Audio Recorders benefit from pre- and post-emphasis which reshapes the noise spectrum to match human audibility thresholds. A 10dB increase in apparent dynamic range is realized for some digital-audio systems. A first order boost based on the CCITT J.17 pre-emphasis standard is shown to be appropriate for dynamic range expansion. A survey of peak acoustic levels present in 36 music performances is also included.
Author:
Fielder, Louis D.
Affiliation:
Dolby Laboratories, Inc., San Francisco, CA
AES Convention:
78 (May 1985)
Paper Number:
2236
Publication Date:
May 1, 1985
Subject:
Recording
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