Hiding data in audio using modified CPT scheme

This paper presents a method to hide information in audio based on CPT scheme. The proposed method is done by modifying CPT scheme used for hiding data in binary image. We do not use two matrices as key for embedding and extracting process to reduce the processing time. To ensure the security, we use Arnold transform to scramble the secret message. Experimental results show that the proposed method is inaudible and suitable for hiding data in audio.