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公开(公告)号：JP2014112923A
公开(公告)日：2014-06-19
申请号：JP2014020871
申请日：2014-02-06
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： NORO MASAO
Abstract: PROBLEM TO BE SOLVED: To provide an audio signal processing device in which frequency characteristics do not greatly change even when synthesizing a surround signal and a main signal.SOLUTION: An L-R signal is inputted to an APF 14, and an L+R signal is inputted to a BPF 15. Circuit characteristics are set so that a frequency of the APF 14 causing a phase shift of 90 degrees and a center frequency of the BPF 15 have the same value (for example, 1 kHz). The circuit characteristics are set so that the BPF 15 shows substantially the same phase characteristics as that of the APF 14. That is, the circuit characteristics are set, in which the frequency characteristics of the BPF 15 has a gentle and broad pass band and is matched with the phase characteristics of the APF 14, thereby so as to hold phase difference between the APF 14 and the BPF 15 in a whole audible band.
Abstract translation: 要解决的问题：提供即使在合成环绕信号和主信号时频率特性也不会大幅改变的音频信号处理装置。解决方案：LR信号被输入到APF14，L + R信号为 输入到BPF 15.电路特性被设定为使得导致90度的相移和BPF 15的中心频率的APF14的频率具有相同的值（例如，1kHz）。 电路特性被设定为使得BPF15显示与APF14基本上相同的相位特性。即，设置电路特性，其中BPF 15的频率特性具有平缓和宽的通带，并且是 与APF14的相位特性匹配，从而在整个可听频带中保持APF14和BPF15之间的相位差。
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公开(公告)号：JP2012080531A
公开(公告)日：2012-04-19
申请号：JP2011195272
申请日：2011-09-07
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： YAMASHITA MASAYOSHI , NORO MASAO
Abstract: PROBLEM TO BE SOLVED: To easily emit sound generated in a vibrator to the outside when used as an electrostatic type speaker and to easily convert sound generated outside to acoustic signals when used as an electrostatic type microphone, in an electrostatic type electroacoustic transducer.SOLUTION: Elastic members 20U and 20L which are nonwoven fabric are positioned holding an electrode 10 therebetween, and vibrators 30U and 30L for which a conductive film is formed on a surface of a film having insulation quality are positioned on the outer side of the elastic members 20U and 20L. Then, on the outer side of the vibrators 30U and 30L, surface members 40U and 40L which are woven fabric for instance and have acoustic transparency are positioned. The electrode 10 is configured so as not to be easily displaced by external force compared to the vibrators 30.
Abstract translation: 要解决的问题：当用作静电型扬声器时，为了容易地将振动器中产生的声音发射到外部，并且当用作静电型麦克风时，容易将外部产生的声音转换为声学信号，在静电型电声换能器 。 解决方案：作为非织造织物的弹性构件20U和20L定位在其间保持电极10，并且在具有绝缘质量的膜的表面上形成导电膜的振动器30U和30L位于 弹性构件20U和20L。 然后，在振动器30U和30L的外侧，定位作为机织物的表面构件40U和40L，并且具有声学透明度。 电极10被构造成与振动器30相比不容易被外力移位。版权所有：（C）2012，JPO＆INPIT
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公开(公告)号：JP2012080529A
公开(公告)日：2012-04-19
申请号：JP2011195270
申请日：2011-09-07
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： YAMASHITA MASAYOSHI , NORO MASAO
Abstract: PROBLEM TO BE SOLVED: To easily emit sound generated in a vibrator to the outside when used as an electrostatic type speaker and to easily convert sound generated outside to acoustic signals when used as an electrostatic type microphone, in an electrostatic type electroacoustic transducer.SOLUTION: Elastic members 21U and 21L which are nonwoven fabric are positioned holding a vibrator 11 therebetween, and electrodes 31U and 31L having a plurality of through-holes passing through from a front surface to a back surface are positioned on the outer side of the elastic members 21U and 21L. Elastic members 22U and 22L which are nonwoven fabric are positioned on the outer side of the electrodes 31U and 31L, and vibrators 12U and 12L are positioned on the outer side of the elastic members 22U and 22L. Also, the conductive film of the vibrator 12U and the conductive film of the vibrator 12L are electrically connected, and connected to the ground GND.
