Audio bandwidth expansion

Details Audio bandwidth expansion Audio bandwidth expansion

2006-02-28

2011-10-11

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Sound effects

C381S096000, C381S103000, C704S500000

Reexamination Certificate

active

08036394

ABSTRACT:
Bandwidth expansion for audio signals by frequency band translations plus adaptive gains to create higher frequencies; use of a common channel for both stereo channels limits computational complexity. Adaptive cut-off frequency determination by power spectrum curve analysis, and bass expansion by both fundamental frequency illusion and equalization.

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patent: 7457757 (2008-11-01), McNeill et al.
patent: 2006/0159283 (2006-07-01), Mathew et al.

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