A new analog recording process intended for use with consumer recording formats is described. The process, designated S-type, uses compression during recording and complimentary expansion during playback to increase the dynamic range of the recording system. The resulting system provides up to 24 dB of noise reduction above 400 Hz and up to 10 dB of noise reduction below 200 Hz. Design goals for the new process are discussed and performancce results are presented. Performance improvements of the new recording system when applied to the compact cassette format are presented as well.
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