SOUND SYNTHESIZER SYSTEM FOR USE IN A VEHICLE HAVING AN INTERNAL COMBUSTION ENGINE
First Claim
1. A sound synthesizer system for use in a vehicle having an internal combustion engine, comprising:
- a sound synthesizer unit operable to produce sound signals;
a speed sensor for providing a speed of revolution signal indicative of speed of revolution of the internal combustion engine of the vehicle; and
an inclinometer attachable to a throttle control of the internal combustion engine which provides an inclination signal indicative of inclination of the throttle control;
wherein;
the sound synthesizer unit receives the speed of revolution signal from the speed sensor and the inclination signal from the inclinometer and uses both signals to determine what sound signals are produced thereby, the sound synthesizer unit varying the sound signals with changes in the speed of revolution signal and changes in the inclination signal;
the inclinometer has a user-adjustable attachment mechanism which enables a user to both attach the inclinometer to the throttle control and set an orientation of the inclinometer once attached; and
the sound synthesizer has an inclinometer initialisation system comprising a user-operable control which is used to start initialisation and an inclination monitoring system which monitors the inclination signal in the period following start of initialisation as the throttle control is moved through a range of movement normal thereto, the monitoring system indicating to the user whether variance in the inclination signal throughout the range of throttle control movement is acceptable and thus the inclinometer correctly attached to the throttle control or whether variance in the inclination signal throughout the range of throttle control movement is unacceptable and therefore adjustment of orientation of the inclinometer is needed.
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Accused Products
Abstract
With reference to FIG. (1), the present invention relates to a sound synthesizer system for use in a vehicle having an internal combustion engine. The system comprises a sound synthesizer unit (12) operable to produce sound signals by generating and combining signals of different frequencies, a speed sensor (10) for providing a speed of revolution signal indicative of speed of revolution of the internal combustion engine of the vehicle, and an inclinometer (11) attachable to a throttle control of the internal combustion engine which provides an inclination signal indicative of inclination of the throttle control. The sound synthesizer unit (12) receives the speed of revolution signal from the speed sensor (10) and the inclination signal from the inclinometer (11) and uses both signals to determine what sound signals are produced thereby, the sound synthesizer) unit (12) varies the sound signals with changes in the speed of revolution signal and changes in the inclination signal.
29 Citations
28 Claims
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1. A sound synthesizer system for use in a vehicle having an internal combustion engine, comprising:
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a sound synthesizer unit operable to produce sound signals; a speed sensor for providing a speed of revolution signal indicative of speed of revolution of the internal combustion engine of the vehicle; and an inclinometer attachable to a throttle control of the internal combustion engine which provides an inclination signal indicative of inclination of the throttle control;
wherein;the sound synthesizer unit receives the speed of revolution signal from the speed sensor and the inclination signal from the inclinometer and uses both signals to determine what sound signals are produced thereby, the sound synthesizer unit varying the sound signals with changes in the speed of revolution signal and changes in the inclination signal; the inclinometer has a user-adjustable attachment mechanism which enables a user to both attach the inclinometer to the throttle control and set an orientation of the inclinometer once attached; and the sound synthesizer has an inclinometer initialisation system comprising a user-operable control which is used to start initialisation and an inclination monitoring system which monitors the inclination signal in the period following start of initialisation as the throttle control is moved through a range of movement normal thereto, the monitoring system indicating to the user whether variance in the inclination signal throughout the range of throttle control movement is acceptable and thus the inclinometer correctly attached to the throttle control or whether variance in the inclination signal throughout the range of throttle control movement is unacceptable and therefore adjustment of orientation of the inclinometer is needed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A sound synthesizer system for use in a vehicle having an internal combustion engine, comprising:
- a sound synthesizer unit operable to produce sound signals;
a speed sensor for providing a speed of revolution signal indicative of speed of revolution of the internal combustion engine of the vehicle; and
an inclinometer attachable to a throttle control of the internal combustion engine which provides an inclination signal indicative of inclination of the throttle control;
wherein;
the sound synthesizer unit receives the speed of revolution signal from the speed sensor and the inclination signal from the inclinometer and uses both signals to determine what sound signals are produced thereby, the sound synthesizer unit varying the sound signals with changes in the speed of revolution signal and changes in the inclination signal; and
the synthesizer unit is provided with an adjustable filter for filtering the speed of revolution signal, the filter being adjustable to facilitate use of the synthesizer system with internal combustion engines of varying numbers of cylinders, the filter being adjustable to filter out different harmonies depending on the engine configuration so that for each engine configuration a speed of revolution signal of an appropriate frequency spectrum is allowed to pass the filter to be used to control the sound signals produced by the synthesizer unit. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
- a sound synthesizer unit operable to produce sound signals;
Specification