An audio feedback system that iteratively uses a room as a sound filter can be an artistic medium generating fascinating sounds. In this system, the room is not the only component acting as a filter. The sound system component, i.e. the speaker and microphone, also can have a sizeable impact on the sound in each iteration. To make sure the relative influence of the room on the sound is revealed and not masked by the audio system, the author proposes using a common calibration method at the end of each iteration. The mathematical model of the system is used to explain the reasoning behind the use of this method. Following this procedure, the author conducted an experiment that shows sound interaction with the room over time being captured in the artwork.

中文翻译：

---

减少音频反馈系统中不完美的麦克风和扬声器的影响

一个反复使用房间作为声音过滤器的音频反馈系统可以是一种产生迷人声音的艺术媒介。在这个系统中，房间并不是唯一充当过滤器的组件。音响系统组件，即扬声器和麦克风，也会对每次迭代中的声音产生相当大的影响。为确保房间对声音的相对影响被揭示而不是被音频系统掩盖，作者建议在每次迭代结束时使用通用校准方法。该系统的数学模型用于解释使用该方法背后的推理。按照这个程序，作者进行了一项实验，展示了艺术作品中随时间推移与房间的声音交互。