MATLAB DATABASE TOOLBOX RELEASE NOTES Guide de l'utilisateur télécharger pdf (Page 177)

New Features

13-7

The data signal input and output ports (noncontrol input and output ports) of

the following blocks now support the single-precision (32-bit) floating-point

data type:

Blocks with Tunability Enhancements

The following blocks have enhanced tunability:

•Chirp —

Target time parameter is now tunable.

•Counter —

Maximum count parameter is now tunable.

•Mean —

Reset port parameter is now tunable.

•Pad —

Value parameter is now tunable.

Enhancements to Blocks Implemented with

S-Functions

Many of the DSP Blockset blocks are S-function blocks (implemented with

Simulink S-functions). The following sections summarize some of the major

DSP Blockset 4.1 enhancements that improve S-function block performance

and help you to write better S-functions.

Use of Simulink Run-Time Parameters

Many S-function blocks now generate better optimized Real-Time Workshop

C code by using Simulink run-time parameters (RTPs) for both mask dialog

and internal parameters. Blocks that use RTPs include those with filter

coefficient parameters and initial condition parameters.

•dB Gain

•Discrete Impulse

•FFT (in table lookup mode)

•IFFT (in table lookup mode)

•Matrix Multiply

•Matrix Sum

• Maximum

• Polynomial Stability Test

• Quantizer

• Uniform Decoder

• Uniform Encoder

• Window Function

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MATLAB DATABASE TOOLBOX RELEASE NOTES Guide de l'utilisateur Page 177