Abstract: Apparatus for altering the output of an electronic string musical instrum responsive to bending of the string comprises a compressible electrically conductive member which has an electrical resistance which varies with the degree of compression applied and may be a conductive elastomer or a piezoresistive material. First and second holders are in contact with the conductive member and a current source is secured to the first holder and the string electrode secured to the second. Bending of the string causes the application of compression to the conductive member. The change in current flow is converted into an output which is a frequency variation which corresponds to the degree of bending of the string.

Abstract: A sound source package having a sound generation circuit and a memory storing a timbre editing program used for editing the timbre parameters can be connected to an electronic musical instrument. The electronic musical instrument reads out the timbre editing program from the sound source package. A user can edit the timbre of the musical sound to be generated from the sound source package by operating operation switches of the electronic musical instrument in accordance with the timbre editing program supplied from the sound source package.

Abstract: Apparatus for generating an enveloped tone signal includes a digital portion for generating an alternating logical wave form at the desired frequency, and a start pulse for initiating the tone; and an analog portion responsive to the alternating logical wave form and the start pulse for creating the tone, the analog portion including a capacitor responsive to the start pulse for storing a charge and a switching device connected to the capacitor and responsive to the alternating logical wave form for repeatedly bleeding off a portion of the charge from the capacitor in synchronization with the alternating logical wave form, and a transducer connected to the capacitor for producing the enveloped tone signal.