EVP Ghost Signal

EVP Ghost Signal is a professional-grade paranormal audio investigation tool. Record, analyze, and export EVP (Electronic Voice Phenomenon) sessions with real-time detection, spectrogram visualization, and EMF monitoring.

INVESTIGATION RECORDING
- High-quality audio recording with adjustable gain (up to +40 dB)
- Noise reduction and band-pass filter (300-3000 Hz voice range)
- Swipe between Waveform, Spectrogram, and EMF views while recording
- Tone generator (white noise, pink noise, frequency sweep) with adjustable volume
- Bookmark key moments during recording

REAL-TIME DETECTION
- Anomaly detection flags frequency spikes exceeding 3 standard deviations
- Whisper, voice, and breath pattern detection via formant analysis
- Live detection counters and alert banners during recording
- All events saved with timestamps for later review

SPECTROGRAM ANALYSIS
- Real-time frequency visualization with 5 color themes
- Orange crosshair markers on anomaly events
- Immersive full-screen mode
- Ghost Green, Phantom Blue, Infrared, Ultraviolet, and Classic Amber themes

EMF METER (Pro)
- Magnetic field measurement in microtesla using device magnetometer
- Full-circle gauge with color-coded levels (Normal to Extreme)
- Live history graph with spike markers
- EMF data saved with recordings and included in exports

PLAYBACK & EDITING (Pro)
- Reverse audio playback with speed control (0.5x-2x)
- Tap-to-seek waveform navigation
- Waveform trim tool — trimmed clips inherit all metadata
- 5-band parametric EQ with presets: EVP Enhance, Whisper Boost, Noise Cut, Voice Isolate
- Detection timeline with filterable list and tap-to-jump
- Timestamp bookmarks with red flash confirmation
- On-device audio transcription

EXPORT TOOLS (Pro)
- HD investigation video (1080x1920 @ 30fps) with animated spectrogram, waveform, EMF meters, detection flash, and timeline markers
- Filtered audio export with applied EQ and filters
- Multi-page PDF session reports with detection event logs
- Multi-session investigation log PDF
- Save videos to Camera Roll

ADDITIONAL FEATURES
- Spirit Box frequency sweep simulator (Forward, Reverse, Random)
- Session geolocation tagging with place names
- Session map with color-coded pins
- Investigation library with search and favorites
- 5 color themes throughout the app
- Contextual tips and How to Use guide
- Onboarding walkthrough

PRIVACY & ON-DEVICE P