AV Institute · Week 8Real-World Capstone Project

Lesson

Signal-Flow Drawings, DSP Flow, Network Plan & Control Sequences

Est. 70 minCompetency: Produce the technical drawings and sequences for the design.

Learning objectives

Draw the signal-flow for audio and video.
Draw the DSP flow with AEC and routing.
Produce the network plan with VLANs and IP schedule.
Write the control sequence of operations.

Lesson content

The technical package turns architecture into drawings a technician can build from: signal-flow for audio and video, the DSP flow, the network plan, and the control sequence of operations.

Signal-flow drawings

Video flow: laptop and codec → switcher → displays (label each hop).
Audio flow: mics → preamp → AEC → automix → codec TX; codec RX → limiter → amp → speakers; content → codec TX.
Show the AEC reference explicitly.

DSP flow

1Per-mic preamp → AEC (reference = far-end RX) → automixer.
2Outputs to codec TX and to the room limiter → amp.
3EQ, HPF, and feedback notches as designed in Week 4.

Network plan

Subnet and gateway; VLANs for control/Dante/video.
IP schedule: device | IP | subnet | VLAN | MAC | port | PoE.
IGMP snooping on, EEE off, QoS/DSCP for AV.

Control sequence of operations

START → power displays → route laptop/code → camera preset → unmute → ON
JOIN CALL → codec dial → mute program → camera tight → route far-end
SHARE LAPTOP → route laptop to display + codec content
SHUTDOWN → mute → hangup if active → power off → STANDBY

Drawings are the contract

These drawings are what the installer, programmer, and commissioner all build from. If they are complete and consistent with each other, the build is straightforward; if not, every role reworks them.

Worked example

The package: a video signal-flow drawing, an audio signal-flow drawing showing the AEC reference, a DSP block diagram, a network diagram with VLANs and the IP schedule, and the control sequence of operations — all consistent with each other and the equipment spec.

Implementation checklist

✓Audio and video signal-flow drawn with the AEC reference.
✓DSP flow shows preamp → AEC → automix → limiter → amp.
✓Network plan with VLANs and IP schedule.
✓Control sequence covers Start/Call/Share/Shutdown.

Downloadable study guide

study-guide.txtcopy-paste ready

01. Draw audio + video signal-flow; show the AEC reference.
02. DSP: preamp → AEC → automix → limiter → amp.
03. Network: VLANs, IP schedule, IGMP on, EEE off, QoS.
04. Control sequence: Start → Call → Share → Shutdown.