Hi,
first of all you have to demodulate a wave by using peak detection,
then use a logarithm function after that you can see a vector
then calculate an angle of it. If an angle equal a zero then add by 2
else
divide by ...
I'll send an example to you directly.
Mike
jdaltonnal wrote:
> The program I'm currently working on reads in a .wav file, and puts
> the data points into an array. The user creates the .wav file in a
> seperate program, indicating the number of data points desired...etc.
> There is only one set of data points in the array, the y values (in
> cartesian notation). The x values simply range from 0 to the number
> of data points specified by the user.
> What I'd like to able to do, is be able to read the function back from
> these data points.
For example, if a sine wave is stored in the .wav
> file, can labview somehow detect that it is a sine wave? Or perhaps
> compare the array with an array of sine values and ouput a boolean
> variable saying "yes, they match" or "no they are different". Having
> the ability to do this would greatly help my program.
> The problem with AWC (the program that generates the .wav file) is
> that the points needs to be edited a bit for different functions. For
> example, if the user chooses a sine wave in AWC, I need to divide all
> of these points by 2. If the user chooses an exponential function, I
> need to add 2 to all these numbers. However, I have no means to
> distinuguish between a sine wave and an exponential wave.
> If anyone has had a similar problem, or has a solution, feel free to
> email me at jdalton@nal.com or reply to this message. Thanks!
