Audio system for vehicular applications
AssigneeConcept Enterprises, Inc.
InventorDavid Kwang
Life of this patent
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Abstract
Electronic crossover modules and systems in accordance with the invention employ a set of crossover channels in each module together with internal input interconnections which enable input signals to be serially intercoupled but cutoff points to be separately adjustable. Each module comprises two independently settable, variably interconnectable high pass channels and a third low pass channel which also is independently settable, and which can receive signals from the first two channels and/or a different module and also transmit signals to a different module. Using the available input interconnections and a frequency multiplier control in the first channel, great versatility in bi-amp and tri-amp with two channel and/or four channel operation is achieved.
Claims16
An electronic crossover system for use in a variety of multi-amplifier configurations receiving signals from an audio signal source, comprising:
- means defining first, second and third signal channels, each having an input and an output;
- first switch means for selectively coupling the inputs of the first and second channels in parallel;
- means for summing the inputs of the first and second channels at the input of the third channel;
- first adjustable high pass crossover means coupled in the first channel;
- second adjustable high pass crossover means coupled in the second channel;
- first adjustable low pass crossover means coupled in the third channel, wherein each of the crossover means is independently adjustable of the other;
- and
- selectively actuable high pass crossover means disposed in the first signal channel for providing an adjustable high pass crossover at a substantially higher frequency than the first high pass crossover means.
An electronic crossover module for versatile interconnection of input signal sources and separate amplifier/speaker sets comprising:
- means in the crossover module for defining first, second and third signal channels having separately adjustable crossover points;
- input signal interconnection means including first and second channel input port means and third channel input/output port means, and means for coupling the input of the first and second channels to the input of the third channel;
- and
- means for selectively coupling the input of the first signal channel to the input of the second signal channel, and wherein signal inputs at the first and second channels are concurrently providable as outputs at the third channel input/output port means and as inputs at the third channel, and alternatively combinable with inputs to the third channel input/output port means as signals for the third channel.
A versatile crossover interconnection and amplification system for vehicular audio systems to enable external resonances arising from the vehicle interior geometry to be compensated in achieving a flat system response, comprising:
- first amplifier/speaker means providing at least one output in a first frequency range;
- second amplifier/speaker means providing at least one output in a second frequency range lower than the first;
- electronic crossover means receiving a first input audio signal and providing input signals to both amplifier/speaker means, the electronic crossover means comprising separate crossover means in different channels, one for each amplifier speaker means;
- a summing circuit, the summing circuit transferring the first input audio signal to a buffer stage, the buffer stage having a first output, the first output transferring the first input audio signals to the electronic crossover means corresponding to the second amplifier/speaker means;
- and
- a mixed input or output port, the mixed input or output port being capable of receiving the first output from the buffer stage, the mixed input or output port being capable of transferring the first input audio signal to a device external to the crossover interconnection and amplification system.
A versatile crossover interconnection and amplification system for vehicular audio systems to enable external resonances arising from the vehicle interior geometry to be compensated in achieving a flat system response, comprising:
- first amplifier/speaker means comprising a first tweeter channel and a second midrange channel each including separate selectively variable high pass filter means;
- second amplifier/speaker means comprising a third woofer or subwoofer channel including selectively variable low pass filter means,
- electronic crossover means receiving an input audio signal and providing input signals to both amplifier/speaker means, the electronic crossover means comprising:
- (a) separate crossover means in each of the three channels;
- (b) controllable means intercoupling the inputs of the different channels for alternatively providing inputs or outputs at one of the channels such that the electronic crossover means can be interconnected serially with other electronic crossover means in other amplification systems to provide multiple crossovers;
- (c) at least a first input for the first amplifier speaker means;
- (d) input/output means for the second amplifier/speaker means;
- (e) selectable parallel coupling means between the separate channels;
- (f) the crossover means in the first and second channels comprising individually adjustable high pass crossovers, the crossover means in the third channel comprising an individually adjustable low pass crossover;
- (g) first switch means selectively intercoupling the first and second channels, circuit means coupling the first and second channels to the third channel, separate interconnection ports coupled to the inputs of the individual channels;
- and
- (h) means at the interconnection port for the third channel for (1) feeding signals out thereat from the first and second channels, and (2) alternatively combining inputs received thereat with signals from the first and second channels.
Dependencies are inferred from the claim text.