专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4504870A Automatic level adjustment with means for minimizing drop-out effects 失效
标题翻译：自动电平调节，具有最大限度地减少掉落效应的手段
公开(公告)号：US4504870A
公开(公告)日：1985-03-12
申请号：US399571
申请日：1982-07-19
申请人： Masatsugu Kitamura , Mamoru Inami , Yoshiaki Tanaka , Zenju Otsuki
发明人： Masatsugu Kitamura , Mamoru Inami , Yoshiaki Tanaka , Zenju Otsuki
IPC分类号： G11B5/027 , G11B20/02 , G11B20/04 , G11B20/18 , G11B15/02 , G11B27/36
CPC分类号： G11B20/182 , G11B20/025 , G11B20/04
摘要： A test signal is recorded on a magnetic tape prior to the recording of audio signals and reproduced to allow detection of an average value of the magnitude of the reproduced test signal. A drop-out in the reproduced signal is detected if it occurs during the process of deriving the average value. If the drop-out is not detected, a difference between the average value and a reference value is detected to adjust the signal level of the recorded test signal so that the difference reduces substantially to zero. If a drop-out is detected the average value is renewed by repeating the process of recording and reproducing the test signal.
摘要翻译：在记录音频信号之前将测试信号记录在磁带上，并被再现以允许检测再现的测试信号的幅度的平均值。如果在导出平均值的过程中发生了再现信号的丢失。如果没有检测到丢失，则检测平均值和参考值之间的差异，以调整所记录的测试信号的信号电平，使得该差大大减小到零。如果检测到辍学，则通过重复记录和再现测试信号的处理来更新平均值。

2. 发明授权

US4510840A Musical note display device 失效
标题翻译：音乐显示装置
公开(公告)号：US4510840A
公开(公告)日：1985-04-16
申请号：US567175
申请日：1983-12-30
申请人： Mamoru Inami , Yoshiaki Tanaka , Zenju Otsuki
发明人： Mamoru Inami , Yoshiaki Tanaka , Zenju Otsuki
IPC分类号： G10H1/00 , G10L25/90 , G10G1/00 , G01R23/16 , G09B15/02
CPC分类号： G10H1/0008 , G10L25/90 , G10H2210/066 , G10H2210/086 , G10H2220/015 , G10H2250/235
摘要： An input audio signal is AD converted into digital data which is processed by a central processing unit (CPU) in which Fast Fourier Transform (FFT) operation and power spectrum calculation are effected. Furthermore, spectrum data obtained in this way is processed to obtain a fundamental tone to determine the pitch of each sound of the input audio signal. After the pitch is determined, data indicative of a given pattern is produced so that a musical note is indicated at an appropriate position on a staff displayed on a screen of a display unit. Such data from the CPU is fed via a video display processor to a video RAM to be stored therein where the video display processor produces a video signal fed to the display unit in turn. Since the fundamental tone does not necessarily have the highest level within the spectrum of the input audio signal, various ways for accurate determination of the pitch are used. Furthermore, a reference pitch preset in the musical note display device may be changed so as to be equal to a reference pitch emitted from a musical instrument or the like by changing sampling frequency of sampling pulses fed to an AD converter.
摘要翻译：输入音频信号被AD转换为数字数据，该数字数据由执行快速傅里叶变换（FFT）运算和功率谱计算的中央处理单元（CPU）进行处理。此外，以这种方式获得的频谱数据被处理以获得基本色调，以确定输入音频信号的每个声音的音调。在确定音调之后，产生指示给定图案的数据，使得在显示在显示单元的屏幕上的工作人员的适当位置上指示音符。来自CPU的这些数据经由视频显示处理器被馈送到视频RAM以存储在其中，其中视频显示处理器依次产生馈送到显示单元的视频信号。由于基本音调不一定在输入音频信号的频谱内具有最高级别，所以使用用于精确确定音调的各种方式。此外，可以通过改变馈送到AD转换器的采样脉冲的采样频率来改变音乐显示装置中预设的参考音高以使其等于从乐器等发出的参考音高。

