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首頁 DSP應用 音效處理 > QEDesign比較表
QEDesign濾波器設計

QEDesign Lite

QEDesign 1000

QEDesign 2000

        
QEDesign 是一個非常好用的濾波器設計軟體,QEDesign的產品系列可分為QEDesign LiteQEDesign1000QEDesign2000這三種產品都可以解決在設計FIRIIR濾波器上所遇到的問題。

以下表格是說明不同版本的QEDesign所包含的特殊函數:

Supported Platforms

Platform

QEDesign family member

QEDesign Lite
student version

QEDesign 1000
professional

QEDesign 2000
Premier

Win95/NT

Yes

Yes

Yes

UNIX

No

No

Yes

Supported Filter Types

Type of Filter

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Lowpass

Yes

Yes

Yes

Highpass

Yes

Yes

Yes

Bandpass

Yes

Yes

Yes

Bandstop

Yes

Yes

Yes

Differentiator

No

Yes

Yes

Multiband

No

Yes

Yes

Hilbert Transformer

No

Yes

Yes

Arbitrary Magnitude (FIR)

No

Yes

Yes

Halfband

No

Yes

Yes

Raised Cosine

No

Yes

Yes

Root Raised Cosine

No

Yes

Yes

Arbitrary Group Delay

No

Yes

Yes

Maximum Filter Order

Type of Filter

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

IIR

12th order

80th order

200th order

FIR with windows

128

2048

100,000

Equiripple FIR

64

1024

50,000

Equiripple limit is the same as FIR for all

IIR Analog Prototypes

Type of Filter

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Butterworth

Yes

Yes

Yes

Tschebyscheff

Yes

Yes

Yes

Inverse Tschebyscheff

Yes

Yes

Yes

Elliptic

Yes

Yes

Yes

Bessel

Yes

Yes

Yes

Digital Transformation Methods

Method

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Bilinear

Yes

Yes

Yes

Impulse Invariant

No

Yes

Yes

Matched Z-Transform

No

No

Yes

IIR Realization Methods for bilinear and matched z-transform designs

Method

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Cascade

Yes

Yes

Yes

Parallel

No

No

Yes

Ratio of polynomials

No

No

Yes

FIR Window Functions

Window Function

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Rectangular

Yes

Yes

Yes

Triangular

Yes

Yes

Yes

Hanning

Yes

Yes

Yes

Hamming

Yes

Yes

Yes

Blackman

Yes

Yes

Yes

Kaiser

Yes

Yes

Yes

Exact Blackman

No

Yes

Yes

3 Term Cosine

No

Yes

Yes

3 Term Cosine with continuous 3rd Derivative

No

Yes

Yes

Minimum 3 Term Cosine

No

Yes

Yes

4 Term Cosine

No

Yes

Yes

4 Term Cosine with continuous 5th Derivative

No

Yes

Yes

Minimum 4 Term Cosine

No

Yes

Yes

Good 4 Term Blackman Harris

No

Yes

Yes

Harris Flat Top

No

Yes

Yes

Dolph-Tschebyscheff

No

Yes

Yes

Taylor

No

Yes

Yes

Gaussian

No

Yes

Yes

System Analysis

Domain Type

QEDesign family member

QEDesign Lite

QEDesign 1000

QEesign 2000

Z-Domain transfer function

No

Yes

Yes

S-Domain transfer function

No

Yes

Yes

Compensation Features

Features

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

D to A conversion

No

Yes

Yes

Comb Filter Compensation

No

Yes

Yes

Phase Equalization

No

Yes

Yes

Plot Options

Plot Type

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Magnitude

Yes

Yes

Yes

Log Magnitude

Yes

Yes

Yes

Poles and Zeros

Yes

Yes

Yes

Phase

Yes

Yes

Yes

Group Delay

Yes

Yes

Yes

Impulse Response

Yes

Yes

Yes

Step Response

No

Yes

Yes

Logarithmic Frequency Scale

No

Yes

Yes

Miscellaneous

Features

QEDesign family member

QEDesign Lite

QEDesign 1000

QEDesign 2000

Graphical Placement of Poles and Zeros with simultaneous display of system response

No

No

Yes

Quad Precision Calculations for critical designs

No

No

Yes