want to record own sound
in windows and mac
Creating a start-up sound
You can create a custom start-up sound on your computer.
1. Record your sound in 22050 Hz Mono, with a sample size of 16-bit, using your preferred sound recording or editing software.
Tip: Your sound should be limited to a maximum of 3 seconds in length.
2. Save your sound as an OGG Vorbis file called splash.ogg. There are many free conversion tools online that you can use to convert .WAV and .MP3 files to this format, for example, Audacity.
what program to use in windows, or in mac