3. 发明授权

US4665494A Spectrum display device for audio signals 失效
标题翻译：频谱显示设备用于音频信号
公开(公告)号：US4665494A
公开(公告)日：1987-05-12
申请号：US562183
申请日：1983-12-16
申请人： Yoshiaki Tanaka , Mamoru Inami , Zenju Otsuki
发明人： Yoshiaki Tanaka , Mamoru Inami , Zenju Otsuki
IPC分类号： G01H3/08 , G01R13/40 , G01R23/18 , G01R23/16
CPC分类号： G01H3/08 , G01R13/405 , G01R23/18
摘要： An input audio signal is AD converted into digital signals which are processed by a central processing unit (CPU) in which Fast Fourier Transform (FFT) operation and power spectrum calculation are effected. As a result power spectrum data is obtained, and then position determination is effected to determine the position of each bar of a bar graph to be displayed on a display unit screen, according to the power level at different frequencies within the spectrum of the audio signal. Pattern data is then produced in correspondence with the determined position, and output data from the CPU is fed via a video display processor to a video RAM, thereby displaying the spectrum by way of a predetermined pattern of a bar graph on the screen. In order to reduce the number of digital data used in FFT operation the input audio signal may be divided into a plurality of different frequency bands so that different sampling frequencies are used for AD conversion of signals of respective bands. As a result, operating time is reduced. To further reduce the operating time the CPU may be arranged to execute parallel operations in various manners. Furthermore, two or more CPUs may be employed to further increase the operating speed.
摘要翻译：输入音频信号被AD转换成由执行快速傅里叶变换（FFT）操作和功率谱计算的中央处理单元（CPU）处理的数字信号。结果，获得功率谱数据，然后进行位置确定，以根据音频信号的频谱内的不同频率处的功率电平来确定要显示在显示单元屏幕上的条形图的每个条的位置。然后根据确定的位置产生图形数据，并且来自CPU的输出数据经由视频显示处理器馈送到视频RAM，从而通过屏幕上的条形图的预定图案显示频谱。为了减少在FFT操作中使用的数字数据的数量，输入音频信号可以被划分为多个不同的频带，使得不同的采样频率被用于各个频带的信号的AD转换。结果，操作时间缩短。为了进一步减少CPU可以以各种方式来执行并行操作的操作时间。此外，可以采用两个或更多个CPU来进一步提高操作速度。

4. 发明授权

US4546690A Apparatus for displaying musical notes indicative of pitch and time value 失效
标题翻译：用于显示指示音调和时间值的音符的装置
公开(公告)号：US4546690A
公开(公告)日：1985-10-15
申请号：US605672
申请日：1984-04-27
申请人： Yoshiaki Tanaka , Mamoru Inami , Zenju Otsuki
发明人： Yoshiaki Tanaka , Mamoru Inami , Zenju Otsuki
IPC分类号： G10G3/04 , G09B15/02 , G04F5/02
CPC分类号： G10G3/04
摘要： An input audio signal is analog-to-digital (AD) converted into digital data which is processed by a central processing unit (CPU) for determining pitch of each sound by effecting Fast Fourier Transform (FET) operation and power spectrum calculation. The determination of the sound pitch is effected twice in sequence, and by using frequency and level data resulted from two consecutive determinations, the time length of the sound is detected. After the pitch and the time length are determined, data indicative of a given musical note pattern is produced so that a musical note indicative of time value is indicated at an appropriate position on a staff displayed on a screen of a display unit. Such data from the CPU is fed via a video display processor to a video RAM to be stored therein where the video display processor produces a video signal fed to the display unit in turn. In one embodiment, a note indicative of only sound pitch is displayed immediately after the pitch is determined, and the pattern of the note is changed to indicate time value if the sound is detected as a continuous sound. In another embodiment, the relationship between the time value of a note and actual time length can be manually set so that desired tempo can be selected. Furthermore, rhythm sounds corresponding to a selected tempo may be emitted, while data indicative of the selected tempo may be displayed.
摘要翻译：输入音频信号被转换为数字数据，由中央处理单元（CPU）处理，用于通过进行快速傅里叶变换（FET）操作和功率谱计算来确定每个声音的音高。声音的确定依次进行两次，并且通过使用由两次连续确定得到的频率和电平数据，检测声音的时间长度。在确定音调和时间长度之后，产生指示给定音符模式的数据，使得在显示在显示单元的屏幕上的工作人员的适当位置处指示时间值的音符。来自CPU的这些数据经由视频显示处理器被馈送到视频RAM以存储在其中，其中视频显示处理器依次产生馈送到显示单元的视频信号。在一个实施例中，在确定音调之后立即显示仅指示音调的音符，并且如果声音被检测为连续声音，则音符的模式被改变以指示时间值。在另一个实施例中，可以手动设置音符的时间值与实际时间长度之间的关系，以便可以选择所需的速度。此外，可以发出对应于所选择的节奏的节奏声音，而可以显示指示所选择的节奏的数据。

