EYM AUDIO WATERMARK

      The EyM Audio Watermarking tools are shareware utilities that are offered as is . They embed (resp. retrieve) a short data payload within (resp. from) 16-bit PCM audio wav files. The resulting watermarks have been shown to survive MP3 compression, down-sampling and even acoustic coupling (i.e. traveling through the air between a speaker and a microphone) without leading to noticeable degradation of the audio content. Some people may qualify this approach as a blind watermark in the sense that it does not require access to the original audio content in order to retrieve the watermark payload. These applications are free to try. In their demo mode, they should offer enough flexibility to perform a variety of performance tests so that you may assess whether or not they will work for your application before purchasing any license.