I am working on a Sound Effects project, generating short sfx (clicks, beeps, chimes, marimba) that play on a specific piece of hardware and speaker.  I use Sound Forge Pro 13 to edit audio.  The client has given me specifics on the volume level and "crest factor". I've never worked with crest factor before.  The client suggested "using compression to make the average level ~-14 dB FS and a crest factor between 9-15 dB."    A few questions:  Are there any tools in the Sound Forge 13 that I could use to see and modify (compress) the "crest factor" to the client's specs.     I have a separate question in that I'm trying to understand why the client wants me to manage the "crest factor" of the sound. The sfx get crunched to 16bit-16khz wav files, before ultimately being converted to 32kb/s opus files. I'm wondering if managing the "crest factor" helps with any clipping that may occur at play back time.  Any insight is appreciated.