摘要:
An electronic musical instrument is provided and includes: a musical tone processing circuit processing a musical tone signal; an output jack for connecting the musical tone signal to an amplifier; a phone jack for connecting the musical tone signal to a phone; a switch for turning power supply ON or OFF; and a control circuit that determines whether power supply is necessary and selects power supply from among first, second and third power based on information indicating each power receiving state of the first to third power (respectively from AC adapter, USB cable, and battery), information indicating whether an output plug is inserted into the output jack, a phone plug is inserted into the phone jack, the USB cable is connected to USB jack, and an ON or OFF operation of the switch is performed, and information indicating a power supply ON or OFF state of the electronic musical instrument.
摘要:
Battery powered devices are provided with electrically isolated outputs. One exemplary battery device comprises at least one battery; and control electronics configured to provide a plurality of outputs from one of the at least one battery, wherein the plurality of outputs comprise at least one output that is electrically isolated from at least one other output of the plurality of outputs that each provide power to one or more of a plurality of loads. In another exemplary battery device, the control electronics are configured to provide a plurality of outputs from one of the at least one battery, and further comprises a housing assembly comprising (i) at least two surfaces, wherein the at least two surfaces have a space therebetween configured to house the control electronics and the at least one battery; or (ii) a tubular structure configured to house the control electronics and the at least one battery.
摘要:
A musical instrument, having; at least one solar panel which corresponds to the body of the musical instrument, where the at least one solar panel is outwardly facing the sun; a battery to store solar energy; a power control board; an amplifier; an interactive display for monitoring a plurality of levels corresponding to a variety of components of the musical instrument; a strap connected to the musical instrument; the strap has at least one solar panel; at least one speaker for emitting sound; a bridge; a port; a stand, where the stand has at least one solar panel; and a carrying case; where the carrying case has at least one solar panel.
摘要:
An apparatus, system, and method for an electronic handheld musical instrument that generates electronic signals for processing by a processor-based module to generate musical sounds adapted to replicate non-electronic traditional hand percussion and other handheld instruments, is provided. A piezoelectric-based trigger is secured in an enclosed volume or enclosure formed in the electronic handheld musical instrument. When manipulated by a musician in a normal fashion, freely moving beads float or travel within the enclosure of the electronic handheld musical instrument and strike against a sensitive face of the piezoelectric transducer device to create a desired sound effect.
摘要:
Apparatuses, systems and methods are presented which provide for a musical instrument direct box combined with a musical instrument tuner which may be phantom powered from an external audio system. In some embodiments, an apparatus is presented that includes a direct box (DI) module and a musical instrument tuner module coupled to the DI module. The instrument tuner module may be phantom powered based on connection to a remote system geographically distinct from the apparatus, and configured to measure the pitch of the instrument signal and mute the instrument signal simultaneously. In some example embodiments, the apparatus may also include a tuning transformer coupled to the musical instrument tuner module and the DI module, the tuning transformer configured to galvanically isolate a ground domain of the instrument signal from a ground domain of the remote system while the musical instrument tuner module measures the pitch of the musical instrument signal.
摘要:
A battery tester determines a remaining level of charge of a battery mounted within a separate electronic device having an audio jack. The battery tester includes a plug and a circuit having a high impedance input amplifier. At least one electrical contact of the plug is electrically coupled to an input of the high impedance input amplifier. The plug is removably insertable within the audio jack such that the battery of the separate electronic device is electrically connected to the input of the high impedance input amplifier. When electrically coupled to the battery, an output of the high impedance input amplifier provides a signal proportional to the remaining level of charge of the battery, whereby the remaining level of charge of the battery is obtainable by the battery tester without having to remove the battery from the electronic device.
摘要:
A contactless charging system for an electric musical instrument includes an instrument stand configured to support a musical instrument, and which includes a contactless charging port configured for connection to a power source such as an electric wall outlet. A charging circuit module is configured for incorporation within the musical instrument, and includes a second contactless charging port in physical electrical contact with circuit elements configured to provide at least one predetermined voltage to at least one rechargeable portable power supply. The second contactless charging port is configured for contactless charging engagement with the first contactless charging port, so that the second port receives power from the power source when the instrument is placed in the stand.
摘要:
A battery tester determines a remaining level of charge of a battery mounted within a separate electronic device having an audio jack. The battery tester includes a plug and a circuit having a high impedance input amplifier. At least one electrical contact of the plug is electrically coupled to an input of the high impedance input amplifier. The plug is removably insertable within the audio jack such that the battery of the separate electronic device is electrically connected to the input of the high impedance input amplifier. When electrically coupled to the battery, an output of the high impedance input amplifier provides a signal proportional to the remaining level of charge of the battery, whereby the remaining level of charge of the battery is obtainable by the battery tester without having to remove the battery from the electronic device.
摘要:
Fuel battery generates electric power using a predetermined fuel, and activation and deactivation of the electric power generation can be controlled in accordance with whether or not the fuel should be supplied to the fuel battery. The electric power is supplied to individual circuits/devices of a tone generation section, so that a tone is generated by any of the circuits/devices operating in response to operation of a performance operator unit. The circuits/devices are allowed to electrically operate for a long time with the electric power supplied by the fuel battery. In this way, an electronic musical instrument using the fuel battery can operate for a long time as compared to the conventional electronic musical instruments using a dry battery or storage battery (secondary battery).
摘要:
An audio signal processing apparatus has a plurality of nodes which include a node in operation and a node on standby for redundancy. Both the node in operation and the node on standby execute the same signal processing on input same audio signals in accordance with supplied same control signals, respectively. Only the node in operation is permitted to output the frame in which the processed audio signals are contained, and the node on standby is prohibited from outputting the frame to the audio bus. In response to a switch instruction, in a sampling cycle, the node in operation turns to be on standby and the node on standby turns to be in operation.