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resources:tools-software:sigmastudio:toolbox:basicdsp:signalsubtract [22 Jun 2012 14:39] William Jahn Approved |
resources:tools-software:sigmastudio:toolbox:basicdsp:signalsubtract [09 Mar 2017 07:47] Venkatesan Krishnamoorthy |
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| [[resources:tools-software:sigmastudio:toolbox:basicdsp|Click here to return to the Basic DSP page]]\\ | [[resources:tools-software:sigmastudio:toolbox:basicdsp|Click here to return to the Basic DSP page]]\\ | ||
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| - | --------------------------------------------------------------------------------------------------------- | + | There are two kinds of subtraction supported. |
| + | - Subtraction (Real Signals) | ||
| + | - Subtraction (Complex Signals) | ||
| + | =====Subtraction (Real Signals) ===== | ||
| + | The Subtract Block performs a subtraction operation on the input pins and outputs the difference result. (Minuend - Subtrahend = Difference)|{{signalsubtractpic1.png}}| | ||
| - | |The Subtract Block performs a subtraction operation on the input pins and outputs the difference result. (Minuend - Subtrahend = Difference)|{{signalsubtractpic1.png}}| | + | ====Input Pins==== |
| - | + | ||
| - | ===Input Pins=== | + | |
| ^Name^Format [int/dec] - [control/audio]^Function Description^ | ^Name^Format [int/dec] - [control/audio]^Function Description^ | ||
| |Input_Pin 0|any - any|Minuend term| | |Input_Pin 0|any - any|Minuend term| | ||
| |Input_Pin 1|any - any|Subtrahend term| | |Input_Pin 1|any - any|Subtrahend term| | ||
| - | ===Output Pins=== | + | ====Output Pins==== |
| ^Name^Format [int/dec] - [control/audio]^Function Description^ | ^Name^Format [int/dec] - [control/audio]^Function Description^ | ||
| |Input_Pin 0|any - any|Difference term| | |Input_Pin 0|any - any|Difference term| | ||
| - | ===Algorithm Description=== | + | ====Algorithm Description==== |
| A standard subtraction operation is performed. When the algorithm is grown new input pins appear. These input pins represent more subtrahend terms so that the resulting output formula is:\\ | A standard subtraction operation is performed. When the algorithm is grown new input pins appear. These input pins represent more subtrahend terms so that the resulting output formula is:\\ | ||
| Output_Pin 0 = Input_Pin 0 - (Input_Pin1 + Input_Pin2 + Input_Pin3 + ... Input_PinN) | Output_Pin 0 = Input_Pin 0 - (Input_Pin1 + Input_Pin2 + Input_Pin3 + ... Input_PinN) | ||
| - | ===Example=== | + | ====Example==== |
| The subtraction block can be used along with other arithmetic operators to realize many typical DSP functions. It is a basic building block that allows difference operations to be performed. | The subtraction block can be used along with other arithmetic operators to realize many typical DSP functions. It is a basic building block that allows difference operations to be performed. | ||
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| - | ===Algorithm Details=== | + | ====Algorithm Details==== |
| |Toolbox Path|Basic DSP - Arithmetic Operations - Signal Subtract| | |Toolbox Path|Basic DSP - Arithmetic Operations - Signal Subtract| | ||
| |Cores Supported|ADAU144x \\ ADAU176x \\ ADAU178x \\ ADAU170x \\ AD1940| | |Cores Supported|ADAU144x \\ ADAU176x \\ ADAU178x \\ ADAU170x \\ AD1940| | ||
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| + | =====Subtraction (Complex Signals) ===== | ||
| + | This algorithm subtracts the complex signals. (All real parts are subtracted to the first signal's real part and all imaginary parts are subtracted to first signals imaginary part)This is a block based module. | ||
| + | \\ | ||
| + | {{ :resources:tools-software:sigmastudio:toolbox:basicdsp:complexsubtract.jpg?nolink |}} | ||
| + | \\ | ||
| + | ====Input Pins==== | ||
| + | ^Name^Format [int/dec] - [control/audio]^Function Description^ | ||
| + | |Pin 0: Operand 1 |complex| Input complex signal 1| | ||
| + | |Pin 1: Operand 2 |complex| Input Complex signal 2| | ||
| + | \\ | ||
| + | ====Output Pins==== | ||
| + | ^Name^Format [int/dec] - [control/audio]^Function Description^ | ||
| + | |Pin 0: Output Signal| Complex | Complex output signal| | ||
| + | \\ | ||
| + | \\ | ||
| + | ====Grow Algorithm==== | ||
| + | input pins can be grown up to 8 channels. | ||
| + | |||
| + | \\ | ||
| + | \\ | ||
| + | ====Supported DSPs===== | ||
| + | ADAU145x (Block Schematic only) | ||
| + | \\ | ||
| + | \\ | ||
| + | ====Example Usage===== | ||
| + | This can be used to subtract two signals FFT's result as shown below. | ||
| + | \\ | ||
| + | {{ :resources:tools-software:sigmastudio:toolbox:basicdsp:complexsub2.jpg?nolink |}} | ||
| + | \\ | ||
resources/tools-software/sigmastudio/toolbox/basicdsp/signalsubtract.txt · Last modified: 09 Mar 2017 07:47 by Venkatesan Krishnamoorthy