Device for remote control of stereo hi-fi amplifier parameters
AssigneeSound-Mate Inc.
InventorJan P. Plummer
Life of this patent
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Abstract
A remote control system for an audio system component. An intermediate circuit is connected into the audio system interposed between the component and system amplifier through standard input/output jacks. The intermediate circuits include a first controllable attenuator for volume control, and frequency selective controllable attenuators to provide for independent bass and treble control. Control of the attenuators are effected from a remotely located control panel. Provisions for coupling the control panel and intermediate circuit through existing standard house electrical wiring, and provisions for remote on/off control are also described.
Claims17
Apparatus for remote control of audio signal parameters in an audio system an audio signal processing component for generating and amplifying said audio signal, said component having at least one record output terminal through which said audio signal is passed prior to final amplification and at least one corresponding record input terminal from which audio signals are passed to final amplification in said component, said apparatus comprising:
- a remote control circuit for generating parameter control signals indicative of desired values of said parameters;
- intermediate circuit means responsive to said parameter control signals and adapted for electrical connection between said component record output and input terminals for generating a modified audio signal input to said record input terminal having parameters in accordance with said parameter control signals;
- and
- means for communicating said parameter control signals from said remote control circuit to said intermediate circuit.
Apparatus for remote control of parameters of an audio signal within an audio signal processing component including final amplification in an audio system, said apparatus comprising:
- a remote control circuit for generating parameter control signals indicative of desired parameter values;
- an intermediate circuit connected to intercept an audio signal within said component prior to said final amplification, said intermediate circuit being responsive to said audio signal and to said parameter signal for selectively modifying the volume, bass and treble parameters of said audio signal in accordance with said parameter control signals;
- and
- said modified audio signal from the intermediate circuit being connected for said final amplification;
- means for communicating said parameter control signals from said remote control circuit to said intermediate circuit.
Apparatus for providing remote control of parameters of an audio signal generated by a component in an audio system, said audio system comprising said component and an amplifier, said apparatus comprising:
- an intermediate circuit interposed between said component and said amplifier, and a remote control panel for generating control signals to said intermediate circuit, said intermediate circuit including:
- first controllable attenuator means, responsive to said audio signal and a volume control signal from said remote panel applied thereto for controllably attenuating said audio signal in accordance with said volume control signal to provide volume control of said audio signal;
- first and second frequency selective attenuators, responsive to said attenuated audio signal and bass and treble control signals respectively applied thereto, for controllably attenuating specified frequency components of said audio signal in accordance with said bass and treble control signals;
- and
- means for combining the output signals of said frequency selective attenuators to generate an output signal, said output signal being applied as an input signal to said amplifier.
Apparatus for providing remote control of audio signal parameters in an audio system, said system comprising a component for generating said audio signal, and an amplifier, said component providing an audio signal suitable as an input to a standard tape recorder at tape recorder output terminals associated therewith, said apparatus comprising:
- a remote control panel for generating parameter control signals indicative of desired values of said parameters;
- intermediate circuit means, adapted for electrical connection to said component tape recorder output terminals and responsive to said parameter control signals, for generating a modified audio signal having parameters in accordance with said parameter control signals, said modified audio signal being applied to said amplifier;
- means for communicating said parameter control signals from said remote control panel to said intermediate circuit;
- said audio system having a plurality of channels and said intermediate circuit including separate channels corresponding to the respective channels of said audio system;
- each channel of said intermediate circuit including a controllable attenuator for volume control, said controllable attenuator attenuating said audio signal in accordance with volume parameter control signals applied thereto, and said intermediate circuit further comprising:
- relay means, responsive to actuation signals applied thereto, for selectively energizing output terminals adapted for connection to said component;
- means for generating a sum signal indicative of the sum of the magnitudes of the volume parameter control signals applied to the respective channels of said intermediate circuit, and
- comparator means for selectively generating said actuation signal to said relay means in accordance with the comparison of the magnitudes of said sum signal to a predetermined threshold value.
Apparatus for providing remote control of parameters of an audio signal generated by a component in an audio system, said apparatus comprising:
- a remote control panel for generating parameter control signals indicative of desired parameter values;
- an intermediate circuit, responsive to said audio signal and to said parameter signals, for selectively modifying the volume, bass and treble parameters of said audio signal in accordance with said parameter control signals;
- and
- means for communicating said parameter control signals from said remote control panel to said intermediate circuit;
- said audio system having a plurality of channels and said intermediate circuit including separate channels corresponding to the respective channels of said audio system;
- each channel of said intermediate circuit including a controllable attenuator for volume control, said controllable attenuator attenuating said audio signal in accordance with volume parameter control signals applied thereto, and said intermediate circuit further comprising:
- relay means, responsive to actuation signals applied thereto, for selectively energizing output terminals adapted for connection to said component;
- means for generating a sum signal indicative of the sum of the magnitudes of the volume parameter control signals applied to the respective channels of said intermediate circuit;
- and
- comparator means for selectively generating said actuation signal to said relay means in accordance with the comparison of the magnitudes of said sum signal to a predetermined threshold value.
Dependencies are inferred from the claim text.