Yamaha Unveils Wii Controller-like Music Instrument
[2008-7-28]
Tag : data wireless module
Yamaha Corp showcased a stick-like device, "Muro Sensor,"that can be used to play music by sensing the direction and speedof acceleration.
The Muro Sensor was displayed as a reference exhibit at WirelessJapan 2008. Yamaha plans to use the device in the company's newproject, "Music and Health," for its music trainingclasses.
The Muro Sensor, in its about 15cm long chassis, is equipped with atriaxial acceleration sensor, a proprietary 2.4GHz wireless moduledeveloped by Nordic Semiconductor ASA of Norway, and so forth. Andit looks like Nintendo's "Wii Stick" (Wii Remote).
When a user swings the Muro Sensor, the values of the accelerationare wirelessly transmitted to the base unit of the wireless systemand, then, to the user's PC. If the PC is connected to a soundgenerator, preset sounds can be played based on those values.
Yamaha explained the reason why it used Nordic's proprietarywireless specifications as follows.
"It enables to connect up to 24 units of the Muro Sensor toone base unit at the same time," said Katsumi Matsui, whobelongs to the Center for Advanced Sound Technologies, InnovativeTechnology Division, Yamaha Corp. "Also, its transmissiondelay is less than 3ms."
The company tried other wireless specifications such as Bluetoothand ZigBee. But the wireless network provided by the main unit ofBluetooth, "Master," can handle only seven terminaldevices (called "Slaves") at the same time. And thetransmission delay of ZigBee is too long, the company said.
"Humans are sensitive to erratic rhythms," Matsui said."So, they feel uncomfortable if the lag is as long as5ms."
Each unit of the Muro Sensor has its own ID and can generatedifferent sounds.
"Suppose, for instance, a unit is held in each hand,"Matsui said. "When you swing the unit in your right hand, itbarks 'bowwow.' And you can make the sound 'meow' by using the unitin your left hand."
Because up to 24 units can be used at the same time, 12 people canplay at the same time even if each of them holds two units.
Nordic's wireless communication IC adopted this time is the"nRF24LU1" on which not only a wireless transceiver butalso a control circuit for USB 2.0 interface are integrated. Thesize of the IC is 5 × 5mm. And its top data transmissionspeeds are 2Mbps at the physical layer of the wireless system and12Mbps with the USB interface.
Yamaha Corp showcased a stick-like device, "Muro Sensor,"that can be used to play music by sensing the direction and speedof acceleration.
The Muro Sensor was displayed as a reference exhibit at WirelessJapan 2008. Yamaha plans to use the device in the company's newproject, "Music and Health," for its music trainingclasses.
The Muro Sensor, in its about 15cm long chassis, is equipped with atriaxial acceleration sensor, a proprietary 2.4GHz wireless moduledeveloped by Nordic Semiconductor ASA of Norway, and so forth. Andit looks like Nintendo's "Wii Stick" (Wii Remote).
When a user swings the Muro Sensor, the values of the accelerationare wirelessly transmitted to the base unit of the wireless systemand, then, to the user's PC. If the PC is connected to a soundgenerator, preset sounds can be played based on those values.
Yamaha explained the reason why it used Nordic's proprietarywireless specifications as follows.
"It enables to connect up to 24 units of the Muro Sensor toone base unit at the same time," said Katsumi Matsui, whobelongs to the Center for Advanced Sound Technologies, InnovativeTechnology Division, Yamaha Corp. "Also, its transmissiondelay is less than 3ms."
The company tried other wireless specifications such as Bluetoothand ZigBee. But the wireless network provided by the main unit ofBluetooth, "Master," can handle only seven terminaldevices (called "Slaves") at the same time. And thetransmission delay of ZigBee is too long, the company said.
"Humans are sensitive to erratic rhythms," Matsui said."So, they feel uncomfortable if the lag is as long as5ms."
Each unit of the Muro Sensor has its own ID and can generatedifferent sounds.
"Suppose, for instance, a unit is held in each hand,"Matsui said. "When you swing the unit in your right hand, itbarks 'bowwow.' And you can make the sound 'meow' by using the unitin your left hand."
Because up to 24 units can be used at the same time, 12 people canplay at the same time even if each of them holds two units.
Nordic's wireless communication IC adopted this time is the"nRF24LU1" on which not only a wireless transceiver butalso a control circuit for USB 2.0 interface are integrated. Thesize of the IC is 5 × 5mm. And its top data transmissionspeeds are 2Mbps at the physical layer of the wireless system and12Mbps with the USB interface.
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