📄 dspsdadc4.mdl
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BackgroundColor "black"
DialogController "dspDDGCreate"
DialogControllerArgs "DataTag2"
SourceBlock "dspmlti4/FIR\nDecimation"
SourceType "FIR Decimation"
h "fir1(64, 0.125)"
D "4"
framing "Maintain input frame size"
outputBufInitCond "0"
additionalParams off
allowOverrides on
firstCoeffMode "Same word length as input"
firstCoeffWordLength "16"
firstCoeffFracLength "15"
outputMode "Same as accumulator"
outputWordLength "16"
outputFracLength "15"
accumMode "Inherit via internal rule"
accumWordLength "32"
accumFracLength "30"
prodOutputMode "Inherit via internal rule"
prodOutputWordLength "32"
prodOutputFracLength "30"
roundingMode "Floor"
overflowMode off
LockScale off
}
Block {
BlockType Outport
Name "Out1"
Position [390, 33, 420, 47]
IconDisplay "Port number"
BusOutputAsStruct off
}
Line {
SrcBlock "FIR\nDecimation\nto 32 khz"
SrcPort 1
DstBlock "FIR\nDecimation\nto 8kHz"
DstPort 1
}
Line {
SrcBlock "FIR\nDecimation\nto128kHz"
SrcPort 1
DstBlock "FIR\nDecimation\nto 32 khz"
DstPort 1
}
Line {
SrcBlock "In1"
SrcPort 1
DstBlock "FIR\nDecimation\nto128kHz"
DstPort 1
}
Line {
SrcBlock "FIR\nDecimation\nto 8kHz"
SrcPort 1
DstBlock "Out1"
DstPort 1
}
}
}
Block {
BlockType Gain
Name "Gain"
Position [340, 115, 370, 145]
Gain "0.5"
}
Block {
BlockType Gain
Name "Gain1"
Position [235, 170, 265, 200]
Orientation "left"
Gain ".5"
}
Block {
BlockType Gain
Name "Gain2"
Position [85, 115, 115, 145]
Gain "0.5"
}
Block {
BlockType Scope
Name "Results"
Ports [1]
Position [705, 43, 735, 87]
ShowName off
Location [652, 477, 1019, 732]
Open on
NumInputPorts "1"
ZoomMode "xonly"
List {
ListType AxesTitles
axes1 "%<SignalLabel>"
}
TimeRange "0.015"
YMin "-1"
YMax "1"
DataFormat "Array"
LimitDataPoints off
}
Block {
BlockType ZeroOrderHold
Name "Sample\nat 512kHz1"
Position [130, 114, 160, 146]
SampleTime "1/512000"
}
Block {
BlockType ZeroOrderHold
Name "Sample\nat 8KHz"
Position [230, 39, 265, 71]
SampleTime "1/8000"
}
Block {
BlockType Sin
Name "Sine Wave"
Ports [0, 1]
Position [15, 109, 60, 151]
SineType "Time based"
Amplitude ".5"
Frequency "500*2*pi"
SampleTime "0"
Port {
PortNumber 1
Name "Analog\nInput"
RTWStorageClass "Auto"
DataLoggingNameMode "SignalName"
ShowSigGenPortName on
}
}
Block {
BlockType Reference
Name "Spectrum\nScope"
Ports [1]
Position [680, 105, 715, 155]
SourceBlock "dspsnks4/Spectrum\nScope"
SourceType "Spectrum Scope"
ShowPortLabels off
ScopeProperties off
Domain "Frequency"
HorizSpan "1"
UseBuffer on
BufferSize "512"
Overlap "0"
inpFftLenInherit off
FFTlength "128"
numAvg "1"
DisplayProperties off
AxisGrid on
Memory off
FrameNumber on
AxisLegend off
AxisZoom off
OpenScopeAtSimStart on
OpenScopeImmediately off
FigPos "[4 36 640 268]"
AxisProperties on
XUnits "Hertz"
XRange "[0...Fs/2]"
InheritXIncr on
XIncr "1.0"
XLabel "Samples"
YUnits "dB"
YMin "-80"
YMax "20"
YLabel "Magnitude, dB"
