A textbook for learning the fundamentals of signal processing related to voice and hearing. - Title: Signals and Systems for Speech and Hearing - Author: Steven T. Smith, Daniel J. Levitin, et al. - Publisher: KAIBUNDO - Condition: Creases on the cover - Number of pages: Approximately 400 pages The book was once wet, and there are water stains, but it does not affect reading. There are no problems with use or reading, so please purchase only if you understand. Thank you for looking.