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resources:tools-software:sigmastudio:toolbox:basicdsp:log2 [21 Jul 2016 07:30] – [Log2] Venkatesan Krishnamoorthyresources:tools-software:sigmastudio:toolbox:basicdsp:log2 [21 Aug 2018 11:53] (current) – Deepak Raghotham
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 [[:resources:tools-software:sigmastudio:toolbox:basicdsp|Click here to return to the Basic DSP section.]]\\ [[:resources:tools-software:sigmastudio:toolbox:basicdsp|Click here to return to the Basic DSP section.]]\\
 \\ \\
 +This module computes the log to base 2 of the incoming data.
  
-There are 2 versions of Log2 module. +There are 2 versions of Log2 module on ADAU144x processors.
   - Log2 (Linear Interpolation)   - Log2 (Linear Interpolation)
   - Log2 Accurate (Binary Algorithm)   - Log2 Accurate (Binary Algorithm)
 +
 +ADAU145x, ADSP-214xx and ADSP-SC5xx/215xx processors support a single version of the Log2 implementation.
 {{ :resources:tools-software:sigmastudio:toolbox:basicdsp:log2.jpg?nolink |}} {{ :resources:tools-software:sigmastudio:toolbox:basicdsp:log2.jpg?nolink |}}
 ===== Log2 (Linear Interpolation) =====  ===== Log2 (Linear Interpolation) ===== 
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 {{ :resources:tools-software:sigmastudio:toolbox:basicdsp:log10_2.jpg?nolink |}} {{ :resources:tools-software:sigmastudio:toolbox:basicdsp:log10_2.jpg?nolink |}}
 +
 +===== Log2 on ADSP-213xx, ADSP-214xx, ADSP-215xx and ADSP-SC5xx processors  =====
 +====Input Pins====
 +^Name^Format [int/dec] - [control/audio]^Function Description^
 +|Pin 0: Input  Data|decimal(ADAU145x) - audio \\ float(ADSP-214xx/ADSP-215xx) - audio|Input data to be converted to Log base 2|
 +====Output Pins====
 +^Name^Format [int/dec] - [control/audio]^Function Description^
 +|Pin 0: Log value|decimal(ADAU145x) - control \\ float(ADSP-214xx/ADSP-215xx) - control |log2(input)|
 +==== Grow Algorithm ====
 +The module supports Add functionality. Growth is not supported. 
 +==== GUI Controls====
 +None
 +==== DSP Parameter Information ====
 +None
 +==== Algorithm Description ====
 +log2(x) is implemented as (ln(x) / ln(2)) using the change of base formula.
 +ln(x) is implemented using the taylor series expansion.
 +==== Supported IC's ====
 +1. ADSP-213xx \\
 +2. ADSP-214xx \\
 +3. ADSP-SC5xx \\
 +4. ADSP-215xx
resources/tools-software/sigmastudio/toolbox/basicdsp/log2.txt · Last modified: 21 Aug 2018 11:53 by Deepak Raghotham

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