directional microphone

Thân thiện

A wildlife researcher uses a directional microphone to record bird calls in the forest.

Definition

Noun: A microphone that is designed to receive sound from a particular direction. It is engineered to be more sensitive to sounds coming from a specific area or point while reducing or rejecting sounds from other directions.

Usage

A directional microphone is used in situations where it is necessary to isolate a specific sound source from background noise. This makes it essential for professional audio recording, broadcasting, journalism, film production, and certain types of live performances or public speaking.

Examples

• The journalist used a directional microphone to capture the speaker's voice clearly amidst the crowd noise.
• For recording the bird's song, a highly sensitive directional microphone was pointed towards the tree.
• In film sets, boom operators use directional microphones to pick up actors' dialogue without capturing unwanted ambient sound.

Advanced Usage

• Technical Operation: The directionality, or polar pattern (e.g., cardioid, supercardioid, shotgun), describes the specific shape of the area from which the microphone picks up sound most effectively.
• Acoustic Context: The effectiveness of a directional microphone can be influenced by the acoustic environment, such as reflections in a small room.

Variants and Related Words

• Shotgun Microphone: A common type of highly directional microphone, often with a long, tubular design, used extensively in film and television.
• Cardioid Microphone: A microphone with a heart-shaped pickup pattern that is sensitive to sound from the front and sides but rejects sound from the rear.
• Lavalier Microphone / Lapel Microphone: A small microphone that is typically omnidirectional, worn on clothing. It is related as a contrasting type; it is highly directional.

Synonyms

• Unidirectional Microphone: A technical synonym emphasizing sensitivity in one primary direction.
• Cardioid Microphone (when referring to that specific polar pattern).

Antonyms

• Omnidirectional Microphone: A microphone designed to pick up sound equally from all directions.
• Non-directional Microphone: A less common term for an omnidirectional microphone.

Học thuật

Noun

1. a microphone that is designed to receive sound from a particular direction