Binaural

Template:Infobox sound Binaural refers to sound that is recorded using two microphones, arranged with the intent to create a 3D stereo sound sensation for the listener, as if they were in the room with the performers or instruments. This technique is often used in ASMR, virtual reality, and psychoacoustics.

History

The concept of binaural recording dates back to the late 19th century. Early experiments in binaural sound were conducted by Clement Ader in 1881, who used a pair of telephone receivers to create a stereo effect. The term "binaural" itself comes from the Latin words "bi" (meaning two) and "auris" (meaning ear).

Technology

Binaural recording typically involves the use of a dummy head with microphones placed inside the ears. This setup mimics the way human ears perceive sound, capturing the nuances of direction and distance. The recorded sound is then played back through headphones, which preserves the spatial characteristics of the original recording.

Microphones

The microphones used in binaural recording are often omnidirectional, capturing sound from all directions. They are placed at the same distance apart as human ears, usually around 18 cm. This setup helps in creating a realistic 3D audio effect.

Playback

For the best experience, binaural recordings should be listened to using headphones. This ensures that each ear receives the sound intended for it, preserving the spatial cues that create the 3D effect.

Applications

Binaural sound is used in various fields, including:

• ASMR: Autonomous Sensory Meridian Response videos often use binaural recording to enhance the tingling sensation experienced by viewers.
• Virtual reality: Binaural audio helps create an immersive experience by providing realistic soundscapes.
• Psychoacoustics: Researchers use binaural recordings to study how humans perceive sound.
• Music production: Some artists and producers use binaural techniques to create unique listening experiences.

Advantages and Disadvantages

Advantages

• **Realism**: Binaural recordings provide a highly realistic listening experience.
• **Immersion**: The 3D sound effect enhances the sense of being present in the recorded environment.

Disadvantages

• **Playback limitations**: The full effect of binaural recordings can only be experienced with headphones.
• **Complexity**: Setting up binaural recording equipment can be more complex and expensive than traditional stereo recording.

Related Pages

• ASMR
• Virtual reality
• Psychoacoustics
• Dummy head
• Omnidirectional microphone

Binaural Resources
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