A high-rate data hiding technique for audio signals based on IntMDCT quantization

Jonathan Pinel (1) , Laurent Girin (2)

1 GIPSA-CICS - GIPSA - Communication Information and Complex Systems
2 GIPSA-MAGIC - GIPSA - Machines parlantes, Gestes oro-faciaux, Interaction Face-à-face, Communication augmentée

Data hiding consists in hiding/embedding binary information within a signal in an imperceptible way. In this study we pro- pose a high-rate data hiding technique suitable for uncompressed audio signals (PCM as used in Audio-CD and .wav format). This technique is appropriate for non-securitary applications, such as enriched-content applications, that require a large bitrate but no particular robustness to attacks. The proposed system is based on a quantization technique, the Quantization Index Modulation (QIM) applied on the Integer Modified Discrete Cosine Transform (Int- MDCT) coefficients of the signal and guided by a PsychoAcoustic Model (PAM). This technique enables embedding bitrates up to 300 kbps (per channel), outperforming a previous version based on regular MDCT.

Mots clés: Watermarking; data hiding; intMDCT

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Jonathan Pinel, Laurent Girin. A high-rate data hiding technique for audio signals based on IntMDCT quantization. DAFx 2011 - 14th International Conference on Digital Audio Effects, Sep 2011, Paris, France. pp.353-356. ⟨hal-00695759⟩