5. 发明授权

US4559569A Circuit arrangement for correcting frequency response in accordance with frequency response of a sound field 失效
标题翻译：根据声场的频率响应来校正频率响应的电路布置
公开(公告)号：US4559569A
公开(公告)日：1985-12-17
申请号：US587485
申请日：1984-03-08
申请人： Zenju Otsuki , Mamoru Inami
发明人： Zenju Otsuki , Mamoru Inami
IPC分类号： H03G5/16 , H04R29/00 , H04S7/00 , G11B5/02
CPC分类号： H04S7/30 , H03G5/165 , H04R29/00 , H04R29/001
摘要： In a circuit arrangement for automatically correcting frequency response so as to set a desired frequency response in view of a frequency response of a sound field, a frequency response control circuit is improved such that precise level control at a number of bands is effected with a simple structure. A microcomputer is used to determine the difference between a desired frequency response curve and a frequency response curve obtained by measuring the sound pressure level in a sound field, to which pink noise or the like is emitted through the frequency response control circuit, so as to produce a control signal used in the frequency response control circuit to give a desired frequency response to an audio signal. The frequency response control circuit comprises an amplifier, a plurality of resonance circuits corresponding to the bands, a plurality of variable resistor circuits each including a parallel circuit of a plurality of series circuits of a resistor and an analog switch; and an interface circuit responsive to serial data of the control signal from the microcomputer for controlling the analog switches.
摘要翻译：在用于自动校正频率响应以便根据声场的频率响应来设置期望的频率响应的电路装置中，频率响应控制电路被改进，使得在多个频带上的精确电平控制以简单的结构体。使用微型计算机来确定期望的频率响应曲线和通过测量通过频率响应控制电路发出粉红噪声等的声场中的声压级获得的频率响应曲线之间的差异，以便产生在频率响应控制电路中使用的控制信号，以对音频信号给出期望的频率响应。频率响应控制电路包括放大器，对应于频带的多个谐振电路，多个可变电阻电路，每个可变电阻电路包括电阻器和模拟开关的多个串联电路的并联电路; 以及响应来自微型计算机的控制信号的串行数据的接口电路，用于控制模拟开关。

6. 发明授权

US4380732A Signal spectrum display apparatus 失效
标题翻译：信号频谱显示装置
公开(公告)号：US4380732A
公开(公告)日：1983-04-19
申请号：US180502
申请日：1980-08-22
申请人： Yoshiaki Tanaka , Mamoru Inami
发明人： Yoshiaki Tanaka , Mamoru Inami
IPC分类号： G01R13/20 , G01D7/08 , G01H3/08 , G01R13/40 , G01R23/165 , G01R23/18 , G11B27/36 , G01R23/16
CPC分类号： G01R23/18 , G01R13/408
摘要： A signal spectrum display apparatus comprises a plurality of band-pass filters respectively having filtering bands of different center frequencies and operating to filter an input signal thereby to band-divide the input signal fed through an input terminal a plurality of rectification and charging circuits connected respectively to said band-pass filters, a display section having displaying systems of the same number as the band-pass filters respectively corresponding to the band-pass filters and for displaying the outputs of the rectification and charging circuits, and a switch connected between a point between the rectification and charging circuit and the display section, and the ground.A capacitor of the rectification and charging circuit charges and discharges during said switch is closed, whereby the input signal level is displayed in real-time in the display section, and stops charging and discharging during the switch is opened, whereby the maximum input signal level is successively displayed in the display section in response to the output voltage held in response to successive higher input signal voltage.
摘要翻译：信号频谱显示装置包括分别具有不同中心频率的滤波频带的多个带通滤波器，并且操作以对输入信号进行滤波，从而对通过输入端馈送的输入信号进行带分频，分别连接多个整流和充电电路对于所述带通滤波器，显示部分具有与带通滤波器分别对应的带通滤波器相同数目的显示系统，并且用于显示整流和充电电路的输出，以及连接在点在整流和充电电路与显示部分之间，以及地面。整流和充电电路中的电容器在所述开关期间充电和放电闭合，由此在显示部分实时地显示输入信号电平，并且在开关断开期间停止充电和放电，由此最大输入信号电平响应于连续更高的输入信号电压而保持的输出电压，连续地显示在显示部分中。

