Study: NCT03878875

Intervention type: DIAGNOSTIC_TEST
Intervention: Session One Test Battery
Description: Prior to noise exposure:~Test battery - High-frequency audiometry, Distortion Product Otoacoustic Emissions, Middle Ear Muscle Reflex, Speech-in-Noise test (Around 35 minutes with breaks if required)~* Extended Frequency Audiometry (\~ 8 min), 0.25-16 kHz: Participants will be asked to press the button when they hear a sound through the headphones in a soundproof booth.~* DPOAE (\~ 5 min), 0.5-10 kHz: A small tip will be placed in participants' ear and they will hear a sound. The tip measures a response from hair cells in the cochlea and they will not need to do anything.~* MEMR (\~ 8 min), 4 kHz: A small tip placed in both ears and again a sound heard, however, this sound will gradually get louder until an involuntary muscle reflex is noted.~* Speech-in-Noise Test (\~ 5 min): Participants asked to repeat back a list of words as best as they can.~* Tinnitus: Participants were also asked if they experience any tinnitus i.e. bilateral, lasting \> 5 minutes. This was reported as Y/N.

Intervention type: DIAGNOSTIC_TEST
Intervention: Session One Test Battery
Description: Prior to noise exposure:~Test battery - High-frequency audiometry, Distortion Product Otoacoustic Emissions, Middle Ear Muscle Reflex, Speech-in-Noise test (Around 35 minutes with breaks if required)~* Extended Frequency Audiometry (\~ 8 min), 0.25-16 kHz: Participants will be asked to press the button when they hear a sound through the headphones in a soundproof booth.~* DPOAE (\~ 5 min), 0.5-10 kHz: A small tip will be placed in participants' ear and they will hear a sound. The tip measures a response from hair cells in the cochlea and they will not need to do anything.~* MEMR (\~ 8 min), 4 kHz: A small tip placed in both ears and again a sound heard, however, this sound will gradually get louder until an involuntary muscle reflex is noted.~* Speech-in-Noise Test (\~ 5 min): Participants asked to repeat back a list of words as best as they can.~* Tinnitus: Participants were also asked if they experience any tinnitus i.e. bilateral, lasting \> 5 minutes. This was reported as Y/N.

Intervention type: DIAGNOSTIC_TEST
Intervention: Session Two Test Battery
Description: Exposure at single loud music event (Important that this is part of participants' normal recreational routine, and specifically require that attendance is not prompted by participation in this study): Participants to use sound level meter provided from the Audiology Department at Charing Cross Hospital or sound level meter applications to measure sound levels inside the loud event.~Morning after exposure: Repeat test battery from session one - Ideally as soon as event is over.

Intervention type: DIAGNOSTIC_TEST
Intervention: Session Two Test Battery
Description: Exposure at single loud music event (Important that this is part of participants' normal recreational routine, and specifically require that attendance is not prompted by participation in this study): Participants to use sound level meter provided from the Audiology Department at Charing Cross Hospital or sound level meter applications to measure sound levels inside the loud event.~Morning after exposure: Repeat test battery from session one - Ideally as soon as event is over.

Intervention type: DIAGNOSTIC_TEST
Intervention: Session Three Test Battery
Description: 1 week later (recovery): Repeat test battery.

Intervention type: DIAGNOSTIC_TEST
Intervention: Session Three Test Battery
Description: 1 week later (recovery): Repeat test battery.