Natural
A transparency descriptor in audio assessment.
Sounds reproduced with high fidelity. Acoustic instruments, voices and sounds that sound like they do in reality. The sound is similar to the listener's expectation to the original sound without any timbral or spatial coloration or distortion: "Nothing added – nothing missing". The soundstage is clear in space and brings you close to the perceived original sound experience.
Scale applied in listening tests: A little – A lot
[Reference: Report ITU-R BS.2399-0]