7. 发明授权

US4339711A Spectrum displaying apparatus for multichannel signals 失效
标题翻译：用于多声道信号的频谱显示装置
公开(公告)号：US4339711A
公开(公告)日：1982-07-13
申请号：US167142
申请日：1980-07-09
申请人： Mamoru Inami , Yoshiaki Tanaka
发明人： Mamoru Inami , Yoshiaki Tanaka
IPC分类号： G01R23/165 , H04S7/00 , G01R23/16
CPC分类号： H04S7/40 , G01R23/165
摘要： An apparatus for displaying the spectrum of multichannel signals includes band-pass filtering circuits of a plurality of channels provided to respectively correspond to the channels of a plurality of channels. Each of the band-pass filters of respective channels comprises a group of band-pass filters having filtering bands having a respectively different center frequencies and filtering by band dividing input signals. The apparatus comprises level comparing circuits for at least rectifying respectively the outputs of band-pass filters mutually having the same filtering band of the band-pass filtering circuits of the plurality of channels, thereafter level comparing the same, and obtaining the band signal of the higher level, an indication device having indicating parts of systems of the same number as the number of the band signals thus obtained, and circuits for supplying said band signals thus obtained to the indicating device and causing the levels thereof to be displayed by the indicating parts of the respectively corresponding systems.
摘要翻译：用于显示多声道信号的频谱的装置包括分别对应于多个声道的声道的多个声道的带通滤波电路。每个通道的带通滤波器包括一组具有滤波频带的带通滤波器，滤波频带具有分别不同的中心频率，并且通过频带划分输入信号进行滤波。该装置包括用于至少对多个通道中的带通滤波电路具有相同滤波频带的滤波带相同的带通滤波器的输出进行整流的电平比较电路，之后对其进行电平比较，并获得具有与所获得的频带信号的数量相同的系统的指示部分的指示装置，以及将由此获得的所述频带信号提供给指示装置的电路，并使其指示级别显示在指示部分的相应系统。

8. 发明授权

US4612665A Graphic equalizer with spectrum analyzer and system thereof 失效
标题翻译：带有频谱分析仪及其系统的图形均衡器
公开(公告)号：US4612665A
公开(公告)日：1986-09-16
申请号：US314360
申请日：1981-10-23
申请人： Mamoru Inami , Yoshiaki Tanaka
发明人： Mamoru Inami , Yoshiaki Tanaka
IPC分类号： G01R23/165 , G01D7/02 , G01H3/08 , G01R23/16 , G10K15/00 , H03G3/02 , H03G5/02 , G01R23/18 , H04B3/04
CPC分类号： G01R23/16 , H03G5/025
摘要： A graphic equalizer comprises an equalizer for separately level adjusting the input signal for each of a number of divided frequency bands which are different from each other, control knobs provided one for each of the divided frequency bands, which are operated for carrying out level adjusting of the equalizer, a spectrum analyzer supplied with the output signal of the equalizer and having a display for displaying the level of each of the divided frequency bands, and a casing provided with a panel face having the control knobs and the display section of the spectrum analyzer disposed in a corresponding relationship to each other and accommodating the equalizer and the spectrum analyzer therein.
摘要翻译：图形均衡器包括均衡器，用于对彼此不同的多个分割频带中的每一个分别级别调整输入信号，控制旋钮为每个分频带提供一个，用于执行电平调整均衡器，频谱分析仪，其提供均衡器的输出信号，并具有用于显示每个分频频带的电平的显示器;以及壳体，其具有具有控制旋钮和频谱分析仪的显示部分的面板面以彼此对应的关系设置并且在其中容纳均衡器和频谱分析器。

