# kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system architecture

> Architecture diagram of the GitHub repository kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system
- Repository: https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system

## Overview

This MATLAB project simulates PCM-style audio transmission from input preparation through modulation, channel impairment, and receiver recovery, with DSP analysis and verification. The README documents these stages and their signal flow; the tree contains one MATLAB script and two audio files. Since no source excerpt was available, the graph reflects documented relationships only and uses the script path for its conceptual processing stages.

Main entry points: [`Code and Audio/digital_comm_system.m`](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m) (Initialize and Resample), [`Code and Audio/recording.wav`](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/recording.wav) (Recording Audio), [`Code and Audio/handel.wav`](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/handel.wav) (Handel Audio)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_input["Input Analysis"]
  node_recording["Recording Audio<br/>[recording.wav]"]
  node_handel_file["Handel Audio<br/>[handel.wav]"]
  node_initialize["Initialize and Resample"]
  node_spectral["Spectral Analysis"]
end

subgraph group_transmitter["Transmitter"]
  node_anti_alias["Anti-Alias Filter"]
  node_modulate["AM Modulation"]
end

subgraph group_channel["Channel"]
  node_multipath["Multipath Fading"]
  node_interference["Tone Interference"]
  node_awgn["AWGN Noise"]
end

subgraph group_receiver["Receiver"]
  node_bandpass["Band-Pass Filter"]
  node_notch["Notch Filter"]
  node_demodulate["Demodulation"]
  node_recovery["Recovery Filter"]
end

subgraph group_verification["Verification"]
  node_filter_analysis["Filter Analysis"]
  node_system_verification["System Verification"]
end

node_audio_user(("Audio Input"))
node_handel(("handel Signal"))
node_recovered(("Recovered Audio"))

node_audio_user -->|"provides audio"| node_initialize
node_handel -->|"provides signal"| node_initialize
node_recording -->|"provides audio"| node_initialize
node_handel_file -->|"provides audio"| node_initialize
node_initialize -->|"analyzes signal"| node_spectral
node_initialize -->|"passes baseband"| node_anti_alias
node_anti_alias -->|"filtered signal"| node_modulate
node_modulate -->|"transmits signal"| node_multipath
node_multipath -->|"adds echoes"| node_interference
node_interference -->|"adds tone"| node_awgn
node_awgn -->|"received signal"| node_bandpass
node_bandpass -->|"filters passband"| node_notch
node_notch -->|"removes tone"| node_demodulate
node_demodulate -->|"demodulates"| node_recovery
node_recovery -->|"recovers audio"| node_recovered
node_anti_alias -->|"analyzes filter"| node_filter_analysis
node_bandpass -->|"analyzes filter"| node_filter_analysis
node_recovery -->|"analyzes filter"| node_filter_analysis
node_filter_analysis -->|"supports checks"| node_system_verification

click node_recording "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/recording.wav"
click node_handel_file "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/handel.wav"
click node_initialize "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_spectral "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_anti_alias "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_modulate "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_multipath "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_interference "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_awgn "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_bandpass "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_notch "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_demodulate "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_recovery "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_filter_analysis "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"
click node_system_verification "https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_recording,node_handel_file,node_initialize,node_spectral toneBlue
class node_anti_alias,node_modulate toneAmber
class node_multipath,node_interference,node_awgn toneMint
class node_bandpass,node_notch,node_demodulate,node_recovery toneRose
class node_filter_analysis,node_system_verification,node_audio_user,node_handel,node_recovered toneIndigo
```

## Components

### Input Analysis

- [Recording Audio](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/recording.wav): `Code and Audio/recording.wav`
- [Handel Audio](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/handel.wav): `Code and Audio/handel.wav`
- [Initialize and Resample](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [Spectral Analysis](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`

### Transmitter

- [Anti-Alias Filter](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [AM Modulation](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`

### Channel

- [Multipath Fading](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [Tone Interference](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [AWGN Noise](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`

### Receiver

- [Band-Pass Filter](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [Notch Filter](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [Demodulation](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [Recovery Filter](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`

### Verification

- [Filter Analysis](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`
- [System Verification](https://github.com/kareemmas3ud/dsp-adaptive-pcm-audio-transmission-system/blob/main/Code%20and%20Audio/digital_comm_system.m): `Code and Audio/digital_comm_system.m`

### Other components

- **Audio Input**
- **handel Signal**
- **Recovered Audio**

## Connections

- Audio Input → Initialize and Resample: provides audio
- handel Signal → Initialize and Resample: provides signal
- Recording Audio → Initialize and Resample: provides audio
- Handel Audio → Initialize and Resample: provides audio
- Initialize and Resample → Spectral Analysis: analyzes signal
- Initialize and Resample → Anti-Alias Filter: passes baseband
- Anti-Alias Filter → AM Modulation: filtered signal
- AM Modulation → Multipath Fading: transmits signal
- Multipath Fading → Tone Interference: adds echoes
- Tone Interference → AWGN Noise: adds tone
- AWGN Noise → Band-Pass Filter: received signal
- Band-Pass Filter → Notch Filter: filters passband
- Notch Filter → Demodulation: removes tone
- Demodulation → Recovery Filter: demodulates
- Recovery Filter → Recovered Audio: recovers audio
- Anti-Alias Filter → Filter Analysis: analyzes filter
- Band-Pass Filter → Filter Analysis: analyzes filter
- Recovery Filter → Filter Analysis: analyzes filter
- Filter Analysis → System Verification: supports checks