AV Institute LLCDSP & Professional Audio
Digital signal processing, mics, and acoustic echo
Audio is where commercial AV gets technical. Understand digital audio and DSP fundamentals — sample rates, gain structure, dB and headroom — then microphones, routing, automixing, equalization, and acoustic echo cancellation. Finish with safe commissioning and tuning.
Design and safely commission a small-room audio DSP path.
DSP & Professional Audio — Knowledge Quiz
10 multiple-choice questions, four choices each (A–D), exactly one correct answer. Pass mark is 80%. Retakes are enabled.
Key competency tested: Design and safely commission a small-room audio DSP path.
- 01
A 48 kHz sample rate can faithfully capture audio up to what frequency (Nyquist)?
- 02
You hear distortion during a meeting. Which stage is most likely clipping, and what do you do?
- 03
A ceiling beamforming microphone array requires which of the following?
- 04
What does acoustic echo cancellation (AEC) remove?
- 05
In a conferencing DSP, what is the AEC reference signal?
- 06
Why apply a high-pass filter (e.g. 120 Hz) to a conferencing mic?
- 07
A limiter on a DSP speaker output is used to:
- 08
Why delay the nearer ceiling speakers in a room?
- 09
Which is the correct order for fixing acoustic feedback?
- 10
During commissioning, how do you verify AEC is working?
Answer key verified with explanations. This is an AV Institute LLC assessment; it does not imply manufacturer endorsement or official third-party certification.