Aftersound

[…] the strings of an instrument, […] being strucken with the hand, do verberate the ayre in its first sound, and are reverberated by the ayre to an after-sound.

He fired the Winchester twice again, into the distance, then lowered it, the ringing aftersound of the gunfire in his ears.

Edward was awakened that night by a loud clattering noise which left an after-sound of high ringing.

And the aftersound of the music played in the light-filled drawing room would grow closer to pure silence each year, until time ended.

1881, Louis Lucien Bonaparte, “The simple sounds of all the living Slavonic languages compared with those of the principal Neo-Latin and Germano-Scandinavian Tongues,” Transactions of the Philological Society, 1880-1881, p. 377, In English I cannot hear the sound of Italian o chiuso, but only that of (o 5) followed by an aftersound, as in home, or without this aftersound, as in more.

They [gu and qu] were not groups formed of a guttural stop and the semi-vowel v, but guttural stops with a labial aftersound; the latter receiving a very much weaker articulation than the semi-vowel v.