Version 6.3 (R2006a) Signal Processing Blockset™ Software Release Notes

Version 6.3 (R2006a) Signal Processing Blockset™ Software

This table summarizes what's new in Version 6.3 (R2006a):

New features and changes introduced in this version are

• Integration of Filter Blocks with Signal Processing Toolbox™ Filter Objects and FVTool

• Transposed Direct Form Structure Added to FIR Decimation Block

• Data Type Specification Modes Added to CIC Decimation and CIC Interpolation Blocks

• Taylor Window Type Added to Window Function Block

• Reduced Simulation Memory Footprint for Fixed-Point Capable Blocks

• Improved Usability for the To Wave Device Block

• New Demos

Integration of Filter Blocks with Signal Processing Toolbox™ Filter Objects and FVTool

Significant enhancements were made to the following filter blocks for this release:

• CIC Decimation

• CIC Interpolation

• FIR Decimation

• FIR Interpolation

• FIR Rate Conversion

The changes made to these blocks bring them into closer alignment with the Signal Processing Toolbox™ product:

• These filter blocks can now operate in two different modes, which you select in the Coefficient source group box. If you select Dialog parameters, you enter information about the filter in the block mask. If you select Multirate filter object (MFILT), you can now specify the filter using a mfilt object from the Signal Processing Toolbox product.

• You can now open the Signal Processing Toolbox fvtool from the block masks to view the filter response.

A few minor changes have also been made to the Digital Filter block mask to bring it into closer alignment with these blocks and with the Signal Processing Toolbox product. However, most of the updates to this block for this improvement were made in the previous release. See Digital Filter Block Enhancements.

Transposed Direct Form Structure Added to FIR Decimation Block

You can now implement either a transposed direct form or a direct form structure with the FIR Decimation block using the Filter structure parameter.

The addition of the transposed direct form structure to this block brings it into closer alignment to the Signal Processing Toolbox mfilt.firdecim object.

Data Type Specification Modes Added to CIC Decimation and CIC Interpolation Blocks

The Data type specification mode parameter has been added to the CIC Decimation and CIC Interpolation blocks. This parameter allows you to choose how the word and fraction lengths are specified for the filter sections and outputs. You can choose to fully specify the word and fraction lengths of the filter sections and outputs yourself, or have one or more of these quantities automatically selected for you.

This feature brings these blocks into closer alignment with the Signal Processing Toolbox mfilt.cicdecim and mfilt.cicinterp objects.

Taylor Window Type Added to Window Function Block

The Taylor window type has been added to the Window Function block. The block functionality in this mode is identical to that of the Signal Processing Toolbox taylorwin function.

Reduced Simulation Memory Footprint for Fixed-Point Capable Blocks

Fixed-point capable Signal Processing Blockset™ blocks now use less memory as they simulate. There is no change to the memory requirements for the generated code from these blocks.

Improved Usability for the To Wave Device Block

The usability of the To Wave Device block has been improved with the addition of the Automatically determine internal buffer size and User-defined internal buffer size parameters. These parameters allow you to define the size of the chunks of data that are written to the hardware audio device by the block, independently of the input dimensions. The block reference page in the documentation also has significant updates, including a "Troubleshooting" section. Refer to the reference page for more information.

New Demos

Version 6.4 (R2006b) Signal Processing Blockset™ Software

Version 6.2 (R14SP3) Signal Processing Blockset™ Software