BUM16 - Benn's Ultrasonic Modem in 16-FSK

Modem State: INACTIVE

Frequency Band: 16.5 kHz - 19.0 kHz

Protocol: AUTO-DETECT

Payload Configurator

Data Transmission Type

Message Content

Encrypt Message payload

Cipher Key (Password)

Signal Spectrogram (16.5k - 19.0kHz Zoomed)

Waveform Envelope

Acoustic Demodulator

Microphone Live Level

Decode from Direct Audio/Video URL

Decoding Sync Frame Progress

Decoded Output

Waiting for transmission...

Place speaker close to the microphone and hit play.

🛡️ Decryption Key Required

Embed Secret in Audio/Video

1. Select Base Audio/Video File

Upload Music, Podcast or Video (.mp3, .wav, .mp4, etc.)

Click to select file

2. Message Content

Encrypt Message payload

Decryption Password

3. Steganography Parameters

Start Delay: 0s

Modem Volume (Mix Ratio): 15%

💡 Higher values improve microphone recovery but make the ultra-high frequencies slightly more audible.

Stego-Audio Export

Upload a base file and configure payload to begin.

Modem Core Parameters

Symbol Speed Profile Slower durations improve immunity to indoor acoustics/reverberations.

Transmission Protocol Select protocol to encode, or choose Auto-Detect to scan sync frequencies.

Video Export Container Select format container for custom generator and stego video exports.

Current Configuration

🚀 Symbol Duration: 80ms
🎛️ Data Bins: 16 Channels (16.5 kHz - 18.75 kHz)
📡 Sync Bandwidth: 19.00 kHz

Preview Volumetric/Gain

80%

Modem Diagnostic Suite

Run an in-memory loopback test to verify that the cryptographic, quantization, dithering, FSK modulation, and Goertzel demodulation subroutines are fully functioning. No microphone is required.

Modem test suite ready to run...