Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1980-04-14
1981-12-29
Richardson, Robert L.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
179 1J, 369 87, H04R 504
Patent
active
043084249
ABSTRACT:
A source of monaural sound such as a radio receiver or record player provides an audio signal which is fed along parallel paths to a like number of speakers. In one or more paths there is a control which imparts amplification or gain to the signal. In the other path, however, a frequency dependent amplitude variation and phase delay means is interposed in the circuit. It is the purpose of this means to vary the amplitude response of that signal to introduce a bass boost of about a factor of two and a treble cut of about a factor of ten and to vary the phase shift of that signal to introduce from about a 180.degree. to about 225.degree. phase lag to the monaural signal, the amplitude response and phase lag being a function of the frequency of the signal, to impart a simulated stereo effect to the sound as heard from the plurality of speakers.
REFERENCES:
patent: 2942070 (1960-06-01), Hammond et al.
patent: 3219757 (1965-11-01), Palladino
patent: 3670106 (1972-06-01), Orban
patent: 3761631 (1973-09-01), Ito et al.
Coles Edward L.
Richardson Robert L.
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