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    • 2. 发明申请
    • METHOD FOR TEACHING MUSIC
    • 教学音乐的方法
    • WO2005004030A2
    • 2005-01-13
    • PCT/US2004020070
    • 2004-06-25
    • YAMAHA CORPKNUDSEN CRAIG
    • KNUDSEN CRAIG
    • G09B15/00G09B15/02G09B15/08G10D1/00G10H7/00G06F19/00
    • G09B15/08G09B15/023
    • One embodiment of the present invention relates to a method for teaching music to one or more students. The instructor's manual operation of a musical instrument controls in real-time the illumination of guide lamps on each student's musical instrument. This allows the students to visually connect the note to be played with the instructor's verbal instruction and then play the visually indicated note without having to look up at the instructor or a distant display. In another embodiment, the instructor's manual operation of his musical instrument provides a score display of the played note on each student's musical instrument. The students can visually connect the played note with the musical notation on the score display. Remote teaching over a communication network is also described as well as a removable interface for the musical instrument to assist in teaching and use of the instrument.
    • 本发明的一个实施例涉及一种向一个或多个学生教导音乐的方法。 指导员手动操作乐器,实时控制每个学生乐器上导向灯的照明。 这样就可以让学生直观地将要播放的音符与指导者的口头指令进行连接,然后播放视觉指示的音符,而无需查看教练或远程显示。 在另一个实施例中,教师对其乐器的手动操作提供了每个学生乐器上播放的音符的得分显示。 学生可以直观地将播放的音符与音乐符号显示在乐谱显示上。 还描述了通信网络上的远程教学以及用于乐器辅助教学和使用仪器的可移除接口。
    • 4. 发明公开
    • Class d amplifier circuit
    • D类放大器电路
    • KR20100107405A
    • 2010-10-05
    • KR20100025985
    • 2010-03-23
    • YAMAHA CORP
    • TSUJI NOBUAKIKAWAI HIROTAKA
    • H03F3/217
    • H03F3/2173H03F2200/03H03F2200/351H03F2200/384
    • PURPOSE: A class D amplifier circuit is provided to prevent distortion due to a low pass filter by removing a low pass filter for first and second pulse width modulation signals. CONSTITUTION: A D class amplifier circuit(100) comprises an operational amplifier(10), a triangular wave generator(30a,30b) and a PWM(Pulse Width Modulation) signal generator(40). The operational amplifier combines an input signal with a feedback signal. The operational amplifier outputs an integral signal by integrating an input signal and a feedback signal. The triangular wave generator generates a triangular wave signal with a preset amplitude and a preset phase. The PWM signal generator generates the first and second pulse width modulation signals which are modulated based on the triangular wave signal and the integral signal.
    • 目的:提供D类放大器电路,通过去除第一和第二脉宽调制信号的低通滤波器来防止低通滤波器引起的失真。 构成:D类放大器电路(100)包括运算放大器(10),三角波发生器(30a,30b)和PWM(脉宽调制)信号发生器(40)。 运算放大器将输入信号与反馈信号组合。 运算放大器通过对输入信号和反馈信号进行积分来输出积分信号。 三角波发生器产生具有预设幅度和预设相位的三角波信号。 PWM信号发生器产生基于三角波信号和积分信号调制的第一和第二脉宽调制信号。
    • 6. 发明申请
    • DIGITAL-TO-ANALOG CONVERTER
    • 数字到模拟转换器
    • WO0141310A9
    • 2002-10-03
    • PCT/JP0008248
    • 2000-11-22
    • YAMAHA CORPNORO MASAOTODA AKIHIKO
    • NORO MASAOTODA AKIHIKO
    • H03M1/68H03M1/06H03M1/72H03M1/74H03M1/76
    • H03M1/0619H03M1/687H03M1/745H03M1/765
    • A decoder (21) selects one of FETs (F0 to F255) based on higher bits, and applies one of the voltages divided by a series circuit of resistors (r0 to r255) to an operational amplifier (40). Switches (30 to 33) of a current adder circuit (22) are switched by lower bits to turn on and off FETs (35 to 38). The currents flowing through the conducting FETs are combined, and the resulting current flows to a resistor (ra), across which a voltage appears. The operational amplifier (40) combines two input voltages to produce an output. A FET (24) and FETs (35 to 38) form a current mirror circuit, which prevents the voltage width of each LSB of higher and lower bits from changing if the current (i) through the series circuit of resistors (r0 to r255) changes because of irregularities of manufacturing processes.
