Apparatus and method for calculating signal level in decibels

Details Apparatus and method for calculating signal level in decibels Apparatus and method for calculating signal level in decibels

1988-04-01

1990-04-24

Lall, Parshotam S.

Boots, shoes, and leggings

364486, 455 67, 375 10, G01R 2926, G06F 15332

Patent

active

049204963

ABSTRACT:
An apparatus and method for calculating signal level in decibels of a digitally encoded signal. A memory has stored in it a first lookup table with values representing the square of signal amplitude. The memory also has stored in it a second lookup table with values representing signal level in decibels. The signal is sampled for a predetermined number of times and each sample is used to address the first lookup table. The read out square of signal amplitude values are summed and the sum is used to address the second table.

REFERENCES:
patent: 4503544 (1985-03-01), Musin et al.
patent: 4608647 (1986-08-01), White et al.
patent: 4752731 (1988-06-01), Toda
patent: 4806853 (1989-02-01), Fleischer et al.

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