SOUNDSC(Y,...) is the same as SOUND(Y,...) except the data is scaled so that the sound is played as loud as possible without clipping. The mean of the data is removed.
上傳時間： 2015-10-28
上傳用戶：WMC_geophy
2． Using Gaussian elimination method and Gaussian elimination method with row scaled method to solve the following tri-diagonal system for n=10 and 100
標簽： method elimination Gaussian scaled
上傳時間： 2013-12-31
上傳用戶：lyy1234
Analog Inputs and Outputs in an S7 PLC are represented in the PLC as a 16-bit integer. Over the nominal span of the analog input or output, the value of this integer will range between - 27648 and +27648. However, it is easier to use the analog values if they are scaled to the same units and ranges as the process being controlled. This applications tip describes methods for scaling analog values to and from engineering units.
上傳時間： 2013-11-17
上傳用戶：3294322651
The use of the Wind River VxWorks Real-Time Operating System (RTOS) on Virtex™-4embedded PowerPC™ processors continues to be a popular choice for high performanceFPGA designs. The introduction of the Wind River Workbench design environment has enableda new and easier way for designers to control the configuration of the VxWorks kernel. Thisguide shows the steps required to build and configure a ML403 Embedded DevelopmentPlatform to boot and run the VxWorks RTOS. A VxWorks bootloader is created, programmedinto Flash, and used to boot the design. The concepts presented here can be scaled to anyPowerPC enabled development platform.
上傳時間： 2013-10-26
上傳用戶：agent
用途：測量地磁方向，測量物體靜止時候的方向，測量傳感器周圍磁力線的方向。注意，測量地磁時候容易受到周圍磁場影響，主芯片HMC5883 三軸磁阻傳感器特點（抄自網上）： 1，數字量輸出：I2C 數字量輸出接口，設計使用非常方便。 2，尺寸小: 3x3x0.9mm LCC 封裝，適合大規模量產使用。 3，精度高：1－2 度，內置12 位A/D,OFFSET, SET/RESET 電路，不會出現磁飽和現象，不會有累加誤差。 4，支持自動校準程序，簡化使用步驟，終端產品使用非常方便。 5，內置自測試電路，方便量產測試，無需增加額外昂貴的測試設備。 6，功耗低：供電電壓1.8V, 功耗睡眠模式-2.5uA 測量模式-0.6mA 連接方法： 只要連接VCC，GND，SDA，SDL 四條線。 Arduino GND -> HMC5883L GND Arduino 3.3V -> HMC5883L VCC Arduino A4 (SDA) -> HMC5883L SDA Arduino A5 (SCL) -> HMC5883L SCL (注意，接線是A4，A5，不是D4,D5) 源程序： #include <Wire.h> #include <HMC5883L.h> HMC5883Lcompass; voidsetup() { Serial.begin(9600); Wire.begin(); compass = HMC5883L(); compass.SetScale(1.3); compass.SetMeasurementMode(Measurement_Continuous); } voidloop() { MagnetometerRaw raw = compass.ReadRawAxis(); Magnetometerscaled scaled = compass.ReadscaledAxis(); float xHeading = atan2(scaled.YAxis, scaled.XAxis); float yHeading = atan2(scaled.ZAxis, scaled.XAxis); float zHeading = atan2(scaled.ZAxis, scaled.YAxis); if(xHeading < 0) xHeading += 2*PI; if(xHeading > 2*PI) xHeading -= 2*PI; if(yHeading < 0) yHeading += 2*PI; if(yHeading > 2*PI) yHeading -= 2*PI; if(zHeading < 0) zHeading += 2*PI; if(zHeading > 2*PI) zHeading -= 2*PI; float xDegrees = xHeading * 180/M_PI; float yDegrees = yHeading * 180/M_PI; float zDegrees = zHeading * 180/M_PI; Serial.print(xDegrees); Serial.print(","); Serial.print(yDegrees); Serial.print(","); Serial.print(zDegrees); Serial.println(";"); delay(100); }
上傳時間： 2013-12-16
上傳用戶：stella2015
The data plane of the reference design consists of a configurable multi-channel XBERT modulethat generates and checks high-speed serial data transmitted and received by the MGTs. Eachchannel in the XBERT module consists of two MGTs (MGTA and MGTB), which physicallyoccupy one MGT tile in the Virtex-4 FPGA. Each MGT has its own pattern checker, but bothMGTs in a channel share the same pattern generator. Each channel can load a differentpattern. The MGT serial rate depends on the reference clock frequency and the internal PMAdivider settings. The reference design can be scaled anywhere from one channel (two MGTs)to twelve channels (twenty-four MGTs).
