  Internet is one of the most valuable resources for information communication
and retrievals. Most multimedia signals today are in digital formats. The
digital data can be duplicated and edited with great ease which has led to a
need for data integrity and protection of digital data. The security
requirements such as integrity or data authentication can be met by
implementing security measures using digital watermarking techniques. In this
paper a blind speech watermarking algorithm that embeds the watermark signal
data in the musical (sequence) host signal by using frequency masking is used.
A different logarithmic approach is proposed. In this regard a logarithmic
function is first applied to watermark data. Then the transformed signal is
embedded to the converted version of host signal which is obtained by applying
Fast Fourier transform method. Finally using inverse Fast Fourier Transform and
antilogarithmic function watermark signal is retrieved.
