1. The distance between the actor and the microphone The distance between the microphone and the performer can be categorized into three main types: close, medium, and long range. Each type is suitable for different vocal styles and provides a unique audio character. 1) Close-range pickup: The microphone is placed 1–5 cm from the mouth, ideal for low-pitched voices or pop singers. This technique is particularly effective for bass tone moderators, as it captures a strong sense of realism and intimacy. Since the sound is almost entirely direct, it results in a clean and clear audio signal. Equalization (EQ) recommendations for speech: - Attenuate 3–6 dB between 100Hz–200Hz to reduce the proximity effect. - Boost 3–6 dB between 200Hz–300Hz, which is the core frequency range for speech. - Enhance 3–6 dB at 1–2kHz to add brightness and clarity. - Reduce 3dB above 8kHz to minimize high-frequency noise, as speech has fewer high overtones compared to singing. Without effects, the host’s voice sounds natural and intimate. 2) Medium-range pickup: The microphone is positioned 5–10 cm away from the sound source, commonly used for traditional singing. For example, the host’s microphone is placed about 5 cm from the mouth, while national singers are typically 5–10 cm away. This distance allows for a relaxed, lively, and refreshing vocal tone, which can energize the atmosphere in a karaoke setting. National songs require clear articulation, proper resonance, and a bright, pure tone that reflects ethnic characteristics. EQ settings for this range: - No boost or cut at 100Hz, as there's no proximity effect. - Boost 3–6 dB between 256Hz–440Hz to enhance warmth. - Add 3dB at 1–3kHz for better clarity. - Increase 3dB at 10kHz to improve the expressiveness and resolution of the sound. 3) Long-range pickup: The microphone is placed 10–20 cm away from the sound source, often used for Bel Canto singing. This style features beautiful vocal tones that result from specialized training, leading to rich harmonics and a full timbre. To capture these nuances, the audio system must have a wide frequency response to ensure all overtones—low, mid, and high—are transmitted smoothly. EQ adjustments for long-distance recording: - Boost 3–6 dB at LF (low frequencies). - Increase 3–6 dB between 256Hz–315Hz. - Enhance 3–6 dB at 1–2kHz. - Add 3–6 dB at 10kHz to maintain clarity and depth. 2. Microphone angle (1) Close-range pickup (for pop singing): The microphone should be angled between 15°–30° from the mouth to avoid low-frequency "popping" or "buzzing." (2) Medium-range pickup (for national and Bel Canto): The distance is 5–20 cm, with an angle of around 15°, ensuring balanced sound capture. (3) Long-range pickup: When the microphone is more than 10–20 cm away, it often captures multiple sound sources, such as a vocal line and a string section. In this case, the microphone’s axis should be aligned directly with the sound source, meaning the angle is 0°, to maximize clarity and definition.
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Breathing Simulator and Heart beating device
Heart Beating Mechanism,Pulsing Device,Breathing Simulator,Heartbeat Simulating Mechanism
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