The Holocene Epoch is the geologic epoch in which we live. It began almost 12,000 years ago, at the end of the last ice age, which closed the Pleistocene Epoch.

Due to the nature of sound recording, and recorded media in general, sounds prior to the Holocene are not optioned for curation in to the collection.

Holocene Sound maintains a small private library of books related to various fields of acoustics, bioacoustics, electro-acoustics, psychoacoustics, music and sound art.