Digital Filter Design
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製品名 注文番号
Digital Filter Design FD
Digital Filter Design Lite　販売終了 FD-LT
フィルタデザインはフィルタの計数を算出するためのツールです。
FIR・IIRフィルタをプログラムする場合、各タップには係数が必要です。その係数を計算で求めることは不可能に近いことです。
画面の各特性を確認しながらフィルタの係数を決定することができます。
デジタルフィルタ設計時の必需品といえます。

The Digital Filter Design tool for the dsPICR16-bit DigitalSignal Controllers makes designing, analyzing andimplementing Finite Impulse Response (FIR) and InfiniteImpulse Response (IIR) digital filters easy through a menudrivenand user intuitive interface. The filter design toolperforms complex mathematical computations for filterdesign, provides superior graphical displays and generatescomprehensive design reports. Desired filter frequencyspecifications are entered and the tool automaticallygenerates the filter code and coefficient files ready to usein the MPLABR Integrated Development Environment (IDE).System analysis of the filter transfer function is supportedwith multiple generated graphs such as: magnitude, phase,group delay, log magnitude, impulse response and pole/zerolocations.

安価なライト版もあります
デジタルフィルタ設計時の必需品
 
本説明はFDの正規版の説明になります。ライト版はタップ数に制限がありますのでご注意下さい。
特長 ポイント 製品構成 仕様 その他
特長
Key features of the Digital Filter Design tool include:
Finite Impulse Response Filter Design
・ Design Method Selection
　− FIR Windows Design
　− FIR Equiripple Design (Parks-McClellan)
・ Lowpass, Highpass, Bandpass and Bandstop filters
・ FIR filters can have up to 513 taps
・ Following window functions are supported:
　− Rectangular
　− Hanning (Hann)
　− Hamming
　− Triangular
　− Blackman
　− Exact Blackman
　− 3 Term Cosine
　− 3 Term Cosine with continuous 3rd Derivative
　− Minimum 3 Term Cosine
　− 4 Term Cosine
　− 4 Term Cosine with continuous 5th Derivative
　− Minimum 4 Term Cosine
　− Good 4 Term Blackman Harris
　− Harris Flat Top
　− Kaiser
　− Dolph-Tschebyscheff
　− Taylor
　− Gaussian
　− Reports show design details such as window
coefficients and Impulse Response prior to multiplying by the window function
ポイント
Infinite Impulse Response Filter Design
Lowpass, Highpass, Bandpass and Bandstop Filters
・ Filter orders up to 10 for Lowpass and Highpass Filters
・ Filter orders up to 20 for Bandpass and Bandstop Filters
・ Five Analog Prototype Filters are available:
　− Butterworth
　− Tschebyscheff
　− Inverse Tschebyscheff
　− Elliptic
　− Bessel
・ Digital Transformations are performed by Bilinear Transformation Method
・ Reports show design details such as all transformations from normalized lowpass filter to desired filter
Code Generation Features
Generated files are compliant with the Microchip dsPIC30F C30 Compiler, Assembler and Linker
・ Choice of placement of coefficients in Program Space or Data Space
・ C wrapper/header code generation
Graphs
Magnitude Response vs. Frequency
・ Log Magnitude vs. Frequency
・ Phase Response vs. Frequency
・ Group Delay vs. Frequency
・ Impulse Response vs. Time (per sample)
・ Step Response vs. Time (per sample)
・ Pole and Zero Locations (IIR only)
Host System Requirements
PC-compatible system with an Intel PentiumRclass or higher processor, or equivalent
・ A minimum of 16 MB RAM
・ A minimum of 40 MB available hard drive space
・ CD ROM drive
・ Microsoft WindowsR98, Windows 2000, Windows XP or Windows NT
製品構成
●Digital Filter Design の英文カタログはこちらからご覧いただけます。
　
その他
●本説明はライト版の説明ではなく、FDの正規版の説明になります。ライト版はタップ数に制限がありますのでご注意下さい。
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