초록 ▼

A sound producing device producing different notes when rotated. Three orthagonally mounted gravity switches produce signals corresponding to their orientation to a reference. A multiplexer or programmable counter coupled to the switches selects one output line for each combination of states of the

A sound producing device producing different notes when rotated. Three orthagonally mounted gravity switches produce signals corresponding to their orientation to a reference. A multiplexer or programmable counter coupled to the switches selects one output line for each combination of states of the switches. Each output is passed through different values of resistance so that unique frequencies result. The output of the multiplexer is coupled through an oscillator to a speaker and a tone corresponding to the frequency of the output selected is produced. Multivibrators are coupled to the switches and to the oscillator to shut off the production of sound when the device has been left at rest for a certain time period.

대표청구항 ▼

A sound producing device comprising: supporting shell means including at least two (2) removably connected sections; speaker means within said shell means; a power source mounted within said shell means; a plurality of gravity switches electrically coupled to said power source, the state of any one

A sound producing device comprising: supporting shell means including at least two (2) removably connected sections; speaker means within said shell means; a power source mounted within said shell means; a plurality of gravity switches electrically coupled to said power source, the state of any one of said switches being dependent upon the orientation of that said switch to a reference, each of said switches mounted to said shell means at a different orientation than any other of said switches; decoding means coupled to said switches for determining the state of each of said switches, said decoding means producing a unique signal for each combination of states of said switches, each of said signals having a unique frequency, said decoding means coupled to said speaker means, each of said signals producing an audible tone in said speaker of a frequency corresponding to the frequency of said signal; control means including time delay means for determining whether a tone will be produced; said control means coupled to said switches and said decoding means, said control means producing a first signal when the state of said switches remains constant for a first amount of time, said device producing a a tone only in response to said first signal; whereby different sounds are produced when the orientation of said shell to said reference is altered.