Joystick gain control for dual independent audio signals

An audio signal waveform amplitude information control system comprising:

• a. a musical instrument having a body, neck, bridge and strings, said instrument being of a type that is picked or plucked,
• b. a multiplicity of acoustical-electrical transducer pickups providing waveform information signals, said pickups being mounted on said instrument such that one pickup, the neck pickup, is mounted closer to said instrument's neck and one pickup, the bridge pickup, is mounted closer to said instrument's bridge,
• c. two waveform information signal input points passing two different audio input signals originating from said pickups,
• d. an amplitude control means for individually modifying waveform amplitude information of said two input signals carried by said input points,
• e. a joystick suitable in size to be used by a player while picking, said joystick having two or more axes, a base and a handle, said handle being movable in relation to said base within a motion limit, and said base being mounted to said instrument's body adjacent to the picked or plucked section of said instrument's strings, so that said joystick's location is more particularly described as:
• i) beside the strings on the side of the body that hangs downward when the guitar is in a suspended playing position, and
• ii) far enough away from the strings that the handle is not blocked by the nearest string when tilted fully toward it within said motion limit, and
• iii) close enough to the strings that a player's picking hand can move the handle to any position within said motion limit while picking strings, and
• iv) approximately midway between the string bridge and the body end of the neck along an axis parallel to the strings that passes through the joystick body, and
• f. one or more waveform information signal output points, and
• g. a translation means for causing the waveform amplitude information of individual signals passing from said signal input points to said signal output points to be correspondingly varied as said joystick handle is moved in relation to said joystick base,
• whereby the amplitude information of each of said signals is independently modified according to the rotation position of its respective joystick axis, and said signals' amplitude information may be simultaneously varied by moving said joystick handle.

An audio signal waveform amplitude information control circuit comprising:

• a. two audio signal input points passing two differing waveform information signals into the circuit,
• b. one or more waveform information signal output points passing waveform information out of the circuit,
• c. a joystick having two or more axes, a base and a handle, said handle being movable in relation to said base within a motion limit, and said joystick suitable in size to be positioned on the body of a picked or plucked stringed musical instrument within reach of a player's picking hand while picking, whereby a player can move the joystick handle to any position within said motion limit while picking strings, and
• d. an amplitude control means for individually modifying waveform amplitude information of said two signals carried by said input points, and
• e. a translation means such that as said handle is moved in relation to said base, the amplitude information of said two waveform signals passing independently from said signal input points to said signal output points may be correspondingly individually varied.