Fragile Watermarking technique for temper detection in audio signals

Due to rampant use of digital media and internet, a new danger has given birth to problems such as data tempering and security. Watermarking is the art of hiding some secret text or information in a host message. The host signal after watermarking should not change its characteristics. Least Significant Bit (LSB) technique is the most simple and efficient technique used for the watermarking. In this paper LSB is used on an audio signal to detect tempering of digital data. This technique is simple and has three keys for embedding watermark as well as extracting it.