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Speech Hiding Based on Quantization of LPC Parameters | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 25, Issue 4, 2014, Pages 133-144 | ||
| Author | ||
| Saad Najim Al-Saad | ||
| Abstract | ||
| An efficient method for hiding speech signal is introduced in this paper. The features of secret speech extracted with Linear Predictive Coding LPC, which converted to Line Spectral Frequency LSF. The parameters embedded in cover speech after transforming it. The cover speech is converted by Discrete Wavelet Transform (DWT) (intermediate domain), which splits the signal in high frequency and low frequency. The Fast Fourier Transform (FFT) applied on high frequency to produce phases and magnitudes (frequency domain). The Chaotic Key Generation (CKG) is considered stego-key of frame selection. The Inverse Fast Fourier Transform (IFFT) and Inverse Wavelet Transform (IDWT) are applied respectively to return to time domain and obtained the stego speech. The stego speech is perceptually indistinguishable from the equivalent cover speech, allowing to hide a spacious amount of secret information, and rendering the steganalysis more complex. | ||
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