Upload Voice Note or Audio File
Audio is decoded locally in your browser sandbox using the Web Audio API. No sound files are ever uploaded or transmitted to any server.
The 16kHz & 22kHz Brickwall
Most AI audio models (FastSpeech, Tortoise, standard ElevenLabs) process audio in downsampled 32kHz or 44.1kHz vocoder pipelines. This leaves an unnatural cliff at 16kHz or 22kHz where acoustic frequencies vanish abruptly.
Missing Room Ambience
Authentic phone recordings capture subtle air friction, room reverb, and high-frequency harmonics up to 24kHz. Synthetic audio often exhibits dead silence between phonemes or robotic mechanical buzzing.
Cryptographic Origin Proofs
As AI voice synthesis advances, visual frequency inspection becomes just one forensic layer. Sealed Rose provides creators with cryptographic proof of authentic audio provenance to stop extortion.
Frequently Asked Questions
Audio Forensics & Synthetic Speech Detection
How does a spectrogram detect AI voice clones?
Most commercial AI voice cloning models (ElevenLabs, Tortoise, bark, Coqui) use neural vocoders trained on resampled audio with steep low-pass filters at 16,000 Hz or 22,050 Hz. In a Fourier spectrogram, synthetic audio displays an abrupt "brickwall" shelf where all frequency energy instantly disappears. Genuine microphone recordings show continuous acoustic room decay and harmonic overtones extending beyond 20 kHz.
Is my audio uploaded or stored on any server?
No. The Sealed Rose Voice Spectrogram Analyzer runs entirely on your device using the browser HTML5 Web Audio API and windowed Discrete Fourier Transform. Audio samples never leave your machine.
What types of audio can I analyze?
You can analyze any standard voice recording format, including .mp3, .wav, .m4a, .ogg, and .aac files up to 50MB. This includes voice notes forwarded from Telegram, WhatsApp, Instagram DM, and Discord.
Can sophisticated AI audio bypass frequency cutoff analysis?
Advanced voice synthesis models running at high sample rates (48 kHz) may not have hard 16kHz cutoffs, but they frequently exhibit micro-jitter phase inconsistencies, unnatural phoneme transitions, and robotic harmonic spacing. For high-stakes creator verification, Sealed Rose provides cryptographic audio signing to prove authenticity before leaks occur.
How can creators protect their voice identity from deepfakes?
Creators and talent can register a verified cryptographic identity on Sealed Rose. By registering your official voiceprint and communication channels, fans, partners, and media can instantly distinguish legitimate voice announcements from AI-generated extortion or leaks.
Stop Voice Cloning Leaks Before They Damage Your Reputation
Sealed Rose gives elite creators and public figures verifiable digital sovereignty. Issue cryptographically verified audio notes and lock down your digital likeness.