Auditory acuity suppression
Auditory suppression can be described as the experience of audible sound becoming perceived as distant, quiet and muffled. This effect can significantly decrease both the volume of noise and the general level of quality in which it is perceived. That is, it is usually described to make comprehension and to pay attention to music and other sounds difficult.
Auditory suppression is often accompanied by other coinciding effects such as auditory distortion and auditory enhancement. It is most commonly induced under the influence of moderate dosages of dissociative compounds, such as ketamine, PCP, and DXM. However, it can also occur less commonly under the influence of GABAergic depressants and antipsychotics such as alcohol and quetiapine.
Examples
File:Audio Suppression (online-audio-converter.com).ogg The sound clip above contains unedited audio followed by an edited audio suppression replication for comparison.
Psychoactive substances
Compounds within our psychoactive substance index which may cause this effect include:
Experience reports
Anecdotal reports which describe this effect within our experience index include: