The speech of eleven speakers of six languages was measured for peak energy in one-third octave bands, as compared to a reference level established by a vu meter. Levels as high as 0 dB at 10 kc, and -18 dB at 15 kc, were found. A tape speed of at least 7.5 ips is necessary to record all of the speakers without bandwidth restrictions, or level reduction.
https://www.aes.org/e-lib/browse.cfm?elib=660
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.
Learn more about the AES E-Library
Start a discussion about this paper!