9. 发明授权

US3971961A Pulse amplifier 失效
标题翻译：脉冲放大器
公开(公告)号：US3971961A
公开(公告)日：1976-07-27
申请号：US536653
申请日：1974-12-26
申请人： Mamoru Inami , Yoshiaki Tanaka , Tsuyoshi Ono
发明人： Mamoru Inami , Yoshiaki Tanaka , Tsuyoshi Ono
IPC分类号： G09G3/288 , H03K5/02 , H03K5/12 , H03K3/26 , H03K5/08 , H03K19/36
CPC分类号： H03K5/02 , G09G3/288 , G09G3/296 , H03K5/12
摘要： A pulse amplifier has a first grounded emitter transistor arranged to receive input pulses to change its on-off states in accordance with the presence and absence of the applied pulses and a pair of second and third transistors having their collectors connected in common to a power supply. The second transistor has its base connected to the collector of the first transistor and its emitter connected to the base of the third transistor. The third transistor has its emitter connected to an output terminal from which a high voltage heavy current pulse is obtained so that the pair of transistors change their on-off states alternately with the first transistor. A semiconductor circuit is connected across the emitter and base of the second transistor to instantly put the base potential of the third transistor to a level equal to the base potential of the second transistor when the second transistor changes its state from conducting to nonconducting to thereby assure short decay time at the trailing edge of the output pulse.
摘要翻译：脉冲放大器具有第一接地发射极晶体管，其布置成根据所施加脉冲的存在和不存在接收输入脉冲以改变其导通截止状态;以及一对具有共同连接到电源的集电极的第二和第三晶体管。第二晶体管的基极连接到第一晶体管的集电极，其发射极连接到第三晶体管的基极。第三晶体管的发射极连接到输出端子，从该输出端子获得高电压大电流脉冲，使得该对晶体管与第一晶体管交替地改变其导通截止状态。半导体电路跨越第二晶体管的发射极和基极连接，当第二晶体管将其状态从导通状态改变为不导通时，立即将第三晶体管的基极电位置于等于第二晶体管的基极电位的电平，从而确保在输出脉冲后沿的短衰减时间。

10. 发明授权

US4489353A Maximum output level automatic measuring apparatus 失效
标题翻译：最大输出电平自动测量仪
公开(公告)号：US4489353A
公开(公告)日：1984-12-18
申请号：US434102
申请日：1982-10-13
申请人： Mamoru Inami , Zenju Ohtsuki , Yoshiaki Tanaka
发明人： Mamoru Inami , Zenju Ohtsuki , Yoshiaki Tanaka
IPC分类号： G11B20/18 , G11B15/02 , G11B5/02
CPC分类号： G11B20/182
摘要： A maximum output level automatic measuring apparatus comprises a testing signal generating circuit for generating a plurality of testing signals having different frequencies, by independently varying respective levels of the testing signals, a recording and reproducing circuit for recording the plurality of testing signals from the testing signal generating circuit onto a magnetic recording medium, and reproducing the recorded testing signals, a level detector for detecting reproduced levels of the plurality of testing signals from the recording and reproducing circuit, and a display device for displaying a maximum output level curve according to reproduced levels detected at the level detecting circuit. The level detector detects that reproduced levels of the plurality of testing signals have reached predetermined values preset with respect to the respective testing signals. The display device comprises a display screen having a frequency axis and a level axis, and independently displays the reproduced levels which reached the predetermined values detected by the level detector for each of the frequencies.
摘要翻译：最大输出电平自动测量装置包括测试信号产生电路，用于通过独立地改变测试信号的各个电平来产生具有不同频率的多个测试信号;记录和再现电路，用于从测试信号记录多个测试信号产生电路到磁记录介质上，并再现记录的测试信号;电平检测器，用于检测来自记录和再现电路的多个测试信号的再现电平;以及显示装置，用于根据再现电平显示最大输出电平曲线在电平检测电路检测。电平检测器检测多个测试信号的再现电平已经达到相对于各个测试信号预设的预定值。显示装置包括具有频率轴和电平轴的显示屏，并且独立地显示达到由电平检测器检测的每个频率的预定值的再现电平。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式