上傳時間： 2013-12-25
上傳用戶：jkhjkh1982
用途：測量地磁方向，測量物體靜止時候的方向，測量傳感器周圍磁力線的方向。注意，測量地磁時候容易受到周圍磁場影響，主芯片HMC5883 三軸磁阻傳感器特點（抄自網上）： 1，數字量輸出：I2C 數字量輸出接口，設計使用非常方便。 2，尺寸小: 3x3x0.9mm LCC 封裝，適合大規模量產使用。 3，精度高：1－2 度，內置12 位A/D,OFFSET, SET/RESET 電路，不會出現磁飽和現象，不會有累加誤差。 4，支持自動校準程序，簡化使用步驟，終端產品使用非常方便。 5，內置自測試電路，方便量產測試，無需增加額外昂貴的測試設備。 6，功耗低：供電電壓1.8V, 功耗睡眠模式-2.5uA 測量模式-0.6mA 連接方法： 只要連接VCC，GND，SDA，SDL 四條線。 Arduino GND -> HMC5883L GND Arduino 3.3V -> HMC5883L VCC Arduino A4 (SDA) -> HMC5883L SDA Arduino A5 (SCL) -> HMC5883L SCL (注意，接線是A4，A5，不是D4,D5) 源程序： #include <Wire.h> #include <HMC5883L.h> HMC5883Lcompass; voidsetup() { Serial.begin(9600); Wire.begin(); compass = HMC5883L(); compass.SetScale(1.3); compass.SetMeasurementMode(Measurement_Continuous); } voidloop() { MagnetometerRaw raw = compass.ReadRawAxis(); Magnetometerscaled scaled = compass.ReadscaledAxis(); float xHeading = atan2(scaled.YAxis, scaled.XAxis); float yHeading = atan2(scaled.ZAxis, scaled.XAxis); float zHeading = atan2(scaled.ZAxis, scaled.YAxis); if(xHeading < 0) xHeading += 2*PI; if(xHeading > 2*PI) xHeading -= 2*PI; if(yHeading < 0) yHeading += 2*PI; if(yHeading > 2*PI) yHeading -= 2*PI; if(zHeading < 0) zHeading += 2*PI; if(zHeading > 2*PI) zHeading -= 2*PI; float xDegrees = xHeading * 180/M_PI; float yDegrees = yHeading * 180/M_PI; float zDegrees = zHeading * 180/M_PI; Serial.print(xDegrees); Serial.print(","); Serial.print(yDegrees); Serial.print(","); Serial.print(zDegrees); Serial.println(";"); delay(100); }
上傳時間： 2014-03-20
上傳用戶：tianyi223
Displaying large amounts of technical data in a chart can be a frustrating task. You can find tons of charting controls with fancy effects and useless features, but when it comes to displaying many curves at once, independently scaled on different axes, most of them fail.
標簽： frustrating Displaying can technical
上傳時間： 2014-01-05
上傳用戶：exxxds
When working with mathematical simulations or engineering problems, it is not unusual to handle curves that contains thousands of points. Usually, displaying all the points is not useful, a number of them will be rendered on the same pixel since the screen precision is finite. Hence, you use a lot of resource for nothing! This article presents a fast 2D-line approximation algorithm based on the Douglas-Peucker algorithm (see [1]), well-known in the cartography community. It computes a hull, scaled by a tolerance factor, around the curve by choosing a minimum of key points. This algorithm has several advantages: 這是一個基于Douglas-Peucker算法的二維估值算法。
標簽： mathematical engineering simulations problems
上傳時間： 2013-12-20
上傳用戶：changeboy
// // Histogram Sample // This sample shows how to use the Sample Grabber filter for video image processing. // Conceptual background: // A histogram is just a frequency count of every pixel value in the image. // There are various well-known mathematical operations that you can perform on an image // using histograms, to enhance the image, etc. // Histogram stretch (aka automatic gain control): // Stretches the image histogram to fill the entire range of values. This is a "point operation," // meaning each pixel is scaled to a new value, without examining the neighboring pixels. The // histogram stretch does not actually require you to calculate the full histogram. The scaling factor // is calculated from the minimum and maximum values in the image.
標簽： Sample Histogram Grabber sample
上傳時間： 2013-12-15
上傳用戶：ryb
