2011
David Toop, Sinister Resonance: The Mediumship of the Listener (Bloomsbury, 2011)

In his 2011 book 
"Sinister Resonance: The Mediumship of the Listener," David Toop explores the "ghostly" and ephemeral nature of sound, positioning the listener as a medium for haunting or half-heard experiences. He identifies Max Neuhaus as a pivotal figure who shifted the focus from the sound object to the act of listening itself. 

The book is available from various booksellers, including Bloomsbury (Continuum imprint)[R4].

https://www.academia.edu/39233632/David_Toop_Ocean_of_Sound_Aether_Talk_Ambient_Sound_and_Imaginary_Worlds20190522_2770_1wgckw5#:~:text=AI.%20David%20Toop%20explores%20the%20concept%20of,in%20evoking%20memories%20and%20shaping%20imaginary%20worlds.