    • 解码器(21)基于较高位选择FET(F0〜F255)中的一个,并且将由电阻(r0〜r255)的串联电路分压的电压中的一个施加到运算放大器(40)。 电流加法器电路(22)的开关(30〜33)由低位开关导通和截止FET(35〜38)。 流过导通FET的电流被组合,并且所得到的电流流向电阻(ra),电阻出现在电阻(ra)上。 运算放大器(40)组合两个输入电压以产生输出。 FET(24)和FET(35〜38)形成电流镜电路,如果电流(i)通过电阻(r0〜r255)的串联电路,则阻止高位和低位的每个LSB的电压宽度改变, 由于制造过程的不规则而改变。
    • 8. 发明申请
    • TELEPHONE TERMINAL APPARATUS AND COMMUNICATION METHOD
    • 电话终端设备和通信方法
    • WO0115410A2
    • 2001-03-01
    • PCT/JP0005635
    • 2000-08-23
    • YAMAHA CORPTANAKA TAKAHIRO
    • TANAKA TAKAHIRO
    • G10H1/00G10K15/02H04M1/00H04M1/57H04M1/725H04M11/08H04M19/04
    • H04M19/04H04M1/57H04M1/72513H04M1/72519H04M1/72558
    • A telephone terminal apparatus is operated to exchange forward and backward voice signals between a pair of parties for conversation. In the telephone terminal apparatus, a voice processing block has a coder that codes a forward voice signal, and a decoder that decodes a backward voice signal. A communication block transmits the forward voice signal, which is outputted from the coder in a coded form, to the other party, and receives the backward voice signal from the other party in coded form which is inputted to the decoder. A tone generating block processes music data to generate a music tone signal. A controlling block operates when the music tone signal is set to sound a background music over the conversation for mixing the music tone signal generated by the tone generating block with the backward voice signal, which is outputted from the decoder, and for mixing the music tone signal generated by the tone generating block with the forward voice signal, which is inputted to the coder.
    • 电话终端装置被操作以在一对方之间交换前向和后向的语音信号以进行通话。 在电话终端装置中,语音处理块具有对前向语音信号进行编码的编码器和解码后向语音信号的解码器。 通信块以编码形式将从编码器输出的前向语音信号发送给另一方,并且从输入到解码器的编码形式的另一方接收反向语音信号。 乐音产生块处理音乐数据以产生音乐音调信号。 当音乐信号被设置为在对话中发出背景音乐以将由乐音产生块产生的音乐音调信号与从解码器输出的反向语音信号混合并且用于混合音乐音调时,控制块操作 由具有正向语音信号的乐音产生块产生的信号,其被输入到编码器。
    • 9. 发明公开
    • Class d amplifier circuit
    • D类放大器电路
    • KR20100102546A
    • 2010-09-24
    • KR20100020793
    • 2010-03-09
    • YAMAHA CORP
    • NORIMATSU TAKASHIMORISHIMA MORITO
    • H03F3/217H03K17/16H03K17/687
    • H03F3/217
    • PURPOSE: A D-class amplifier is provided to use a second capacitor as an auxiliary power by properly controlling the conduction and non-conduction state of 6 switches. CONSTITUTION: A D-class amplifier circuit(100) comprises an output unit(101), a gate driver(102), and a PWM(Pulse Width Modulation) signal generator(103). The PWM signal generator generates a pulse signal in response to an input signal. The gate driver supplies a gate control signal to each gate of a transistor in response to the pulse signal. The gate driver includes circuit such as a level shifter to ramp up and down the level of the gate control signal.
    • 目的:通过适当地控制6个开关的导通和非导通状态,提供D级放大器以使用第二电容器作为辅助电源。 构成:D级放大器电路(100)包括输出单元(101),栅极驱动器(102)和PWM(脉宽调制)信号发生器(103)。 PWM信号发生器响应于输入信号产生脉冲信号。 栅极驱动器响应于脉冲信号向晶体管的每个栅极提供栅极控制信号。 栅极驱动器包括诸如电平移位器的电路以斜坡上升和下降栅极控制信号的电平。
    • 10. 发明公开
    • Heat exchange unit
    • 热交换单元
    • KR20100088078A
    • 2010-08-06
    • KR20100006740
    • 2010-01-26
    • YAMAHA CORP
    • HORIO YUMA
    • H01L35/00
    • H01L35/30H01L23/38H01L23/427H01L2924/0002H01L2924/00
    • PURPOSE: A heat exchange unit is provided to improve the adhesive property between a heat exchanger and an insulating resin layer by preventing the damage and cracking of the insulating resin layer. CONSTITUTION: A heat exchange unit includes a thermoelectric module and a heat exchanger(11). The thermoelectric module comprises an upper electrode, a lower electrode(13), and a plurality of thermoelectric elements. A plurality of thermoelectric elements are interposed between the upper electrode and the lower electrode. The heat exchanger is made of an aluminum alloy layer or aluminum which has high thermal conductivity. The heat exchanger is attached to the upper electrode and/or the lower electrode through an insulating layer(12). The surface roughness of the heat exchanger which is connected to the insulating layer is controlled to range from 0.1um to 4.7um.
    • 目的:提供一种热交换单元,通过防止绝缘树脂层的损坏和破裂来提高热交换器与绝缘树脂层之间的粘合性能。 构成:热交换单元包括热电模块和热交换器(11)。 热电模块包括上电极,下电极(13)和多个热电元件。 多个热电元件插在上电极和下电极之间。 热交换器由具有高导热性的铝合金层或铝制成。 热交换器通过绝缘层(12)附接到上电极和/或下电极。 连接到绝缘层的热交换器的表面粗糙度被控制在0.1um至4.7um的范围内。