Having said that, since everyone is using different sources and transducers at home, ideally,
the user should be doing this test in a quiet environment (sound proof booth is the gold standard, but that is likewise not accessible for most folk). Also,
the user should ideally be using a neutral source and a neutral transducer, so as not to colour any frequencies and avoid boosting or depressing certain areas in the FR. Achieving
a good seal with well-fitting earpads or eartips is quite essential, so as to keep the sub-bass frequencies intact. Poor seal = sub-bass is lost.
One other thing, before doing a hearing test, most medical institutions would recommend that the user rest their ears for 12 - 16 hours prior to doing the test. There is an entity called
temporary threshold shift (
https://andersonaudiology.com/resources/what-is-temporary-threshold-shift-tts/#:~:text=Temporary Threshold Shift (TTS) is,ear can be pushed over.), where someone who just worked or listened to loud noise/music can have temporary hearing loss, due to the hair cells being overworked.
Have you ever gone to a loud concert and then came out with some tinnitus (ringing), muffled or full sensation in the ears? Yes that is temporary threshold shift, and thankfully, it is reversible if the noise exposure is not prolonged (we will discuss below)
. So before doing this test on the Sennheiser app, it is advisable that you refrain from loud or long music sessions for 12 - 16 hours, as audiometrists frequently see so-called "abnormal" audiometries done in a clinic, but then we realize that the examinee had just worked in a noisy workplace prior to coming. When we repeat the audiometry after this worker has rested for 16 hours (noise free environment), viola, the audiometry becomes normal!
Also, if one is suffering from a flu or respiratory infection, audiometry/ear test results can possibly be spurious, as there is a eustachian tube linking the nose to the ears, and this can be blocked with secretions, and the tympanic membrane (eardrum) may not be able to move or transmit noise too well in a respiratory infection. So please do this test when you are well.