Abstract: A client computer requests a client-handheld conduit file from an installation server. The client computer then receives the client-handheld conduit file from the installation server and establishing a synchronization session between the client computer and a handheld computer coupled to the client computer. The client-handheld conduit file is then transmitted to the handheld computer from the client computer, and a client-handheld conduit opened between the client computer and the handheld computer using the client-handheld conduit file. A handheld file is subsequently requested from the installation server. The client computer receives the handheld file from the installation server, and transmits the handheld file from the client computer to the handheld computer for installation on the handheld computer. This entire method is performed each time a new handheld file is installed on the handheld computer. Also, all steps following the establishing step occur without any user intervention.

Abstract: A client computer requests a client-handheld conduit file from an installation server. The client computer then receives the client-handheld conduit file from the installation server and establishing a synchronization session between the client computer and a handheld computer coupled to the client computer. The client-handheld conduit file is then transmitted to the handheld computer from the client computer, and a client-handheld conduit opened between the client computer and the handheld computer using the client-handheld conduit file. A handheld file is subsequently requested from the installation server. The client computer receives the handheld file from the installation server, and transmits the handheld file from the client computer to the handheld computer for installation on the handheld computer. This entire method is performed each time a new handheld file is installed on the handheld computer. Also, all steps following the establishing step occur without any user intervention.

Abstract: A microprocessor-based processing system for monitoring the tempo rate and rhythm in an electronic musical instrument having an automatic rhythm accompaniment unit. In a first mode of operation, the monitor displays the tempo of the rhythm accompaniment unit in numeric characters representing the number of beats per minute. In a second mode of operation, the monitor displays a numerical 1 representing the down beat in a first display device, a numerical 2 representing the second beat in adjoining display device, and successively incremented numerical integers associated with successive beats in successive numerical display devices until all numerical integers associated with beats have been displayed, thereby producing a timing display having a motion effect for synchronizing the music being played with the rhythm accompaniment tempo.

Abstract: An electronic musical instrument using continuous tone generators capable of simulating the sounds of a conventional acoustical piano. The instrument includes a gating circuit featuring a timed switch travel circuit having a double-time constant for improved control of the dynamic range from the keyboard, and a soft pedal controlling the keying voltage to produce more realistic emulation of the dynamic effects of an acoustical piano. The gating circuit produces a double-time-constant envelope of nearly harmonically related signals for a more realistic piano timbre. The tone spectrum is also controlled as a function of signal level by means of a resistor matrix feeding selected inputs of an active ladder filter, in order to reproduce timbre variation with dynamic level.

Abstract: An arpeggiator for an electronic organ, comprising a source of ramp voltage having selectively a slowly ascending and a slowly descending section or only a slowly ascending section followed by a rapid reset, an accordion-like voltage divider for said ramp voltage consisting of a cascade of diodes, each calling forth one of a group of three tone signals when conductive, or no tone signal if short circuited, circuits for determining which diodes shall be conductive and which short circuited according to which keys of an organ are actuated, the ramp voltage peaking when all conductive diodes have been ascendingly scanned by the ramp voltage, each conductive diode when scanned by the ramp voltage falling forth a gating signal for one of the tone signals called for by the actuated keys, in orderly sequence of tone signals.

Abstract: A monophonic system includes means for voicing only tones derived in response to depression of a key associated with the highest pitched note when several keys are struck at approximately the same time, regardless of the order in which the keys are struck. If several keys are released at approximately the same time, only the tones derived in response to the highest remaining activated key are voiced, regardless of the release sequence. In response to the system being played legatissimo, voiced tones gradually shift in frequency, i.e., portamento is achieved. In response to the system being played staccatissimo, voiced tones shift in frequency in discrete steps.

Abstract: Modulation systems for electrical signals representing music in which synchronous vibrato and tremolo modulations are applied to a flute signal in one channel, the vibrator being produced by a bucket brigade modulator and the tremolo by a balanced modulator in cascade with the bucket brigade modulator, and in which in a second channel tones other than flute tones, and pedal tones, are separately treated to have independent vibratos, and in which balanced modulators for modifying the amplitude of the tone signals are concurrently controlled by a common expression voltage. In one modification flute signals are vibrato modulated in opposed phases, and passed via diverse filters to a common tremolo modulator. Provision is made for combining the inputs of the channels, the outputs of which are electroacoustically transduced by separated loudspeakers. Provision is made for slowly varying the frequency of a sub-sonic modulating oscillator, which is either turned off, or operates at about 1 or about 6 Hz.

Abstract: The present system provides an automatic chord accompaniment and/or an automatic rhythm system, actuation of only one left hand operated key producing proper distribution of root, third, fifth and seventh parts of a chord and root and fifth parts of a bass line. The bass and/or chord notes may be automatically rhythmically pulsed or selectively converted to a continuous mode, while the chord notes may be rhythmically pulsed to simultaneously sound different accompaniment instruments, such as guitar, piano, banjo, etc., at different rhythmic intervals, a touch bar being provided to select a minor chord when desired. A set of musical key selector buttons is provided which automatically provides seventh chords in correct positions for a given key selection. One or more accompaniment instruments may play different rhythmic sequences when seventh chords are sounded, while actuation of two or more keys, simultaneously, defeats the chord and bass accompaniment. .Iadd.