Abstract: Rendition style parameters for realizing various release rendition styles and/or attack rendition styles are stored in a memory. Operation-related time lengths are detected which pertain to turning-on and/or turning-off operation of a pedal operator. Any one of the release rendition style parameters is selected from the memory on the basis of the detected operation-related time length, and the release of a tone is controlled with a characteristic of the selected rendition style parameter. Alternatively, any one of the release or attack rendition style parameters is selected from the memory on the basis of a velocity of the turning-on and/or turning-off operation of the pedal operator detected operation-related time length, and the release or attack of a tone is controlled with a characteristic of the selected rendition style parameter.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: A real-play sound provider is connected with a communication terminal via a network. The user operates the communication terminal to transmit musical tone files, which include tone pitches and tone-generation timings of designated musical tones, to the real-play sound provider, so that the real-play sound provider controls a prescribed musical instrument to play automatic performance based on musical tone files, thus creating real-play sound files. The real-play sound files are created in accordance with prescribed conditions suiting user's preferences and are stored in a storage device of the real-play sound provider. Then, the real-play sound files are transmitted to the communication terminal upon user's designation of an address (e.g., URL) as necessary. Thus, the communication terminal controls a sound reproduction unit to reproduce sounds of the prescribed musical instrument, which is not possessed and played by the user.

Abstract: Rendition style parameters for realizing various release rendition styles and/or attack rendition styles are stored in a memory. Operation-related time lengths are detected which pertain to turning-on and/or turning-off operation of a pedal operator. Any one of the release rendition style parameters is selected from the memory on the basis of the detected operation-related time length, and the release of a tone is controlled with a characteristic of the selected rendition style parameter. Alternatively, any one of the release or attack rendition style parameters is selected from the memory on the basis of a velocity of the turning-on and/or turning-off operation of the pedal operator detected operation-related time length, and the release or attack of a tone is controlled with a characteristic of the selected rendition style parameter.

Abstract: There is provided a performance tone providing apparatus that enables the user to listen to musical tones sounded from a desired musical instrument according to his/her performing operation even if the desired musical instrument does not exist in the vicinity of the user. Musical tone data including data specifying pitches of musical tones is received from a communication terminal. A CPU causes a predetermined musical instrument to carry out automatic performance based on the received musical tone data. Performance tone data representative of musical tones sounded from the predetermined musical instrument by the automatic performance is transmitted to a communication terminal.

Abstract: A silent piano is available for a performance through electronic tones, and a player can give a timbre different from that of an acoustic piano to the electronic tones; when the player specifies a timbre of another acoustic musical instrument having a compass narrower than the compass of the acoustic piano, the key levers outside of the compass are never depressed in the performance, and several musical performance styles such as mute, glissando, tremolo and so fourth are assigned to the idle key levers; while the player is fingering on the keyboard, the player depresses one of the idle key levers and, thereafter, the black and white key levers in the compass, then, the electronic tones are produced in the selected musical performance style; the idle key levers are not mixed in the compass so that the player is less liable to be mistakenly depress the idle key levers.

Abstract: A silent piano is available for a performance through electronic tones, and a player can give a timbre different from that of an acoustic piano to the electronic tones; when the player specifies a timbre of another acoustic musical instrument having a compass narrower than the compass of the acoustic piano, the key levers outside of the compass are never depressed in the performance, and several musical performance styles such as mute, glissando, tremolo and so fourth are assigned to the idle key levers; while the player is fingering on the keyboard, the player depresses one of the idle key levers and, thereafter, the black and white key levers in the compass, then, the electronic tones are produced in the selected musical performance style; the idle key levers are not mixed in the compass so that the player is less liable to be mistakenly depress the idle key levers.

Abstract: A grand piano generates acoustic tones through vibrations of strings and sound board so that the acoustic tones are converted to analog audio signals at recording points over the sound board, and a group of waveform data sets are produced from the analog audio signal through sampling and analog-to-digital conversion; when electronic tones are generated, delay parameters and volume parameters are determined on the basis of differences between the recording points and tone radiating points occupied by loud speakers, the sets of waveform data series are sequentially read out from the group of waveform data sets and are modified with the delay parameters and volume parameters so that the electronic tones become close to the acoustic tones.

Abstract: There is provided a performance tone providing apparatus that enables the user to listen to musical tones sounded from a desired musical instrument according to his/her performing operation even if the desired musical instrument does not exist in the vicinity of the user. Musical tone data including data specifying pitches of musical tones is received from a communication terminal. A CPU causes a predetermined musical instrument to carry out automatic performance based on the received musical tone data. Performance tone data representative of musical tones sounded from the predetermined musical instrument by the automatic performance is transmitted to a communication terminal.

