Acoustic wave generator employing fluid injector

An apparatus for producing an acoustic wave comprising:

• a first fluid injector to produce fluid flow;
• a first valve coupled to the fluid injector having a first control input;
• and
• a controller coupled to the first control input modulating the first valve based on an electrical signal representing a desired acoustic wave, further comprising:
• a) said first fluid injector to produce fluid flow in a first direction outward from the apparatus;
• b) a second fluid injector to produce fluid flow in a second direction inward to the apparatus and opposite to the first direction;
• c) a second valve coupled to the second fluid injector and having a second control input;
• and
• e) said controller coupled to the second control input, said controller to receive the electrical signal and to activate the first and second valves using first and second control inputs, respectively, based on the electrical signal to control a fluid flow out of the first fluid injector or into the second fluid injector, thereby creating an acoustic wave representative of the electrical signal.

An apparatus for producing an acoustic wave comprising:

• a fluid injector to generate the acoustic wave in response to a signal representative of a desired acoustic wave;
• and
• a controller directly modulating the fluid injector based on an electrical signal representing the desired acoustic wave, wherein said fluid injector comprises a first fluid injector and a second fluid injector, wherein:
• a) said first fluid injector to produce fluid flow in a first direction outward from the apparatus;
• b) said second fluid injector to produce fluid flow in a second direction inward to the apparatus and opposite to the first direction;
• c) said first fluid injector having a first control input capable of altering a fluid flow relative to a received control signal;
• d) said second fluid injector having a second control input capable of altering a fluid flow relative to said received control signal;
• e) said controller coupled to the first and second control inputs, said controller to receive the electrical signal and to control a fluid flow out of the first fluid injector or into the second fluid injector.

An apparatus for producing an acoustic wave comprising:

• a first fluid injector to produce fluid flow;
• a first valve coupled to the fluid injector having a first control input;
• and
• a controller coupled to the first control input modulating the first valve based on an electrical signal representing a desired acoustic wave, wherein said first fluid injector comprises a pump and the apparatus further comprising:
• a) said pump having an input and an output;
• b) a first cavity having an input coupled to an output of the pump, said first cavity having an output;
• c) a second cavity having an input and having an output coupled to the input of the pump;
• d) said pump to pump fluid from the second cavity to the first cavity;
• e) said first valve having an input coupled to an output of the first cavity;
• and
• f) a second valve having an output coupled to the input of the second cavity, said second valve having a control input to receive the control signal and having an input;
• wherein said controller receives the electrical signal, said controller is coupled to the control input of the first valve, said controller is coupled to the control input of the second valve, said controller generates a control signal representative of the electrical signal, thereby creating an acoustic wave representative of the electrical signal based on fluid output from the first valve and fluid input to the second valve.

An apparatus for producing an acoustic wave comprising:

• a fluid injector to generate the acoustic wave in response to a signal representative of a desired acoustic wave;
• and
• a controller directly modulating the fluid injector based on an electrical signal representing the desired acoustic wave, wherein said fluid injector comprises a first fluid injector and further comprising:
• a) a main cavity to store a repository of fluid, said main cavity having an input and an output;
• and
• b) a second fluid injector;
• wherein:
• said first fluid injector comprising a first pump, said first pump including:
• (i) a first cavity having an input and having an output;
• (ii) a first diaphragm disposed in the first cavity;
• (iii) a first diffuser having an input coupled to the output of the main cavity and having an output coupled to the input of the first cavity;
• (iv) a first nozzle having an input coupled to the output of the first cavity and having an output;
• and
• (v) a first control input to receive a control signal to control a movement of the first diaphragm;
• said second fluid injector comprising a second pump including:
• (i) a second cavity having an input and having an output;
• (ii) a second diaphragm disposed in the second cavity;
• (iii) a second diffuser having an input and having an output coupled to the input of the second cavity;
• (iv) a second nozzle having an input coupled to the output of the second cavity and having an output coupled to the input of the main cavity;
• and
• (v) a second control input to receive the control signal to control a movement of the second diaphragm;
• wherein said controller is to receive an electrical signal, said controller is coupled to the first control input of the first pump and is coupled to the second control input of the second pump, said controller is to generate a control signal representative of the electrical signal to create the acoustic wave representative of the electrical signal based on fluid output from the first nozzle caused by movement of the first diaphragm and fluid input to the second diffuser caused by movement of the second diaphragm.

An apparatus for producing an acoustic wave comprising:

• a first fluid injector to produce fluid flow;
• a first valve coupled to the fluid injector having a first control input;
• and
• a controller coupled to the first control input modulating the first valve based on an electrical signal representing a desired acoustic wave, wherein the controller outputs an analog control signal to activate the valve, and the fluid flow out of the valve is proportional to the analog control signal.