LED level meter

Details LED level meter LED level meter

1984-06-25

1985-07-30

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Gaseous discharge

324 96, 324103P, 324114, G01R 1900, G01R 100

Patent

active

045324727

ABSTRACT:
A stereo sound level display device includes a single array of light emitting diodes aligned in a line. The left channel sound signal level is detected to display the left channel sound signal level from the left end of the light emitting diode array. At the same time, the right channel sound signal level is detected to display the right channel sound signal level from the right end of the light emitting diode array.

REFERENCES:
patent: 4166245 (1979-08-01), Roberts
patent: 4183025 (1980-01-01), Kutaragi et al.
Lawrence, R. W.; "Stereo Digital PPM . . . "; Practical Electronics; vol. 12; No. 10; Oct. 1976; pp. 808-816.

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