US3591735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog voice processing for a transmission system
Assignee: Individual
•
Filing: 1968-05-13
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Granted: 1971-07-06
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Expires: 1988-05-13
Abstract
Abstract Analog voice processing for a transmission system wherein the talker volumes applied to the transmission medium is regulated with a concurrent adjustment of the volume at a preselected level to secure a desired singing margin in the system.
Inventors
- 👤 Fred A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:59
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
426 words
A voice communication system operating at a predetermined constant volume level comprising first transducer means to convert voice sounds to first representative electrical signals, said first representative electrical signals having an arbitrarily selected volume level, first hybrid means receiving said first representative electrical signal and providing an ouTput therefrom at a preselected volume, a first adjustable attenuator, a first amplifier, said first adjustable attenuator and said first amplifier operating as a first combination receiving said output from said first hybrid means and operating to provide an output signal of preselected minimum volume, a first volume compression amplifier receiving the output of said first combination, said first volume compression amplifier operating to provide a predetermined constant volume signal therefrom, first means to limit the output peaks from said first volume compression amplifier, a first expandor receiving an output from said first limiting means, said first expandor operating automatically to insert loss into said communication system in the absence of said voice sounds, said first volume compression amplifier, first limiting means and first expandor being connected respectively and serially to provide a first series arrangement, a first transmission medium receiving the output from said first expandor, second hybrid means receiving a predetermined constant volume modified by the transmission signal from the output of said first transmission medium, a second transducer receiving the output from said second hybrid means for conversion to their representative voice sounds, a third transducer positioned with said second transducer and operating to convert voice sounds to second representative electrical signals having an arbitrarily selected volume level as said first representative electrical signals, a second adjustable attenuator, a second amplifier, said second adjustable attenuator and amplifier operating as a second combination receiving said second representative electrical signals by way of said second hybrid means and providing an output signal of preselected minimum volume, a second volume compression amplifier receiving the output of said second combination and operating to provide predetermined constant volume signal therefrom, second means to peak limit the output of said second volume compression amplifier, a second expandor receiving an output from said second limiting means, said second expandor also operating as said first voice expandor, said second compression amplifier, second limiting means, and second expandor being connected respectively and serially to provide a second series arrangement, a second transmission medium receiving the output of said second expandor, and a fourth transducer receiving the output of said second transmission medium by way of said first hybrid means for conversion to their representative voice sounds, said fourth transducer being positioned with said first transducer.
Claim 2
Dependent Claim
426 words
A voice communication system operating at a predetermined constant volume level comprising first transducer means to convert voice sounds to first representative electrical signals, said first representative electrical signals having an arbitrarily selected volume level, first hybrid means receiving said first representative electrical signal and providing an ouTput therefrom at a preselected volume, a first adjustable attenuator, a first amplifier, said first adjustable attenuator and said first amplifier operating as a first combination receiving said output from said first hybrid means and operating to provide an output signal of preselected minimum volume, a first volume compression amplifier receiving the output of said first combination, said first volume compression amplifier operating to provide a predetermined constant volume signal therefrom, first means to limit the output peaks from said first volume compression amplifier, a first expandor receiving an output from said first limiting means, said first expandor operating automatically to insert loss into said communication system in the absence of said voice sounds, said first volume compression amplifier, first limiting means and first expandor being connected respectively and serially to provide a first series arrangement, a first transmission medium receiving the output from said first expandor, second hybrid means receiving a predetermined constant volume modified by the transmission signal from the output of said first transmission medium, a second transducer receiving the output from said second hybrid means for conversion to their representative voice sounds, a third transducer positioned with said second transducer and operating to convert voice sounds to second representative electrical signals having an arbitrarily selected volume level as said first representative electrical signals, a second adjustable attenuator, a second amplifier, said second adjustable attenuator and amplifier operating as a second combination receiving said second representative electrical signals by way of said second hybrid means and providing an output signal of preselected minimum volume, a second volume compression amplifier receiving the output of said second combination and operating to provide predetermined constant volume signal therefrom, second means to peak limit the output of said second volume compression amplifier, a second expandor receiving an output from said second limiting means, said second expandor also operating as said first voice expandor, said second compression amplifier, second limiting means, and second expandor being connected respectively and serially to provide a second series arrangement, a second transmission medium receiving the output of said second expandor, and a fourth transducer receiving the output of said second transmission medium by way of said first hybrid means for conversion to their representative voice sounds, said fourth transducer being positioned with said first transducer.
Claim 3
Dependent Claim
105 words
A voice communication system as described in claim 1 further including a third volume compression amplifier, a third expandor, said third volume compression amplifier and third expandor being connected respectively and serially to provide a third series arrangement with said third series arrangement being interposed between the output of said first transmission medium and said second hybrid means, a fourth volume compression amplifier, a fourth expandor, said fourth volume compression amplifier and fourth expandor being connected respectively and serially to provide a fourth series arrangement with said fourth series arrangement being interposed between the output of said second transmission medium and said first hybrid means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |