User`s guide

DSP Blockset Demos Overview
4-25
•LPC analysis and synthesis: Uses the Levinson solver and Time-Varying
Lattice Filter for low-bandwidth transmission of speech.
•Waveform coding: This set of demos uses a variety of modulation methods to
code a waveform using one bit per message sample:
- ADPCM (Adaptive Differential Pulse Code Modulation)
- CVSD (Continuously Variable Slope Delta-modulation)
- LDM (Linear Delta Modulation)
- Comparison of LDM, CVSD, and ADPCM
Communications Demos
•SSB modulation: Demonstrates single sideband (SSB) modulation in
sample-based and frame-based modes.
•WWV digital receiver: WWV is the call sign of a US Government radio
station that transmits frequency reference standards and time code
information with a timing accuracy of 10 microseconds and a frequency
accuracy of 1 part in 100 billion. This demo simulates the transmission of a
WWV signal and demonstrates implementation of the subsequent receiver
and decoder blocks. The receiver design serves as a simple example of the use
of Simulink, DSP Blockset, Stateflow® and Real-Time Workshop.
Filtering Demos
•Multirate filtering suite: Uses FIR decimation blocks in multiple stages to
filter with very short bandwidths and low computational loads.
•FIR interpolation: Uses the FIR Interpolation block to demonstrate
interpolation of a delayed sine wave signal.
•Overlap add/save: Demonstrates filtering of a sinusoid using the
Overlap-Add and Overlap-Save FFT blocks.
•Sample rate conversion: Illustrates the efficiency of the FIR rate conversion
block by comparing the block with the equivalent process of separate
upsampling, FIR filtering, and downsampling.