The sound made by my voicei adjust that pitch, and also add a reverb. You can just use it or deformation it freely. But if there's a work made using this sound,i'd appreciate it if you could let me know. (like youtube link).
Male yawning using a zoom h6 with an xy mic and a foam screen and tripod in a controlled bedroom with tiled floors. Recorded standing in front of the recorder. Recorded for a school project for a sfx library.