We record the sound in high resolution, with quality microphones, with a large frequency range 20Hz-50kHz. We use 24 bits and 96KHz during the mastering. The interest is to keep the best of the sound, and to be able to restore it with the best qualities, for 4K screens, showrooms, and salons.
This quality will be reduced by a video sharing platform (Youtube Vimeo Instagram Facebook ...). The bit rates are reduced to 320Kbps and the sampling rate to 48Khz. This compression is a necessary evil so that the reading is possible on the Internet.