[Rising tone]
[Slowly rising tone]
[Tone rises more quickly]
[Rising tone]
[Tone and volume rise even more quickly]
[Tone and volume rise]
[Tone and volume rise more quickly]
[Tone and volume rise to peak and then change to oscillating tone at lower volume]
[Tone bounces between two frequencies]
[Tone still bounces between two frequencies but difference is less]
[Tone steadily bounces between frequencies]
[Frequency bounce increases in difference]
[Tone bounce continues to increase]
[Tone bounce lowers in frequency]
[Tone bounce continues to lower and have greater difference in frequencies]
[Tone bounce steadies]
[Tone bounce speeds up and settles toward middle frequency]
[Tone continues to speed up and narrow]
[Tone bounce steadies at speed and range]
[Audio fades out with picture]