Abstract: In an exemplary information processing system including an information processing section, a first loudspeaker, and a second loudspeaker, predetermined music data composed of two channels is separated into first channel music data and second channel music data. A first sound source object associated with one of the first channel music data and the second channel music data, a second sound source object associated with the other one, and a virtual microphone are placed in a virtual 3-dimensional space. The reproduction volume of a sound reproduced from the first loudspeaker, and the reproduction volume of a sound reproduced from the second loudspeaker are determined based on the direction of the virtual microphone and the positional relationship between the virtual microphone and each of the first sound source object and the second sound source object.

Abstract: In an exemplary information processing system including a plurality of sound output sections, the positional relationship among the plurality of sound output sections is recognized. In addition, a sound corresponding to a sound source object present in a virtual space is generated. The output volume of the sound for the sound source object is determined, for each sound output section, in accordance with the positional relationship among the plurality of sound output sections, and the generated sound is outputted in accordance with the output volume.

Abstract: When a music performance game starts, the user selects a part to be assigned to himself/herself. When the selection of the assigned part is completed, an ensemble starts. When the ensemble starts, the user can participate in the ensemble by performing an input operation corresponding to the assigned part. During the ensemble, history data representing the user's musical performances in chronological order is generated and stored in an external main memory. When the ensemble ends, the user can play again, changing assigned parts. At this time, as for the part currently selected by the user, the instrument is played based on the user's input, while the history data representing the user's current musical performances in chronological order is generated. Of the other parts, as for the parts that the user has selected earlier, the instruments are played automatically based on the history data.

Abstract: A game apparatus generates, based on the same sound data, a first sound signal to be output to a first sound output section, and a second sound signal to be output to a second sound output section which is physically different from the first sound output section. The generated second sound signal is a sound signal to which a predetermined acoustic effect is not added, and the first sound signal is a sound signal in which an acoustic effect is added to at least a part of sounds included in the second sound signal.

Abstract: A game system includes a game apparatus, a first output device having a first display section and a first sound output section, and a second output device having a second display section and a second sound output section. In this system, a first sound signal to be output to the first sound output section and a second sound signal to be output to the second sound output section are generated based on the same sound data. When transmitting the two sound signals, the timing to transmit the first sound signal to the first sound section is delayed by a predetermined time with respect to the timing to transmit the second sound signal to the second audio section.

Abstract: A display screen includes a plurality of display regions. A region occupation ratio of each of the plurality of display regions to a reference that is a single display region occupies an entirety of the display screen is calculated. An output sound volume of a sound associated with each display region is determined on the basis of the region occupation ratio. Then, the sound associated with each display region is outputted in accordance with the determined sound volume.

Abstract: In an exemplary information processing system including an information processing section, a first loudspeaker, and a second loudspeaker, predetermined music data composed of two channels is separated into first channel music data and second channel music data. A first sound source object associated with one of the first channel music data and the second channel music data, a second sound source object associated with the other one, and a virtual microphone are placed in a virtual 3-dimensional space. The reproduction volume of a sound reproduced from the first loudspeaker, and the reproduction volume of a sound reproduced from the second loudspeaker are determined based on the direction of the virtual microphone and the positional relationship between the virtual microphone and each of the first sound source object and the second sound source object.

Abstract: A game system includes a game apparatus, a first output device having a first display section and a first sound output section, and a second output device having a second display section and a second sound output section. In this system, a first sound signal to be output to the first sound output section and a second sound signal to be output to the second sound output section are generated based on the same sound data. When transmitting the two sound signals, the timing to transmit the first sound signal to the first sound section is delayed by a predetermined time with respect to the timing to transmit the second sound signal to the second audio section.

Abstract: In an exemplary information processing system including a plurality of sound output sections, the positional relationship among the plurality of sound output sections is recognized. In addition, a sound corresponding to a sound source object present in a virtual space is generated. The output volume of the sound for the sound source object is determined, for each sound output section, in accordance with the positional relationship among the plurality of sound output sections, and the generated sound is outputted in accordance with the output volume.

Abstract: A game apparatus generates, based on the same sound data, a first sound signal to be output to a first sound output section, and a second sound signal to be output to a second sound output section which is physically different from the first sound output section. The generated second sound signal is a sound signal to which a predetermined acoustic effect is not added, and the first sound signal is a sound signal in which an acoustic effect is added to at least a part of sounds included in the second sound signal.

