According to experts in the field, most nature documentaries do indeed use post-production sound editing to enhance or add to the original recordings. While many documentaries strive for authenticity in their portrayal of the natural world, the use of sound editing allows for greater creative control and more engaging storytelling.
In many cases, the sounds captured during filming are not sufficient to fully convey the experience of being in the natural world. For example, distant animal calls or ambient sounds may not have been picked up by the microphones used during filming. In these instances, sound editors may add in similar sounds to create a more immersive experience for the viewer.
Additionally, some sounds captured during filming may not be of high enough quality to be used in the final product. For example, wind noise or handling noise from the recording equipment may need to be removed or minimized in post-production. This can be done using a variety of techniques, such as noise reduction software or manual editing.
While some might argue that the use of post-production sound editing undermines the authenticity of nature documentaries, many filmmakers and producers argue that it is a necessary tool for effective storytelling. By using carefully crafted soundscapes, they can create a more immersive experience for the viewer, allowing them to better understand and appreciate the natural world.
In conclusion, while not all sounds in nature documentaries are added in post-production, it is common practice to do so. The use of sound editing allows for greater creative control and can enhance the overall experience for the viewer. However, it is important for filmmakers to use sound editing responsibly and avoid creating a misleading portrayal of the natural world.