Psychoacoustic AGC Laboratory

[1] Baseline Leaky Power AGC Single-pole detector

[2] WDSP / NR0V Hang + Lookahead Frozen gain in pauses

[3] Dual-Time-Constant Syllabic + RMS Limiter Preserves speech dynamics

[4] Sub-Band / ERB 4-Band Filterbank Prevents pileup ducking

[5] Noise-Adaptive Floating Knee 100% linear below noise

[6] Pitch-Tracker Adaptive Resonator Decoupled tone vs noise

Real-Time Multi-Trace Envelope (0 to -50 dBFS) Live Rolling Audio History

Communication Passband Spectrum (0 to 3.5 kHz) Filterbank Crossovers & Pitch Tracker

🎧 3D Soundstage

0.0°

Drag surface or use [ / ] keys to aim head focus

JA1ABC 490 Hz 0.0 dB

NQ6N 600 Hz 0.0 dB

VK9X 740 Hz 0.0 dB

Audio Passband:

Head Pan Range:

±20°

Focus Attenuation:

36 dB

Hardware Meters

HANG

Input Peak -90 dBFS

Gain Reduction 0.0 dB

Output Peak -90 dBFS

Objective Psychoacoustic Scores

Speech Modulation Depth (STI) --%

Noise Pumping (Fatigue Score) --

Ducking Depth: 0 dB

Stereo Balance: 0.0 dB

Test Scenario

RF / Audio Stimulus

Custom WAV Upload

Dynamic Parameters

Hang Duration 300 ms

Compression Knee -50 dBFS

Decay Rate 200 dB/s

Inter-Band Coupling 15%

Knee Above Noise Floor +8 dB

Pitch Tracker Center 650 Hz

TRIAL #1

Double-Blind Perceptual Evaluation

Listen to Condition [A], Condition [B], and Unknown [X]. Rate intelligibility, listening fatigue, and overall preference.

RF Test Scenario:

Evaluation Pair:

Blind Stimuli Player (Click or use keys [A], [B], [X]) Ready to Play

Subjective Perceptual Assessment Record observations before revealing identities

Evaluator Callsign / ID:

1. Signal Intelligibility & Segregation 3.5 / 5.0 (Moderate Separation)

How well could you separate and copy the desired signal without it being ducked, masked, or distorted?

1: Buried / Ducked 3: Copyable with Effort 5: Flawless Segregation

2. Listening Comfort & Low Fatigue 3.5 / 5.0 (Acceptable Background)

How comfortable was the background noise? Did aggressive gain pumping or breathing cause auditory fatigue?

1: Exhausting Noise Pumping 3: Typical Receiver Noise 5: Quiet / Smooth Stationary

3. Overall Perceptual Preference No Preference (Equal)

Which condition would you prefer running in your receiver for this scenario?

4. ABX Match Identification Select your guess below

Based on your listening, which condition did Unknown [X] match?

Operator Notes / Observations:

Session Data Collection Summary

0 Trials Recorded

--% ABX Accuracy

-- Mean Intel (1-5)

-- Mean Comfort (1-5)

Dataset Export & Management

Trial History Ledger 0 entries

#	Scenario	Pair	Pref	Intel	Comf	ABX
No trials recorded yet. Listen to Condition A, B, and X, rate them, and click Submit.