According to the documentation, the sound data (first input to sound()) is an mx1 or mx2 matrix. Your sound data are 1x2001. Sound data typically contains values between [-1,1]. The range of your sound data is [0,2].
Valid sampling rates (second input to sound()), are 1000-384000Hz, accepted by Matlab, but also depend on your hardware. In reality, 1000Hz is very low for standard hardware. My Realtek audio supports a 44.1k/48k/96k/192kHz sample rate. To see info on your audio card in Windows, run dxdiag (win + r), and look at the Sound tab.
If you run your audio without specifying the sampling rate or specifying a much higher rate such as 44100, you should hear two clicks.
sound(x'-1, 44100)
- transposed to conform to the expected inputs (a column vector)
- -1 to conform to the typical range of audio data