Abstract: A real-play sound provider is connected with a communication terminal via a network. The user operates the communication terminal to transmit musical tone files, which include tone pitches and tone-generation timings of designated musical tones, to the real-play sound provider, so that the real-play sound provider controls a prescribed musical instrument to play automatic performance based on musical tone files, thus creating real-play sound files. The real-play sound files are created in accordance with prescribed conditions suiting user's preferences and are stored in a storage device of the real-play sound provider. Then, the real-play sound files are transmitted to the communication terminal upon user's designation of an address (e.g., URL) as necessary. Thus, the communication terminal controls a sound reproduction unit to reproduce sounds of the prescribed musical instrument, which is not possessed and played by the user.

Abstract: In an FDD control apparatus for controlling a floppy disk drive for driving a floppy disk loaded in the floppy disk drive, a counter (34) produces a target track position signal indicative of a target track position for magnetic heads in response to an external seek direction signal and an external step signal. A counter (35) is activated when the floppy disk is loaded in the floppy disk drive to generate an internal step signal. When the floppy disk is loaded in the floppy disk drive, a counter (33) is put into an active state to produce a current track position signal indicative of an actual current track position for the magnetic heads in response to a selected seek direction signal and a selected step signal. A comparing circuit (36) compares the target track position signal with the current track position signal to produce a coincidence signal and an internal seek signal.

Abstract: An electronic synchronizer stores MIDI music data codes in a principal melody track and other MIDI music data codes in an external control track, and compares music data codes representative of depressed keys with the MIDI music data codes in the principal melody track to see whether or not the keys are timely depressed for producing the principal melody for reading out the other MIDI music data codes in the external control track in synchronism with the fingering, wherein the MIDI music data codes in the external control track are converted to instructions for an audio-visual system so that the electronic synchronizer achieves the synchronization between the fingering and the audio-visual system on the basis of the MIDI music data codes.

Abstract: A hybrid keyboard musical instrument includes two electric tone generators, music strings selectively struck with hammers driven for rotation by action mechanisms and a silent system for changing a hammer stopper between a free position and a blocking position, and a controlling system supplies instructions for changing the hammer stopper to the silent system and parameters for electronic tones to the tone generators, wherein a user registers pieces of status information in a hard disk unit, and selectively calls the pieces of status information from the hard disk unit during a performance by manipulating buttons so that the user quickly changes the status of the hybrid keyboard musical instrument.

Abstract: A hybrid keyboard musical instrument includes two electric tone generators, music strings selectively struck with hammers driven for rotation by action mechanisms and a silent system for changing a hammer stopper between a free position and a blocking position, and a controlling system supplies instructions for changing the hammer stopper to the silent system and parameters for electronic tones to the tone generators, wherein a user registers pieces of status information in a hard disk unit, and selectively calls the pieces of status information from the hard disk unit during a performance by manipulating buttons so that the user quickly changes the status of the hybrid keyboard musical instrument.

Abstract: An electronic synchronizer stores MIDI music data codes in a principal melody track and other MIDI music data codes in an external control track, and compares music data codes representative of depressed keys with the MIDI music data codes in the principal melody track to see whether or not the keys are timely depressed for producing the principal melody for reading out the other MIDI music data codes in the external control track in synchronism with the fingering, wherein the MIDI music data codes in the external control track are converted to instructions for an audio-visual system so that the electronic synchronizer achieves the synchronization between the fingering and the audio-visual system on the basis of the MIDI music data codes.

Abstract: An electric motor includes a cylindrical metal casing 2, a stator 3 accommodating in the casing, and a metal spacer 10 interposed between the casing and the stator.

Abstract: An electronic keyboard musical instrument is responsive to a step-on of a soft pedal so as to impart effects similar to those of a soft pedal of an acoustic piano to an electronic sound; a tone generator incorporated in the electronic keyboard musical instrument causes a series of waveform data codes to be read out at a higher speed so as to slightly increase the pitch of an electronic sound, an envelop generator to give a gentle envelop with a small attack and a long sustain to the electronic sound and a filter circuit to emphasize a certain high frequency component, thereby making the electronic sound to be quite close to the piano sound produced under the step-on of the soft pedal.

Abstract: In order to change an electronic sound between a piano sound generated without manipulation of a damper pedal and a piano sound generated under manipulation of the damper pedal, an electronic keyboard musical instrument assigns two tone generating channels to a depressed key for generating a fundamental tone signal representative of the piano sound generated by striking the set of strings and a resonating tone signal representative of a resonating sound generated through the resonance, and the resonating sound signal is mixed with the fundamental tone signal under manipulation of a pedal corresponding to the damper pedal, thereby making the electronic sound close to the piano sound.