Clean WhatsApp Call Audio

I have a single WhatsApp video call with my four-year-old daughter that runs just under a quarter of an hour. The conversation is precious, but the background hiss and general room noise make it tough to hear her little voice. All I need is a cleaned-up version where her speech is clear and natural while the unwanted noise is removed or greatly reduced. Please keep the picture untouched; this is strictly an audio clean-up task. Deliverables • Final video file with the improved audio in the same resolution/format as the original • Separate WAV or MP3 of the restored track (optional but appreciated) Acceptance Criteria • Daughter’s voice intelligible throughout, with no harsh gating or robotic artifacts • Lip-sync preserved • Overall volume balanced so normal listening levels work without strain If you normally work in iZotope RX, Adobe Audition, Audacity, DaVinci Resolve Fairlight or a similar toolset, that’s perfect—just let me know what you plan to use. I can upload the original file as soon as we start, and I’d appreciate a quick turnaround if possible.