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

Jonathan Pinel 1 Laurent Girin 2
1 GIPSA-CICS - CICS
GIPSA-DIS - Département Images et Signal
2 GIPSA-MAGIC - MAGIC
GIPSA-DPC - Département Parole et Cognition
Abstract : 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.
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Submitted on : Wednesday, May 9, 2012 - 5:38:10 PM
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Jonathan Pinel, Laurent Girin. A high-rate data hiding technique for audio signals based on IntMDCT quantization. 14th International Conference on Digital Audio Effects (DAFx-11), Sep 2011, Paris, France. pp.353-356. ⟨hal-00695759⟩

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