Reversible audio watermarking can restore the original audio data after extracting the watermark and be used for integrity verification and tamper detecting.A reversible fragile watermarking scheme was proposed for audio using intDCT(integer discrete cosine transform) and expansion embedding technology.It is noting that a audio frame would be distorting after undergoing intDCT,amplitude expansion embedding and inverse intDCT.The reason of the distortion was analyzed and the corresponding solution was propos...