hello
i am a musician with an elementary knowledge of electronics and i am working on building a gesture sensor network for my instrument that will convert dc voltages of the sensors feeding into an interface which will convert the voltages to midi messages.
i will be using one of a number of commercially available interfaces that will manage that aspect of the problem. my problem is i want to build a series resistor network that will vary an input voltage (ranging from 0 to 5 v dc) dependent on which fret i close the circuit on. i will apply a voltage to the base of the strings and mount the resistors on the top edge of each fret and as i move up the neck of the instrument the voltage will change. from this the sensor interface will be able to map specific values to midi messages.
i spoke to an electronics tech at a local shop and he told me that i by building a resistor network i would be varying the current not the potential but the difficulty is that all the interfaces use this industry sensor standard of 0 - 5v dc. so can anyone point out some good reading to clarify how i can manage this problem or point me in the write direction on how to solve this. or enlighten me on how to vary voltage rather than current.
here are a few links to the paper on the controller i am using as a model and to some of the standard interfaces. just in case i have left out any relevant info or am a little vague.
thanks
phi
http://www.mistic.ece.uvic.ca/publications/2004_dafx_Esitar.pdf
http://www.electrotap.com/teabox/
i am a musician with an elementary knowledge of electronics and i am working on building a gesture sensor network for my instrument that will convert dc voltages of the sensors feeding into an interface which will convert the voltages to midi messages.
i will be using one of a number of commercially available interfaces that will manage that aspect of the problem. my problem is i want to build a series resistor network that will vary an input voltage (ranging from 0 to 5 v dc) dependent on which fret i close the circuit on. i will apply a voltage to the base of the strings and mount the resistors on the top edge of each fret and as i move up the neck of the instrument the voltage will change. from this the sensor interface will be able to map specific values to midi messages.
i spoke to an electronics tech at a local shop and he told me that i by building a resistor network i would be varying the current not the potential but the difficulty is that all the interfaces use this industry sensor standard of 0 - 5v dc. so can anyone point out some good reading to clarify how i can manage this problem or point me in the write direction on how to solve this. or enlighten me on how to vary voltage rather than current.
here are a few links to the paper on the controller i am using as a model and to some of the standard interfaces. just in case i have left out any relevant info or am a little vague.
thanks
phi
http://www.mistic.ece.uvic.ca/publications/2004_dafx_Esitar.pdf
http://www.electrotap.com/teabox/