Merge branch 'master' of https://github.com/GuitarsAI/AudioCodingTutorials

Author: GuitarsAI

README.md

@@ -1,4 +1,4 @@
-# Audio Coding
+# Audio Coding Video Tutorials and Python Notebooks
 <p align="center">
     <img src="./images/ac_header.png">
 </p>
@@ -8,7 +8,7 @@
 [Technische Universität Ilmenau](https://www.tu-ilmenau.de/)
 
 # Content
-- 01 Basics of Multirate Signal Processing:<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_01_Basics_Multirate.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_01_Basics_Multirate.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_01_Basics_Multirate.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/Tp96ICZ_pMg)
+## 01 Basics of Multirate Signal Processing:<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_01_Basics_Multirate.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_01_Basics_Multirate.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_01_Basics_Multirate.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/Tp96ICZ_pMg)
 
   - Sampling
     - Sampling a Discrete Time Signal
@@ -21,7 +21,7 @@
   - Mid-rise and Mid-tread quantization
     - Real-Time Python Example: Quantization
 
-- 02 Filter Banks I :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_02_FilterBanks1.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_02_FilterBanks1.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_02_FilterBanks1.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/Zk8Oum6LtUc)
+## 02 Filter Banks I :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_02_FilterBanks1.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_02_FilterBanks1.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_02_FilterBanks1.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/Zk8Oum6LtUc)
 
   - Filter Banks
   - Downsampling
@@ -34,7 +34,7 @@
   - Transforms as Filter Banks
   - Real-Time Python Examples
 
-- 03 Filter Banks II :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03_FilterBanks2.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_03_FilterBanks2.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03_FilterBanks2.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/f1ykTtvWkwM)
+## 03 Filter Banks II :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03_FilterBanks2.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_03_FilterBanks2.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03_FilterBanks2.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/f1ykTtvWkwM)
 
   - Modulated Filter Banks - Extending the DCT
   - Modulated Filter Banks
@@ -57,7 +57,7 @@
     - Design Method
     - Real-Time Example
 
-- 03b Filter Banks III :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03b_FilterBanks3.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_03b_FilterBanks3.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03b_FilterBanks3.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/eLHqX6qZcX4)
+## 03b Filter Banks III :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03b_FilterBanks3.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_03b_FilterBanks3.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_03b_FilterBanks3.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/eLHqX6qZcX4)
 
   - Block Switching
   - Wavelets, QMF (Quadradutre Mirror Filter) Filter Banks
@@ -66,7 +66,7 @@
   - Pseudo-QMF (PQMF)
     - PQMF used in MPEG4
 
-- 04 Psychoacoustics :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_04_psychoAcoustics.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_04_psychoAcoustics.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_04_psychoAcoustics.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/Dp9NhFShaPM)
+## 04 Psychoacoustics :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_04_psychoAcoustics.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_04_psychoAcoustics.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_04_psychoAcoustics.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/Dp9NhFShaPM)
 
   - Block Diagram of a Perceptual Audio Encoder
   - Structure of the Human Ear
@@ -96,7 +96,7 @@
         - Masking Neighboring Bands
         - Temporal Masking Effects
 
-- 05 Psychoacoustics Models :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_05_psychoAcousticsModels.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_05_psychoAcousticsModels.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_05_psychoAcousticsModels.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/CulE7VNtf5Q)
+## 05 Psychoacoustics Models :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_05_psychoAcousticsModels.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_05_psychoAcousticsModels.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_05_psychoAcousticsModels.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/CulE7VNtf5Q)
 
     - Spreading Function: Python Example
     - Masking Neighboring Bands Non-Linear Superposition
@@ -111,6 +111,38 @@
     - The Complete Psycho-Acoustic Model
     - Physical Models of Hearing
 
+## 06 PQMF Filter Bank, MPEG-1 / MPEG-2 BC Audio :<br> [![NBViewer](https://badgen.net/badge/Launch/on%20NBViewer/blue?icon=terminal)](https://nbviewer.jupyter.org/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_06_PQMF_FilterBank.ipynb)[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/GuitarsAI/AudioCodingTutorials/master?filepath=AC_06_PQMF_FilterBank.ipynb)[![Google Colab](https://badgen.net/badge/Launch/on%20Google%20Colab/black?icon=terminal)](https://colab.research.google.com/github/GuitarsAI/AudioCodingTutorials/blob/master/AC_06_PQMF_FilterBank.ipynb)[![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://youtu.be/yiPMDqBT7qk)
+
+    - The Basic Paradigm of T/F Domain Audio Coding
+    - MPEG Audio Standardization Philosophy
+    - MPEG 1/2
+        - MPEG-1 Audio
+            - The main building blocks
+            - MPEG Audio - Short Description of the Layers
+            - Block Diagram MPEG-1 Layer 1
+            - Block diagram Layer-3
+    - Example for the Time/Frequency Resolution for the 2-Stage Layer III Coder
+    - MPEG - Layer-1, -2 and -3 Compression: Header
+    - The Pseudo-Quadrature-Mirror Filter Bank (PQMF)
+        - PQMF Definition
+        - PQMF Reformulation
+        - PQMF Design
+    - Python Example Optimization
+    - PQMF Optimization
+        - Optimization Function
+        - Python Example
+        - Unity Condition
+    - PQMF Polyphase Implementation
+    - Hybrid Filter Bank & Aliasing
+        - Problem of Aliasing in a Cascaded Filter Bank
+        - Aliasing Reduction Structure (MP3)
+    - MPEG Audio - Layer-3: Bitstream
+    - MPEG-1 Audio Decoder
+        - MPEG Audio – General Decoder Structure
+        - MPEG - Audio Decoder Process (1) Layer-3 Decoder flow chart
+        - MPEG - Audio Decoder Process Layer-3 Decoder Diagramm
+    - Annex: Abbreviations and Companies
+    
  # YouTube Playlist
  [![Youtube](https://badgen.net/badge/Launch/on%20YouTube/red?icon=terminal)](https://www.youtube.com/playlist?list=PL6QnpHKwdPYjRWkWLswWmxFrDmj6leRwh)