Demo video

Sample audios

Note1: All the hidden bits are converted from the contents picked from Page 1 to Page 5,
Chapter one, Wireless Communications, Andrea Goldsmith, Cambridge university press, 2005.

Note2: The encoding rate, e.g., the number of hidden bits (encoded/injected into the audio clip) per second,
varies with the energy of different audio clips below.

Note3: We only count the useful hidden bits (a.k.a. goodput in the paper) in the encoding rate,
excluding the packet header, redundancy, etc.

1. Encode hidden bits into instrumental music.

• Example A
  Source audio
  Encoded audio (encoding rate: 298bps)


• Example B
  Source audio
  Encoded audio (encoding rate: 298bps)

2. Encode hidden bits into vocal music.

• Example A
  Source audio
  Encoded audio (encoding rate: 340bps)


• Example B
  Source audio
  Encoded audio (encoding rate: 381bps)

3. Encode hidden bits into human speech.

• Example A
  Source audio
  Encoded audio (encoding rate: 258bps)


• Example B
  Source audio
  Encoded audio (encoding rate: 265bps)

4. Encode hidden bits into news report.

• Example A
  Source audio
  Encoded audio (encoding rate: 257bps)


• Example B
  Source audio
  Encoded audio (encoding rate: 263bps)