A relationship of 0<.sub.1<2.sub.1 is satisfied, where .sub.1 is an angle formed between a first line which is vertical to a parallel line passing through a pivot center point and being parallel to a pivot extending direction, passes through a center point of a first portion from the center point of the first portion toward the parallel line, and a second line which is vertical, at the center point of the first portion, to a first portion extending direction, passes through the center point of the first portion toward a vertical line being vertical to the parallel line and passing through the pivot center point, and where .sub.1 is an angle formed between the first line and a third line connecting the pivot center point and the center point of the first portion from the center point of the first portion toward the pivot center point.

A relationship of 0<.sub.1<2.sub.1 is satisfied, where .sub.1 is an angle formed between a first line which is vertical to a parallel line passing through a pivot center point and being parallel to a pivot extending direction, passes through a center point of a first portion from the center point of the first portion toward the parallel line, and a second line which is vertical, at the center point of the first portion, to a first portion extending direction, passes through the center point of the first portion toward a vertical line being vertical to the parallel line and passing through the pivot center point, and where .sub.1 is an angle formed between the first line and a third line connecting the pivot center point and the center point of the first portion from the center point of the first portion toward the pivot center point.

A performance system can include a primary unit and a secondary unit. The secondary unit is provided for an electronic musical instrument that can be set to a first mode that enables performance by a single individual and a second mode that enables performance by a plurality of individuals, has connecting portions enabling connection of one or a plurality of receivers having at least a receiving function, and is able to communicate with the primary unit. The performance can also include an determining portion for determining whether or not a plurality of the receivers is connected to the connecting portion, and a transmitting portion for transmitting, to the primary unit, a notification that the second mode has been set, upon determining that a plurality of the receivers has been connected to the connecting portion. The secondary unit can include a setting portion for setting the electronic musical instrument to the second mode upon a determination that a plurality of receivers has been connected to the connecting portion.

The present invention relates to systems and methods for visual image audio composition. In particular, the present invention provides systems and methods for audio composition from a diversity of visual images and user determined sound database sources.

The present invention relates to systems and methods for visual image audio composition. In particular, the present invention provides systems and methods for audio composition from a diversity of visual images and user determined sound database sources.

Provided is a transmitter for musical instrument and a mode switching method thereof. A transmitter for musical instrument which is mounted on an electric guitar determines the electric guitar is in a not-in-use state when a continuation time in which a square sum of accelerations output from a three-axis acceleration sensor is smaller than a power-saving threshold value is longer than a power-saving transition time, and the transmitter transitions from a normal mode to an energy-saving mode. On the other hand, when the accelerations in the energy-saving mode becomes equal to or greater than a release threshold value from a state of being smaller than the release threshold value or becomes equal to or smaller than the release threshold value from a state of being greater than the release threshold value, the electric guitar is returned from the energy-saving mode to the normal mode.

A musical instrument includes a fixed member; a movable member displaceable in response to a playing operation of the musical instrument, the movable member being displaceable relative to the fixed member from a first state where the movable member is in an initial position to a second state where the movable member is displaced from the initial position; a detectable circuit including a magnetic or conductive body and disposed on the movable member; and a detector circuit including a coil disposed on the fixed member and configured to output a detection signal corresponding to a voltage that is dependent on a distance between the detectable circuit and the coil. A distance between the detectable circuit and the coil in the first state is smaller than a distance between the detectable circuit and the coil in the second state.

Signalling apparatus for a sound system, the signalling apparatus being configured for communicating with a processor, the signalling apparatus comprising: an identifier comprising a unique parameter value for identifying a sound property associated with the signalling apparatus; and an electrical contact configured to electrically connect with an electrical contact associated with the processor to communicate the parameter value with the processor, wherein the signalling apparatus is configured such that the electrical contact of the signalling apparatus is substantially fixed with respect to the electrical contact associated with the processor during activation of the sound system and/or signalling apparatus.

An electronic musical instrument includes a condition determiner that determines whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode; a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and a controller that turns off the power supply on the condition that the condition determiner determines that the OFF condition is satisfied in the automatic power-OFF mode; and the controller does not turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied.

An electronic musical instrument includes a condition determiner that determines whether an OFF condition for turning off a power supply is satisfied in an automatic power-OFF mode; a noise gate that is opened when a level of an input audio signal exceeds a threshold value and is closed when the level of the input audio signal continues being equal to or lower than the threshold value for a first predetermined period of time; and a controller that turns off the power supply on the condition that the condition determiner determines that the OFF condition is satisfied in the automatic power-OFF mode; and the controller does not turn off the power supply when the noise gate is in an open state, even in the case where the OFF condition is satisfied.