Electronic apparatus

DETAILED DESCRIPTION An electronic musical apparatus is provided having at least one tone generation means where each tone generation means has two electrical leads.
A selective resistance means is provided by which a particular resistance value may be selected and connected between the first and the second leads of each tone generation means.
More specifically, the selective resistance means has a variable resistor length with a contact means along that length associated with each tone generation means.
The resistance value of each selective resistance means is a function of the length of the variable resistor.
The variable resistor is coupled to the first lead.
Means for selectively contacting the variable resistor along the length of the contact means is coupled to the second lead so that the selected resistance for each variable resistor is a function of the distance and physical configuration along the variable resistance between the two leads.
Each tone generation means then generates a tone having a frequency which is a function of the resistance value selected and connected between the two leads of that tone generation means.
In the preferred embodiment, the selective resistance means is configured like a normally opened switch with means being provided for contacting the continuous contact length at any point along the length of a particular selective resistance means.
The value of resistance inserted between the two leads of a selected tone generation means is then determined by the location along the continuous contact length at which an electrical contact is made.
In order to provide such a switching function, the selective resistance means preferably comprises at least one resistor strip having a continuous contact region along its length.
Each resistor strip is chosen to have a resistance value which is proportional to the length of the resistor strip.
One lead from a selected tone generation means is then attached to one end of a correspondingly selected resistor strip.
A conductor strip is spaced adjacent to and along the length of all of the resistor strips in open circuit relationship and is coupled at one of its ends to the other leads from the plurality of tone generation means