LineProperties off
wintypeSpecScope "Hann"
RsSpecScope "50"
betaSpecScope "5"
winsampSpecScope "Periodic"
}
Block {
BlockType Sum
Name "Sum"
Ports [2, 1]
Position [180, 115, 210, 145]
ShowName off
IconShape "round"
Inputs "|+-"
}
Block {
BlockType Sum
Name "Sum1"
Ports [2, 1]
Position [290, 115, 320, 145]
ShowName off
IconShape "round"
Inputs "|+-"
}
Block {
BlockType Reference
Name "delay 10 samples"
Ports [1, 1]
Position [325, 37, 370, 73]
SourceBlock "dspobslib/Integer Delay"
SourceType "Integer Delay"
delay "10"
ic "0"
reset_popup "None"
Port {
PortNumber 1
Name "yellow=adc input"
RTWStorageClass "Auto"
DataLoggingNameMode "SignalName"
ShowSigGenPortName on
}
}
Block {
BlockType DiscreteFilter
Name "integrator"
Position [395, 110, 435, 150]
Numerator "[ 0 1]"
Denominator "[1 -1]"
SampleTime "-1"
}
Block {
BlockType DiscreteFilter
Name "integrator1"
Position [225, 110, 265, 150]
Numerator "[ 0 1]"
Denominator "[1 -1]"
SampleTime "-1"
}
Line {
SrcBlock "Filter and Downsample"
SrcPort 1
Points [0, 0; 15, 0]
Branch {
Labels [-1, 0]
Points [0, -55]
DstBlock "Bus\nCreator"
DstPort 2
}
Branch {
DstBlock "Spectrum\nScope"
DstPort 1
}
}
Line {
Name "Analog\nInput"
Labels [1, 0]
SrcBlock "Sine Wave"
SrcPort 1
Points [5, 0]
Branch {
DstBlock "Gain2"
DstPort 1
}
Branch {
Points [0, -75]
DstBlock "Sample\nat 8KHz"
DstPort 1
}
}
Line {
Name "1-bit Error Signal"
Labels [0, 0]
SrcBlock "1-bit\nquantizer"
SrcPort 1
Points [0, 0; 25, 0]
Branch {
DstBlock "Filter and Downsample"
DstPort 1
}
Branch {
Points [0, 55; -220, 0]
Branch {
DstBlock "Sum1"
DstPort 2
}
Branch {
DstBlock "Gain1"
DstPort 1
}
}
}
Line {
SrcBlock "Sum"
SrcPort 1
DstBlock "integrator1"
DstPort 1
}
Line {
SrcBlock "Bus\nCreator"
SrcPort 1
DstBlock "Results"
DstPort 1
}
Line {
Labels [0, 0]
SrcBlock "Sample\nat 8KHz"
SrcPort 1
DstBlock "delay 10 samples"
DstPort 1
}
Line {
Name "yellow=adc input"
Labels [0, 0]
SrcBlock "delay 10 samples"
SrcPort 1
DstBlock "Bus\nCreator"
DstPort 1
}
Line {
SrcBlock "integrator1"
SrcPort 1
Points [5, 0]
DstBlock "Sum1"
DstPort 1
}
Line {
SrcBlock "Sum1"
SrcPort 1
DstBlock "Gain"
DstPort 1
}
Line {
SrcBlock "Gain"
SrcPort 1
Points [0, 0]
DstBlock "integrator"
DstPort 1
}
Line {
SrcBlock "Gain1"
SrcPort 1
Points [-35, 0]
DstBlock "Sum"
DstPort 2
}
Line {
SrcBlock "Sample\nat 512kHz1"
SrcPort 1
DstBlock "Sum"
DstPort 1
}
Line {
SrcBlock "integrator"
SrcPort 1
DstBlock "1-bit\nquantizer"
DstPort 1
}
Line {
SrcBlock "Gain2"
SrcPort 1
Points [0, 0]
DstBlock "Sample\nat 512kHz1"
DstPort 1
}
}
}
MatData {
NumRecords 3
DataRecord {
Tag DataTag2
Data " %)30 . < 8 ( 0 % "
"\" $ ! 0 . 0 8 ( ! % \" $ "
", 0 0 # $9)4D1E8TEN=&5R< "
}
DataRecord {
Tag DataTag1
Data " %)30 . < 8 ( 0 % "
"\" $ ! 0 . 0 8 ( ! % \" $ "
", 0 0 # $9)4D1E8TEN=&5R< "
}
DataRecord {
Tag DataTag0
Data " %)30 . < 8 ( 0 % "
"\" $ ! 0 . 0 8 ( ! % \" $ "
", 0 0 # $9)4D1E8TEN=&5R< "
}
}
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