If an audio presentation not produced by the Smithsonian is shown in the exhibition for more than three months it must be captioned. If an audio presentation not produced by the Smithsonian is shown for fewer than three months it may be accompanied by a verbatim script mounted directly next to it.
Soundtracks of ambient sounds must be identified whether captioning or a script is used. Sounds may also be identified in label text.
Signs notifying patrons of the existence of these chairs must also be posted at the entrance to the space. All signs must meet accessibility requirements.