The Live-End, Dead-End approach 443 sounds become readily recognisable in a wide variety of different listening conditions. `Monitoring', however, is not consistently possible in many such environments as these artefacts may conceal aspects of the programme or modify them in ways that make objectivity impossible. This again is why there should be no early reflexions ­ even of a controlled and diffuse nature ­ in a monitoring room. In contrast, this is quite acceptable in a listening room if it makes the listening experience more enjoyable. 17.4 Summary The object of the design approach is to provide a neutral monitoring environment. The principal difference to the Non-Environment approach is in the definition of how neutral `neutral' should be. The first design objective is to create a reflexion-free zone (RFZ) around the monitors and the listener(s). The rear half of the room is designed to be diffusively reflective in such a way that the overall room response has an even decay rate at all frequencies of interest. This is usually achieved by the installation of proprietary diffusers based on specific mathematical sequences. See also Section 4.7. Room modes should be minimised as far as practicably possible. The technique is also said to be beneficial in providing a better musical ambience for musicians to work in. This is considered to be important now