EP0067052A2
Expired / Lapsed
EP
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Audio sensing apparatus
Assignee: Digicor Pty Ltd
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Filing: 1982-06-04
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Granted: —
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Expires: 2002-06-04
Abstract
Abstract A A directional audio sensing device has two microphones (10, 12) which respond to audio signals and provide corresponding electrical signals. The electrical signals are compared and current is generated at a terminal 28 to drive a mot6r 30 in one or other direction according to the relative direction from which the audio signals are received. The motor is used to rotate an artificial flower. The apparatus is arranged so that the flower turns towards the source of any audio signals generated in its vicinity.
Inventors
- 👤 Walter Keith Mansel-James
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:23
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/80; G01S3/802; G01S3/803; G01S3/8034; A; A63; A63H; A63H30/00; A63H30/02; A63H30/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
A directional audio sensing apparatus comprises two or more audio sensors separated from one another and arranged to produce respective electrical signals corresponding'to audio signals received thereby, electrical circuit means arranged to compare the electrical signals and provide a directional drive signal, a prime mover arranged to respond to the drive signal and to move towards a position corresponding to the relative direction of a source of the audio signals from the apparatus.
Claim 2
Dependent Claim
73 words
A directional audio sensing apparatus comprises two or more audio sensors separated from one another and arranged to produce respective electrical signals corresponding'to audio signals received thereby, electrical circuit means arranged to compare the electrical signals and provide a directional drive signal, a prime mover arranged to respond to the drive signal and to move towards a position corresponding to the relative direction of a source of the audio signals from the apparatus.
Claim 3
Dependent Claim
29 words
A directional audio sensing apparatus according to claim 1, in which the audio sensors are arranged to respond to audio signals within a limited range of the audio frequencies.
Claim 4
Dependent Claim
46 words
A directional audio sensing apparatus according to claim 1 or 2, in which the electrical circuit is arranged to respond to electrical signals derived from the audio sensors over a limited range of values corresponding to a limited range of audio frequencies received by the microphones.
Claim 5
Dependent Claim
44 words
A directional audio sensing apparatus according to any of claims 1 to 3, in which the electrical circuit is arranged to respond to electrical signals derived from the audio sensors corresponding to a limited range of amplitudes of audio signals received by the microphones.
Claim 6
Dependent Claim
22 words
A directional audio sensing apparatus according to any of claims 1 to 4, in which the prime mover comprises an electrical motor.
Claim 7
Dependent Claim
34 words
A directional audio sensing apparatus according to any of claims 1 to 5, including means for limiting the movement of the prime mover in one or both directions beyond a predetermined position or positions.
Claim 8
Dependent Claim
38 words
A directional audio sensing apparatus according to claim 6, in which said limiting means comprises means for electrically isolating the prime mover from the electrical circuit means whenever the prime mover is at the predetermined position or positions.
Claim 9
Dependent Claim
34 words
An artificial flower, toy or like device including apparatus according to any of the preceding claims, arranged to be moved or adopt a relative displacement in response to audio signals received by the apparatus.
References Cited (Backward Citations)
No citation records indexed.
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