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2. Wikipedia:Free sound resources - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Free_sound_resources

   Independent, unique sound library with royalty free & free sound effects - for video, sound design, music productions and more. CC0, CC BY Gfx Sounds: Yes Yes Sound library for professional and free sound effects downloads. CC0, CC BY Free To Use Sounds: Yes Yes Sound effects library with hiqh quality field recordings from all around the world.

3. Audiogram - Wikipedia

   en.wikipedia.org/wiki/Audiogram

   Audiogram showing a typical "noise notch" in the left ear (normal hearing in the right ear) "Conventional" pure tone audiometry (testing frequencies up to 8 kHz) is the basic measure of hearing status. [6]

4. Pure-tone audiometry - Wikipedia

   en.wikipedia.org/wiki/Pure-tone_audiometry

   The horizontal part of the curves is where the noise is inaudible. Thus, there is no masking effect on the SRT. The horizontal portion of the curve for the SNHL and CHL extends further than that for a normal hearing person, as the noise needs to become audible to become a problem. Thus, more noise has to be applied, to produce a masking effect.

5. Noise-induced hearing loss - Wikipedia

   en.wikipedia.org/wiki/Noise-induced_hearing_loss

   Noise-induced hearing loss (NIHL) is a hearing impairment resulting from exposure to loud sound.People may have a loss of perception of a narrow range of frequencies or impaired perception of sound including sensitivity to sound or ringing in the ears. [1]

6. Acoustic trauma - Wikipedia

   en.wikipedia.org/wiki/Acoustic_trauma

   Acoustic trauma is an injury to the inner ear that's often caused by exposure to a high-decibel noise. This injury can occur after exposure to a single, loud noise or from exposure to noises at significant decibels over a longer period of time. [medical citation needed] Many cases have included a period of reduced hearing after exposure to loud ...

7. Hearing loss - Wikipedia

   en.wikipedia.org/wiki/Hearing_loss

   difficulty understanding speech in the presence of background noise (cocktail party effect) sounds or speech sounding dull, muffled or attenuated; need for increased volume on television, radio, music and other audio sources; Hearing loss is sensory, but may have accompanying symptoms: [citation needed] pain or pressure in the ears; a blocked ...

8. Critical band - Wikipedia

   en.wikipedia.org/wiki/Critical_band

   Psychoacoustic tuning curves can be measured using the notched-noise method. This form of measurement can take a considerable amount of time and can take around 30 minutes to find each masked threshold. [10] In the notched-noise method the subject is presented with a notched noise as the masker and a sinusoid (pure tone) as the signal.

9. Audiometry - Wikipedia

   en.wikipedia.org/wiki/Audiometry

   The result of most audiometry is an audiogram plotting some measured dimension of hearing, either graphically or tabularly. The most common type of audiogram is the result of a pure tone audiometry hearing test which plots frequency versus amplitude sensitivity thresholds for each ear along with bone conduction thresholds at 8 standard ...