US4065647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic acoustical testing system
Assignee: Individual
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Filing: 1976-07-19
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Granted: 1977-12-27
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Expires: 1996-07-19
Abstract
Abstract An automatic acoustical testing system is described wherein a digital computer controller utilizing hard-wired program memory is used to control testing of acoustical devices, such tests being carried out by driving a device to be tested with audio sound generator means and processing the output of the device by circuit means that are under the control of the computer resulting in digital readouts of the device's output amplitude and purity as well as providing graphical representations thereof.
Inventors
- 👤 George Joseph Frye
- 👤 Leonardus Johannes Geerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:14
CPC Classifications
G; G01; G01H; G01H3/00; H; H04; H04R; H04R25/00; H04R25/30; H04R25/70
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
An automatic acoustical testing system, comprising in combination: oscillator means for generating a selected signal frequency; amplifier means for receiving said selected signal frequency and amplifying same to provide an amplified driving signal; means coupling said driving signal to an acoustical device to be tested; means receiving an output from the device to be tested and digitially processing said output; distortion analyzer circuit means receiving an output signal from said receiving and digitally processing means and further processing said output signal; digital computer processor means interfacially connected to said oscillator means, amplifier means, receiving and digitally processing means and distortion analyzer circuit means for controlling and processing analog and digital signals provided to and derived from said oscillator means, amplifier means, receiving and digitally processing means and distortion analyzer circuit means; and readout means interfacially connected to said digital computer processor means for providing readout of said analog and digital signals.
Claim 2
Dependent Claim
151 words
An automatic acoustical testing system, comprising in combination: oscillator means for generating a selected signal frequency; amplifier means for receiving said selected signal frequency and amplifying same to provide an amplified driving signal; means coupling said driving signal to an acoustical device to be tested; means receiving an output from the device to be tested and digitially processing said output; distortion analyzer circuit means receiving an output signal from said receiving and digitally processing means and further processing said output signal; digital computer processor means interfacially connected to said oscillator means, amplifier means, receiving and digitally processing means and distortion analyzer circuit means for controlling and processing analog and digital signals provided to and derived from said oscillator means, amplifier means, receiving and digitally processing means and distortion analyzer circuit means; and readout means interfacially connected to said digital computer processor means for providing readout of said analog and digital signals.
Claim 3
Dependent Claim
31 words
An automatic acoustical testing system according to claim 1 wherein said oscillator means and said amplifier means are connected by switched attenuator means interfacially controlled by said digital computer processor means.
Claim 4
Dependent Claim
30 words
An automatic acoustical testing system according to claim 1 wherein said receiving and digitally processing means comprise gain-switched amplifier means, detector means, comparator means, filter means and unit digitizer means.
Claim 5
Dependent Claim
33 words
An automatic acoustical testing system according to claim 1 wherein said distortion analyzer circuit means comprises constant amplitude amplifier means, filter means, frequency selector switch means, detector means and percent digitizer circuit means.
Claim 6
Dependent Claim
31 words
An automatic acoustical testing system according to claim 1 wherein said digital computer processor means comprises central processing unit means, interface circuit means, hard-wired program memory means and volatile memory means.
Claim 7
Dependent Claim
20 words
An automatic acoustical testing system according to claim 1 wherein said readout means comprises means for providing visual digital representations.
Claim 8
Dependent Claim
33 words
An automatic acoustical testing system according to claim 1 wherein said readout means comprises means for providing hard copy of acoustic response of said acoustical device to be tested in digital data format.
Claim 9
Dependent Claim
32 words
An automatic acoustical testing system according to claim 1 wherein said readout means comprises means for providing hard copy of acoustic response of said acoustical device to be tested in graphical format.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |