Hi Shireen,, A few ideas. 1. If you know the function of the sine wave, use the function plotter in the vOICe and hear it in real-time. 2. You can do the same with mathtracks and the audio graphing calculator from View Plus Technologies if I am not mistaken. 3. Alternatively, generate the graph in Excel and send the image to someone who can print it in Braille. 4. Use prott with the vOICe. Prott is a program many linguists use to study speech patterns etc. Pranav
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