Abstract translation: 要解决的问题：当用作静电型扬声器时，为了容易地将振动器中产生的声音发射到外部，并且当用作静电型麦克风时，容易将外部产生的声音转换成声学信号，在静电型电声换能器 。 解决方案：作为无纺布的弹性构件21U和21L定位在其间保持振动器11，并且具有从前表面延伸到后表面的多个通孔的电极31U和31L位于外侧 的弹性构件21U和21L。 作为无纺布的弹性部件22U，22L位于电极31U，31L的外侧，振动体12U，12L位于弹性部件22U，22L的外侧。 此外，振动器12U的导电膜和振动器12L的导电膜电连接，并连接到地GND。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2007282447A
公开(公告)日：2007-10-25
申请号：JP2006108783
申请日：2006-04-11
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： NORO MASAO
Abstract: PROBLEM TO BE SOLVED: To continue power supply to an amplifier, even if power exceeding maximum supply power is consumed temporarily in the amplifier. SOLUTION: Power from an USB terminal 1 is stepped up to 100 V by a switching regulator 10 before being charged into an electrolytic capacitor 30. After the electrolytic capacitor is charged, the power is stepped down to a power of 5 V for an amplifier 12 by a switching regulator 11. When power consumed in the amplifier 12 exceeds the maximum supply power of the USB standard, charges stored in the electrolytic capacitor 30 are discharged and stepped down to 5 V by a switching regulator 11 and then is used. Consequently, the driving of the amplifier 12 is continued with no trouble, even when the maximum supply power of the USB terminal 1 is exceeded. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：即使在放大器中暂时消耗超过最大电源功率的电力，继续向放大器供电。
解决方案：在充电到电解电容器30之前，由开关调节器10将USB端子1的电力升高到100V。在电解电容器充电之后，将功率降低到5V的功率 通过开关调节器11的放大器12.当放大器12中消耗的功率超过USB标准的最大供电功率时，存储在电解电容器30中的电荷通过开关调节器11放电并降压到5V，然后被使用 。 因此，即使当超过USB端子1的最大供电功率时，放大器12的驱动也不会发生故障。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007110324A
公开(公告)日：2007-04-26
申请号：JP2005297759
申请日：2005-10-12
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： NORO MASAO , SAITO YOZO
Abstract: PROBLEM TO BE SOLVED: To provide a speaker system and a speaker enclosure for outputting a sufficient low frequency component even when they are compact. SOLUTION: When a speaker 10 is driven, the vibration of cone paper is propagated into air in the speaker enclosure 20 and vibration parts 31, 32 are vibrated. The resonance frequency of the vibration parts 31, 32 is set to a desired value wherein the low sound frequency region is emphasized and the high sound frequency region is cut by adjusting the frequency characteristics of the speaker 10, volumes of sub chambers 23, 24, and the area and the mass of the vibration parts 31, 32. Moreover, since the resonance frequencies of the vibration parts 31, 32 can be differentiated by differentiating the volume ratio of the sub chambers 23, 24 and the area ratio and the mass ratio of the vibration parts 31, 32, a band pass characteristic with a width can be provided by overlapping the frequency characteristics of sound waves output from the vibration parts 31, 32. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种扬声器系统和扬声器外壳，用于即使在紧凑的情况下也输出足够的低频分量。 解决方案：当扬声器10被驱动时，锥形纸的振动传播到扬声器外壳20中的空气中，振动部分31,32振动。 振动部31,32的共振频率被设定为期望值，其中强调低声频区域，并通过调节扬声器10的频率特性，子腔23,24的体积来切断高声频区域， 以及振动部31,32的面积和质量。此外，由于振动部31,32的共振频率可以通过微分子室23,24的体积比和面积比和质量比来区分 通过重叠由振动部31,32输出的声波的频率特性，可以提供具有宽度的带通特性。（C）2007，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2004289649A
公开(公告)日：2004-10-14
申请号：JP2003081140
申请日：2003-03-24
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： NORO MASAO
Abstract: PROBLEM TO BE SOLVED: To provide an electromagnetically-coupled electrodynamic speaker which reproduces voices up to a low-pitched sound, hardly distorts signals, scarcely demagnetize a magnet, and is kept high in efficiency.
SOLUTION: A magnet 3, a plate 4, a primary coil 5, and a voice coil 6 are surrounded by a yoke 2. A bias magnetic flux by the magnet 3 is made to pass through a center pole 2a through an air gap GP from the plate 4. A primary coil 5 is provided around the center pole 2a at a position distant from the air gap GP. The voice coil 6 is arranged at the air gap GP. When a signal current is made to flow through the primary coil 5, a signal magnetic flux passes through a magnetic path extending through the inside of the yoke 2 without passing through the air gap GP. The signal magnetic flux does not pass through the magnet 3, so that the signals are hardly distorted, and the magnet 3 is hardly demagnetized. The rate of coupling between the primary coil 5 and the voice coil 6 is high, so that the electromagnetically coupled electrodynamic speaker grows very efficient.
