Sample CEP v.4.1 json
Sample JSON file for a 2-minute synthesized audio track. The spectrogram of the synthesized audio is shown in the image.
Listen to more live and write your own protocols at https://binaural.sopcos.org
{
"id": "cep_v4_1_engine_validator",
"is_public": false,
"name": "CEP v4.1 Cross-Engine Audio & Overlay Validator",
"version": 4.1,
"category": "therapeutic",
"metadata": {
"author": "Maestro & SOPCOS Brain Lab",
"created": "2026-07-22T13:00:00.000Z",
"updated": "2026-08-08T00:00:00.000Z",
"license": "CC-BY-NC-SA-4.0",
"language": "tr",
"tags": [
"validation",
"spectrogram-test",
"cross-platform",
"cep-v4.1",
"guided",
"shadow-masking",
"background-loop",
"biometric",
"v4.1-engine-test"
]
},
"guidance": {
"eyes": "open",
"voice_intro": false,
"show_progress": true,
"show_countdown": true,
"show_stage_title": true,
"show_breath_circle": false
},
"assets": {
"image": "https://sopcos.io/img/validator_v4.png",
"thumbnail": "https://sopcos.io/img/validator_v4.png"
},
"experience": {
"intention": "A 2-minute technical validation protocol designed to validate Flutter JUCE AudioEngine and React Web Audio API outputs through A/B testing using CEP v4.1 synthesis, overlay, loop, and biometric cue semantics.",
"difficulty": "advanced",
"session_goal": "Validate cross-engine audio synthesis parity, overlay rendering, background loop behavior, and biometric trigger semantics",
"arrival_state": "focused_awareness",
"transition_style": "precise",
"recommended_posture": "seated",
"recommended_duration": "short",
"breathing": {
"pattern": "coherent",
"inhale": 4,
"hold": 0,
"exhale": 4
}
},
"audio": {
"synthesis": {
"waveform": "sine",
"carrier_hz": 100.0
},
"modulation": {
"type": "am",
"shape": "sine"
},
"environment": {
"noise_color": "pink",
"drone_ratio": 0.5,
"drone_hz": 50.0,
"drift_speed": 0.02,
"spatial_hz": 0.05,
"spatial_mode": "auto",
"drone_harmonics": [
0.5,
0.25,
0.125
],
"background": {
"enabled": true,
"asset_url": "https://sopcos.io/audio/ambient/engine_test_ambient.wav",
"format": "wav",
"clip": {
"start_sec": 0,
"end_sec": 60
},
"active_window": {
"start_sec": 0,
"end_sec": null
},
"gain_db": -18.0,
"loop": {
"enabled": true,
"crossfade_ms": 2000
},
"fade_in_ms": 2000,
"fade_out_ms": 3000,
"bus": "ambient"
}
},
"guided": {
"enabled": true
},
"cues": [
{
"id": "cue_guided_segment_01",
"type": "voice_prompt",
"asset_url": "https://sopcos.io/audio/cues/engine_test_guided.flac",
"format": "flac",
"clip": {
"start_sec": 1,
"end_sec": 5
},
"trigger": {
"mode": "absolute_time",
"t_sec": 2
},
"bus": "voice",
"gain_db": 0.0,
"fade_in_ms": 100,
"fade_out_ms": 300,
"loop": false,
"priority": 5,
"duck": {
"target_bus": "binaural",
"reduction_db": -8,
"attack_ms": 150,
"release_ms": 700
}
},
{
"id": "cue_guided_segment_02",
"type": "voice_prompt",
"asset_url": "https://sopcos.io/audio/cues/engine_test_guided.wav",
"format": "wav",
"clip": {
"start_sec": 7,
"end_sec": 13
},
"trigger": {
"mode": "absolute_time",
"t_sec": 35
},
"bus": "voice",
"gain_db": -1.0,
"fade_in_ms": 100,
"fade_out_ms": 400,
"loop": false,
"priority": 5,
"duck": {
"target_bus": "binaural",
"reduction_db": -8,
"attack_ms": 150,
"release_ms": 700
}
},
{
"id": "cue_stage_relative_ambient",
"type": "ambient_overlay",
"asset_url": "https://sopcos.io/audio/cues/engine_test_rain.wav",
"format": "wav",
"clip": {
"start_sec": 7,
"end_sec": 17
},
"trigger": {
"mode": "stage_relative",
"stage_index": 1,
"offset_sec": 5
},
"bus": "ambient",
"gain_db": -12.0,
"fade_in_ms": 1000,
"fade_out_ms": 1500,
"loop": true,
"priority": 1,
"duck": null
},
{
"id": "cue_shadow_voice",
"type": "voice_prompt",
"asset_url": "https://sopcos.io/audio/cues/engine_test_suggestion.wav",
"format": "wav",
"clip": {
"start_sec": 0,
"end_sec": 12
},
"trigger": {
"mode": "absolute_time",
"t_sec": 65
},
"bus": "shadow",
"gain_db": -18.0,
"fade_in_ms": 300,
"fade_out_ms": 500,
"loop": false,
"priority": 3,
"duck": null,
"shadow": {
"enabled": true,
"filter": {
"type": "lowpass",
"cutoff_hz": 1200,
