DSP
This section covers digital signal processing in car audio: choosing a platform, getting signal into the processor cleanly, building crossovers, aligning arrival times, measuring the response, applying EQ, and deciding when advanced tools like FIR filters or Dirac-style correction are actually worth the complexity.
Start Here By Task
| If you are trying to do this | Start here | Why this page is first |
|---|---|---|
| Decide whether a DSP belongs in the system at all | Do You Need a DSP? | It frames the practical threshold where DSP becomes worth the money and setup time. |
| Connect a source without breaking the signal chain | Connecting Your Source | It explains the entry points and the constraints before tuning even begins. |
| Set crossovers and output routing correctly | Setting Crossovers in a DSP | It establishes the filter and channel plan that the rest of the tune depends on. |
| Understand why time alignment matters | Why Time Alignment Matters | It connects arrival time to imaging before the workflow gets measurement-heavy. |
| Know what automated correction like Dirac actually does | Dirac Live and What It Does | It separates automation from magic and sets expectations for what the software can and cannot fix. |
Read By Experience Level
Beginner
- Do You Need a DSP?
- Connecting Your Source
- Setting Crossovers in a DSP
- What EQ Can and Cannot Fix
- Why Time Alignment Matters
- Dirac Live and What It Does
Installer
- Platform Comparison and Configuration
- Factory Integration Strategies
- Measurement-Based Alignment
- EQ Workflow and Filter Strategy
- Dirac Live Measurement Procedure
- Three-Way and Active System Design
Engineer
Tuning Workflow
Chapter 12 Section Map
- 12.1 DSP Platform Selection
- 12.2 Input Configuration and Source Integration
- 12.3 Crossover Design and Implementation
- 12.4 Time Alignment Theory and Practice
- 12.5 Equalization and Measurement-Driven Correction
- 12.6 Advanced DSP, FIR Filters, and Room Correction
- 12.7 Complete DSP Setup Walkthrough
- Chapter 12 Section Table of Contents
Core Working Rules
- Routing mistakes beat tuning skill: if the input structure or crossover map is wrong, better EQ will not save the result.
- Measure before you boost: cuts, delay, and level balance usually solve more than aggressive gain stacking.
- Time alignment and crossovers are coupled: arrival time, filter slope, and polarity decisions should be checked together.
- Automation still needs judgment: Dirac, FIR tools, and presets help only when the measurement setup and target are defensible.