COPYRIGHT: (C)2005,JPO&NCIPI-
公开(公告)号：JP2004266475A
公开(公告)日：2004-09-24
申请号：JP2003053347
申请日：2003-02-28
Applicant: Yamaha Corp , ヤマハ株式会社
Inventor： NORO MASAO , ITO SHIN
CPC classification number: H04R3/12 , G09G3/32 , G09G2300/08 , G09G2330/02 , H04R2430/20
Abstract: PROBLEM TO BE SOLVED: To drive load aligned in an array shape with satisfactory characteristics and to reduce the amount of wiring between a drive circuit and the load.
SOLUTION: In an array driving device, power amplifiers A1-An are provided for each speaker unit of a plurality of speaker units SP1-SPn for composing a speaker array, a drive signal from the power amplifier A1-An is supplied to one terminal of the speaker units SP1-SPn, and the other terminal is connected to a common line. Inverters I2, I4, ..., In are provided at the first stage of the power amplifiers A2, A4, ..., An, and the drive signal supplied to the speaker units adjacently installed becomes an opposite phase. The correlation of the drive signal between the adjacent speaker units is high, thus extremely reducing current flowing to the common line. An LED display panel can be driven by the same method.
COPYRIGHT: (C)2004,JPO&NCIPI-
公开(公告)号：JP2003121520A
公开(公告)日：2003-04-23
申请号：JP2001320938
申请日：2001-10-18
Applicant: YAMAHA CORP
Inventor： TAKAHASHI KUNIHITO , NORO MASAO
Abstract: PROBLEM TO BE SOLVED: To provide a magnetism detecting circuit that can measure the strength of magnetism, without being influenced by deterioration due to aging and the variation of ambient temperature. SOLUTION: The magnetism detecting circuit is constituted of a bias circuit 11 and a detection circuit 12. The bias circuit 11 applies a bias current which rises at a constant gradient and a bias current dropping at a constant gradient to a bias coil 13. A TMR sensor 2a is arranged inside a bias magnetic field by the bias coil 13. The detection circuit 12 outputs a clock pulse from an output terminal 43, between the time that the basic current starts rising and the time that the terminal voltage of the TMR sensor 2a reaches the threshold, and also the clock pulse from the output terminal 43, between the time that the bias current starts dropping and the time that the terminal voltage of the TMR sensor 2a reaches a threshold voltage. The strength of the magnetism is detected, based on the difference by counting these clock pulses.
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公开(公告)号：JP2003110375A
公开(公告)日：2003-04-11
申请号：JP2001298268
申请日：2001-09-27
Applicant: YAMAHA CORP
Inventor： NORO MASAO
IPC: H03F3/217
Abstract: PROBLEM TO BE SOLVED: To provide a self-operating PWM amplifier, in which mutual interferences among amplifiers are reduced and a distortion rate characteristic is improved. SOLUTION: The amplifier has a differential integrator circuit 1, comparator 2, first drive circuit 3-1, second drive circuit 3-2, first switching circuit 4-1 and second switching circuit 4-2. The circuit 1 integrates the difference between the difference between the output of a first signal source and the feedback signal of an output of an amplifier and the difference between an output of a second signal source for outputting a signal, having a phase opposite to the output of the first signal source and the feedback signal of the output of the amplifier, thereby outputting two integrated signals having different polarities. The comparator 2 compares the two integrated outputs outputted from the circuit 1 to output a PWM signal. The circuit 3-1 amplifies the output of the comparator 2 and outputs it in an inverted state. The circuit 3-2 amplifies the output of the comparator 2 and outputs it in an in-phase state. The circuit 4-1 is driven by the output of the circuit 3-1. The circuit 4-2 is driven by the output of the circuit 3-2.
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公开(公告)号：JP2002064383A
公开(公告)日：2002-02-28
申请号：JP2000248864
申请日：2000-08-18
Applicant: YAMAHA CORP
Inventor： NORO MASAO , KANEKO MAKOTO
Abstract: PROBLEM TO BE SOLVED: To provide a ΔΣ modulator in which a sampling frequency is made high and the inversion frequency of the one-bit output of a one-bit quantizer is not made high. SOLUTION: The ΔΣ modulator has an adder 16 for adding an analog signal and the output signal of an inverter 14, an integration circuit 10 for integrating the added output of the adder 16, a one-bit quantizer 12 for quantizing the integrated output and outputting a one-bit digital signal and output inversion inhibiting circuit 20 for inhibiting the re-inversion of the output signal of the one-bit quantizer when that output signal is inverted and the number of clocks outputted from that time point of the inversion is within preset N (N>=2), and the inverter 14 delays the digital signal outputted from the output inversion inhibiting circuit 20 for one sample and feeds it back to the input side.
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