US4025722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for recording
Assignee: Individual
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Filing: 1976-03-10
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Granted: 1977-05-24
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Expires: 1996-03-10
Abstract
Abstract The apparatus and method for making of recordings before a live audience where the performance is electrically amplified, utilizes a secondary winding coupled to a speaker voice coil for coupling to a recorder signals which represent the performers audio signals without the presence of audience noise. The speaker diaphragm and voice coil is utilized to generate a signal responsive to audience noise for cancellation of audience noise signals picked up by the amplifier system.
Inventors
- 👤 Leo Karron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:30
CPC Classifications
H; H04; H04R; H04R3/00; H04R3/04; G; G10; G10K; G10K11/00; G10K11/16; G10K11/175; G10K11/178; G10K11/1785; G10K11/1787; G10K11/17873; G10K11/17885; H04R27/00; G10K2210/00; G10K2210/10; G10K2210/108; G10K2210/30; G10K2210/301; G10K2210/3013; G10K2210/321; G10K2210/3222
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
The method of recording a primary sound program before a live audience comprising the step of: (a) converting the primary sound program to electrical signals; (b) amplifying the electrical signals; (c) energizing a loud speaker voice coil with the amplified electrical signal; (d) moving said loud speaker voice coil in response to sounds from the audience chamber to generate a magnetic field; (e) positioning a pick-up coil within the magnetic field surrounding the voice coil when the coil is electrically energized to pick up the electrical signals and signals from the audience; and (f) recording the electrical signals induced in the pick-up coil.
Claim 2
Independent Claim
103 words
The method of recording a primary sound program before a live audience comprising the step of: (a) converting the primary sound program to electrical signals; (b) amplifying the electrical signals; (c) energizing a loud speaker voice coil with the amplified electrical signal; (d) moving said loud speaker voice coil in response to sounds from the audience chamber to generate a magnetic field; (e) positioning a pick-up coil within the magnetic field surrounding the voice coil when the coil is electrically energized to pick up the electrical signals and signals from the audience; and (f) recording the electrical signals induced in the pick-up coil.
Claim 3
Independent Claim
115 words
The method of sound recording a primary sound before a live audience comprising the steps of: (a) amplifying the primary sound program; (b) reproducing the amplified primary sound program through a voice coil actuated speaker having a varying magnetic field surrounding said voice coil, the intensity of the field being a function of the signal; (c) picking up sounds from the audience by said speaker; (d) generating an eletrical field about the voice coil responsive to the signals from the audience; (e) positioning an electromagnetic pick-up coil in juxtaposition to said voice coil and electrically coupled thereto to receive signals from said voice coil; and (f) recording the signals present in said electromagnetic pick-up coil.
Claim 4
Independent Claim
115 words
The method of sound recording a primary sound before a live audience comprising the steps of: (a) amplifying the primary sound program; (b) reproducing the amplified primary sound program through a voice coil actuated speaker having a varying magnetic field surrounding said voice coil, the intensity of the field being a function of the signal; (c) picking up sounds from the audience by said speaker; (d) generating an eletrical field about the voice coil responsive to the signals from the audience; (e) positioning an electromagnetic pick-up coil in juxtaposition to said voice coil and electrically coupled thereto to receive signals from said voice coil; and (f) recording the signals present in said electromagnetic pick-up coil.
Claim 5
Dependent Claim
128 words
In an apparatus for recording sound performances before an audience, employing a microphone and amplifier for amplifying electrical signals from said microphone and a loud speaker, facing the audience, having a diaphragm and a voice coil for actuating the diaphragm responsive to signals from said amplifier and a magnetic field generating means adapted to act on the voice coil, the improvement comprising: a pick-up coil positioned within said magnetic field generated by said magnetic field generating means and adapted to have induced therein electrical signals by a magnetic field generated by electrical signals in said voice coil and including a transformer having a primary and a secondary winding with said primary winding coupled to said pick-up coil and said secondary winding adapted to be coupled to recorder means.
Claim 6
Dependent Claim
128 words
In an apparatus for recording sound performances before an audience, employing a microphone and amplifier for amplifying electrical signals from said microphone and a loud speaker, facing the audience, having a diaphragm and a voice coil for actuating the diaphragm responsive to signals from said amplifier and a magnetic field generating means adapted to act on the voice coil, the improvement comprising: a pick-up coil positioned within said magnetic field generated by said magnetic field generating means and adapted to have induced therein electrical signals by a magnetic field generated by electrical signals in said voice coil and including a transformer having a primary and a secondary winding with said primary winding coupled to said pick-up coil and said secondary winding adapted to be coupled to recorder means.
Claim 7
Dependent Claim
22 words
The apparatus of claim 3 wherein said secondary winding comprises a plurality of independent windings, each adapted for connection to recording 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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |