embedding one bit per frame of audio data where a frame of audio data is 16 milliseconds a second embodiment of the present invention provides a method for embedding two bits of information for a frame of audio data referring to fig1 the flow diagram for the steps of embedding and recovering one bit of information per audio frame is depicted note that the embedded information is generically labeled ones and zeros to be embedded these ones and zeros may be an audio signal a watermark or other coded information the digital cover or u201c host u201d audio signal is first provided 100 to embed one bit of information two tones at frequencies f 0 and f 1 are selected and generated for embedding bit 0 and bit 1 respectively the host audio is divided 110 into non overlapping segments of length 16 milliseconds in this embodiment of the present invention f 0 is 1875 hz and f 1 is 2625 hz 16 bits per sample 16000 samples second 256 point dft but other combinations of f 0 and f 1 will work equally well for every frame of host audio the frame power f e is computed 120 and only one bit is embedded 130 into the host audio frame if it is determined 140 that the bit to be embedded is a 0 then the.