Abstract: Sound data acquisition means acquires, from a sound input device, sound data representing a sound signal. First evaluation means evaluates the sound signal represented by the sound data, by using a first criterion for detecting whether or not the sound inputted into the sound input device is a breath. Second evaluation means evaluates the sound signal represented by the sound data, by using a second criterion which is different from the first criterion.

Abstract: A user can move the position of a pan flute in a horizontal direction on a screen by sliding a touch position in the horizontal direction on the screen while touching a touch panel with a stick. Moreover, when the user blows on a microphone hole, a musical sound of a pitch corresponding to a pipe of the pan flute which is displayed in an overlapping manner with a valid position display image at this time is outputted via a sound hole.

Abstract: An input is received from an input apparatus, and a message is input on the basis of the input. Then, a visual attribute of the message when confirmed and displayed on a display apparatus is set by changing the visual attribute in accordance with a length of time during which a confirmation operation of confirming the message continues. When the confirmation operation has ended, the message is confirmed and displayed on the display apparatus on the basis of the visual attribute set at the end of the confirmation operation.

Abstract: Data including character information is acquired from another apparatus, and a visual attribute of, when at least characters representing the character information displayed on a display apparatus, the characters is set by changing the visual attribute in accordance with an elapse of time. Then, the characters representing the character information are displayed on the display apparatus on the basis of the set visual attribute.

Abstract: At a time T0, prior read reproduction is started with a volume of 0. Upon starting the prior read reproduction, MIDI events containing note events are sequentially generated. Each time each of the note events is generated, note data is generated based on these note events and sequentially stored in a note pool 123. At a time T1, actual reproduction is started. After the time T1, the actual reproduction and the prior read reproduction are concurrently performed at a same speed. Accordingly, the prior read reproduction precedes invariably two bars ahead of the actual reproduction. Information pertinent to notes contained in a part from a currently played position to a position two bars ahead of the currently played position can be easily obtained from the note pool 123.

Abstract: At a time T0, prior read reproduction is started with a volume of 0. Upon starting the prior read reproduction, MIDI events containing note events are sequentially generated. Each time each of the note events is generated, note data is generated based on these note events and sequentially stored in a note pool 123. At a time T1, actual reproduction is started. After the time T1, the actual reproduction and the prior read reproduction are concurrently performed at a same speed. Accordingly, the prior read reproduction precedes invariably two bars ahead of the actual reproduction. Information pertinent to notes contained in a part from a currently played position to a position two bars ahead of the currently played position can be easily obtained from the note pool 123.

Abstract: At a time T0, prior read reproduction is started with a volume of 0. Upon starting the prior read reproduction, MIDI events containing note events are sequentially generated. Each time each of the note events is generated, note data is generated based on these note events and sequentially stored in a note pool 123. At a time T1, actual reproduction is started. After the time T1, the actual reproduction and the prior read reproduction are concurrently performed at a same speed. Accordingly, the prior read reproduction precedes invariably two bars ahead of the actual reproduction. Information pertinent to notes contained in a part from a currently played position to a position two bars ahead of the currently played position can be easily obtained from the note pool 123.

Abstract: A user can move the position of a pan flute in a horizontal direction on a screen by sliding a touch position in the horizontal direction on the screen while touching a touch panel with a stick. Moreover, when the user blows on a microphone hole, a musical sound of a pitch corresponding to a pipe of the pan flute which is displayed in an overlapping manner with a valid position display image at this time is outputted via a sound hole.

Abstract: Sound data acquisition means acquires, from a sound input device, sound data representing a sound signal. First evaluation means evaluates the sound signal represented by the sound data, by using a first criterion for detecting whether or not the sound inputted into the sound input device is a breath. Second evaluation means evaluates the sound signal represented by the sound data, by using a second criterion which is different from the first criterion.

Abstract: The game apparatus stores music data which indicates at least a pitch of each of sounds which form a melody of a predetermined piece of music and an output timing to output each of the sounds. The game apparatus sequentially detects, among the sounds included in the music data, a target sound which is a sound an output timing of which comes after start of playing by the music data. In the case where a first input is performed when or after the output timing of the target sound comes, the game apparatus outputs the target sound. On the other hand, in the case where a second or later input is performed after the output timing of the target sound comes, the game apparatus determines a pitch of an ad-lib sound, and outputs the ad-lib sound at the determined pitch.