"slope_db_oct": 24
},
"noise": {
"enabled": true,
"color": "pink",
"gain_db": -14
}
}
},
{
"id": "cue_biometric_hr",
"type": "voice_prompt",
"asset_url": "https://sopcos.io/audio/cues/engine_test_calm.flac",
"format": "flac",
"clip": {
"start_sec": 0,
"end_sec": 8
},
"trigger": {
"mode": "biometric",
"metric": "heart_rate",
"window": {
"duration_sec": 15,
"aggregation": "mean",
"max_age_sec": 5
},
"condition": {
"operator": "above",
"threshold": 95,
"hysteresis": 3
},
"cooldown_sec": 120
},
"bus": "voice",
"gain_db": 0.0,
"fade_in_ms": 300,
"fade_out_ms": 500,
"loop": false,
"priority": 10,
"duck": {
"target_bus": "binaural",
"reduction_db": -8,
"attack_ms": 200,
"release_ms": 800
}
},
{
"id": "cue_biometric_spo2",
"type": "voice_prompt",
"asset_url": "https://sopcos.io/audio/cues/engine_test_spo2.ogg",
"format": "ogg",
"clip": {
"start_sec": 0,
"end_sec": 6
},
"trigger": {
"mode": "biometric",
"metric": "spo2",
"window": {
"duration_sec": 10,
"aggregation": "mean",
"max_age_sec": 5
},
"condition": {
"operator": "below",
"threshold": 94,
"hysteresis": 2
},
"cooldown_sec": 120
},
"bus": "voice",
"gain_db": -3.0,
"fade_in_ms": 300,
"fade_out_ms": 500,
"loop": false,
"priority": 10,
"duck": {
"target_bus": "binaural",
"reduction_db": -8,
"attack_ms": 200,
"release_ms": 800
}
}
]
},
"visual": {
"scene": "void",
"palette": "deep_blue",
"brightness": 0.1,
"motion_speed": 0.0,
"breathing_ring": false,
"particle_density": 0.0
},
"stages": [
{
"name": "Phase 1: Filter Sweep & Alpha Anchor",
"type": "ramp",
"duration": 30,
"audio": {
"binaural_hz": {
"mode": "constant",
"value": 10.0
},
"mod_depth": {
"mode": "constant",
"value": 0.2
},
"filter_cutoff": {
"from": 4000,
"to": 500,
"mode": "ramp",
"curve": "exponential"
},
"spatial_hz": {
"mode": "constant",
"value": 0.02
},
"drone_amps": [
{
"mode": "constant",
"value": 0.2
},
{
"mode": "constant",
"value": 0.1
}
],
"noise_bands": [
{
"mode": "constant",
"value": 0.1
},
{
"mode": "constant",
"value": 0.05
}
]
}
},
{
"name": "Phase 2: Spatial Oscillation & Binaural Ramp",
"type": "ramp",
"duration": 30,
"audio": {
"binaural_hz": {
"from": 10.0,
"to": 4.0,
"mode": "ramp",
"curve": "linear"
},
"mod_depth": {
"mode": "constant",
"value": 0.3
},
"filter_cutoff": {
"mode": "constant",
"value": 500
},
"spatial_hz": {
"mode": "oscillate",
"center": 0.08,
"amplitude": 0.04,
"osc_hz": 0.05,
"waveform": "sine",
"phase": 0.0
},
"drone_amps": [
{
"from": 0.2,
"to": 0.4,
"mode": "ramp",
"curve": "linear"
},
{
"mode": "constant",
"value": 0.1
}
],
"noise_bands": [
{
"mode": "constant",
"value": 0.1
},
{
"mode": "constant",
"value": 0.05
}
]
}
},
{
"name": "Phase 3: High Mod-Depth & Delta Lock",
"type": "hold",
"duration": 30,
"audio": {
"binaural_hz": {
"mode": "constant",
"value": 2.0
},
"mod_depth": {
"mode": "constant",
"value": 0.5
},
"filter_cutoff": {
"mode": "constant",
"value": 300
},
"spatial_hz": {
"mode": "oscillate",
"center": 0.04,
"amplitude": 0.02,
"osc_hz": 0.02,
"waveform": "sine",
"phase": 0.0
},
"drone_amps": [
{
"mode": "constant",
"value": 0.4
},
{
"mode": "constant",
"value": 0.2
}
],
"noise_bands": [
{
"mode": "constant",
"value": 0.2
},
{
"mode": "constant",
"value": 0.1
}
]
}
},
{
"name": "Phase 4: High-Frequency Flare & Filter Rebound",
"type": "ramp",
"duration": 30,
"audio": {
"binaural_hz": {
"from": 2.0,
"to": 100.0,
"mode": "ramp",
"curve": "exponential"
},
"mod_depth": {
"from": 0.5,
"to": 0.1,
"mode": "ramp",
"curve": "linear"
},
"filter_cutoff": {
"from": 300,
"to": 3500,
"mode": "ramp",
"curve": "exponential"
},
"spatial_hz": {
"mode": "constant",
"value": 0.1
},
"drone_amps": [
{
"from": 0.4,
"to": 0.1,
"mode": "ramp",
"curve": "linear"
},
{
"from": 0.2,
"to": 0.05,
"mode": "ramp",
"curve": "linear"
}
],
"noise_bands": [
{
"from": 0.2,
"to": 0.05,
"mode": "ramp",
"curve": "linear"
},
{
"mode": "constant",
"value": 0.02
}
]
}
}
],
"biometrics": {
"enabled": true,
"required": false,
"metrics": [
"heart_rate",
"spo2"
]
}
}
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