be corrected.

Simulated is quite simple — does the disk of thick cardboard, better than polystyrene foam (hard foam garbage, which is now often used instead of the foam), it cut a hole, into which is inserted a microphone, and this structure is pressed to the earpiece to measure.

Of course, the difference frequency response is, in the absence of the ear. So it is better to spend this stand measuring anything, which already have factory or other qualitatively captured frequency response, and obtain the differential frequency response between the stand and the reference. - antonette.Gislas commented on October 8th 19 at 02:58
The most reliable method is to pierce the microphone deeper into the ear and test already dressed on the head headphones. - Martina_Collier commented on October 8th 19 at 03:01

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