P14345: Hybrid Audio Dynamics Processor
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Detailed Design

Table of Contents

Prototyping, Engineering Analysis, Simulation

 Used to determine Power Supply Current Requirements

Used to determine Power Supply Current Requirements

 Input Section/BPF Simulation Schematic

Input Section/BPF Simulation Schematic

 Input Section/BPF Simulation Frequency/Phase Plot

Input Section/BPF Simulation Frequency/Phase Plot

 LPF Design Parameters

LPF Design Parameters

 LPF Design Architecture

LPF Design Architecture

 LPF Design Monte-Carlo Analysis

LPF Design Monte-Carlo Analysis

White Page 1: DAC Scaling for Improved VCA Precision
White Page 2: Analog Noise Budget Analysis

Clock Tree Details

Drawings, Schematics, Flow Charts, Simulations

 Schematic for Power Supply

Schematic for Power Supply

 PCB Layout for Power Supply

PCB Layout for Power Supply

 3D Rendering of Power Supply

3D Rendering of Power Supply


A PDF schematic of the Power Supply can be found.

 Top Level Architecture

Top Level Architecture

 Input Section

Input Section

 Precision Rectifier

Precision Rectifier

 VCA Gain Modification Section

VCA Gain Modification Section

 Line Driver Output

Line Driver Output

 Anti-Aliasing LPF

Anti-Aliasing LPF

 MCU

MCU

 Level Shifter

Level Shifter

 Relays

Relays


A PDF schematic of the Main Processor can be found here.

 Software Flowchart.

Software Flowchart.

 Software Flowchart for top-level operation.

Software Flowchart for top-level operation.

 Software Flowchat of block that chooses when compression starts/stops

Software Flowchat of block that chooses when compression starts/stops

 Software Flowchart of block that performs compression.

Software Flowchart of block that performs compression.

Software pseudocode can be found here.

 Software Flowchart of block that changes auto-mode parameters

Software Flowchart of block that changes auto-mode parameters

 High Level Auto Mode

High Level Auto Mode

 The successive algorithm. The active low enable refers to the idea that you would only need to improve your compression settings if gain reduction was occurring in the safety compression block.

The successive algorithm. The active low enable refers to the idea that you would only need to improve your compression settings if gain reduction was occurring in the safety compression block.

More detailed information on auto mode can be found here.

A list of all IO mappings is located here.

Bill of Materials (BOM)

 Bill of Materials Summary

Bill of Materials Summary

A spreadsheet of the Bill of Materials is located here.

Test Plans & Project Schedule

MSD II Schedule can be downloaded here.
MSD II Testing Plan can be downloaded here.

Risk Assessment

 Most Severe Non-Mitigated Risks

Most Severe Non-Mitigated Risks

A comprehensive list of risks with methods of mitigation and mitigation dates is located here.

Design Reviews

First Detailed Design Review in pdf format

Second Detailed Design Review in pdf format


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