Binaural recordings are a form of stereophonic recording method that replicates how human ears perceive sound, these types of recordings create a 3D aural image around the listener and are extremely immersive when well recorded and listened to appropriately with headphones. It has wide applications in video, podcast, and gaming formats -- allowing the listener to feel like they are there. Although binaural formats are seldom used for music applications, they have also been utilized in music ranging from Rock, Jazz, Acoustic, and Classical. In this paper, we will investigate the acoustical phenomenon that produces the binaural effect in audio recordings -- including the ITD (Inter-aural time difference), the ILD (inter-aural level difference), IPD (inter-aural phase difference) as well as the monaural spectral difference that occurs between two ears so we can better understand the replication of human hearing in binaural recordings. Binaural recordings differ from regular stereophonic recordings as they are arranged in a specific way to account for HRTF (Head-related transfer function). The most common method of binaural recordings is with two high-quality omni-directional microphones affixed on a dummy head where the ears are located, although other methods exist without the use of a full dummy head.

翻译：双耳录音是一种立体声录音方法，它复制了人类耳朵感知声音的方式。这类录音能在听者周围营造出三维听觉空间，当录制得当并正确使用耳机聆听时，能带来极强的沉浸感。该技术广泛应用于视频、播客和游戏格式中，使听者仿佛身临其境。尽管双耳格式很少用于音乐领域，但它也被应用于从摇滚、爵士、原声到古典等多种音乐类型中。在本文中，我们将研究音频录音中产生双耳效应的声学现象——包括耳间时间差（ITD）、耳间电平差（ILD）、耳间相位差（IPD）以及双耳之间发生的单耳频谱差异，以便更好地理解双耳录音如何复制人类听觉。双耳录音与常规立体声录音不同，因为它以特定方式布置以考虑头相关传输函数（HRTF）。最常见的双耳录音方法是使用两个高质量全向麦克风固定在一个人造头模的耳朵位置，尽管也存在其他不依赖完整头模的方法。