Feedforward indoor active noise reduction system
An active noise reduction and feedforward technology, applied in the field of noise noise reduction, can solve problems such as increasing the risk of heart disease and reducing life expectancy, and achieves the effect of easy popularization and simple system.
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Embodiment 1
[0020] combine figure 1 , a schematic diagram of a specific circuit structure of the present invention, a feed-forward indoor active noise reduction system, including a sound receiving module, a sound processing module, an inverting noise reduction circuit, an emitter follower, and a bone conduction vibrator, the sound receiving module and the sound processing module , emitter follower, and bone conduction vibrator are electrically connected in sequence, and the sound processing module converts the sound collected by the sound receiving module into an analog electrical signal and outputs it to the bone conduction vibrator through normal phase amplification, emitter follower, and reverse amplification. The bone conduction vibrator causes the glass to vibrate in the opposite phase to the sound wave, thereby suppressing the vibration of the glass and reducing the noise.
[0021] specific:
[0022] The sound receiving module and the sound processing module can be used as a microp...
Embodiment 2
[0026] combine figure 1 , a schematic diagram of a specific circuit structure of the present invention, a feed-forward indoor active noise reduction system, including a sound receiving module, a sound processing module, an inverting noise reduction circuit, an emitter follower, and a bone conduction vibrator, the sound receiving module and the sound processing module , emitter follower, and bone conduction vibrator are electrically connected in sequence, and the sound processing module converts the sound collected by the sound receiving module into an analog electrical signal and outputs it to the bone conduction vibrator through normal phase amplification, emitter follower, and reverse amplification. The bone conduction vibrator causes the glass to vibrate in the opposite phase to the sound wave, thereby suppressing the vibration of the glass and reducing the noise.
[0027] specific:
[0028] The sound receiving module and the sound processing module can be used as a microp...
Embodiment 3
[0033] combine figure 1 , a schematic diagram of a specific circuit structure of the present invention, a feed-forward indoor active noise reduction system, including a sound receiving module, a sound processing module, an inverting noise reduction circuit, an emitter follower, and a bone conduction vibrator, the sound receiving module and the sound processing module , emitter follower, and bone conduction vibrator are electrically connected in sequence, and the sound processing module converts the sound collected by the sound receiving module into an analog electrical signal and outputs it to the bone conduction vibrator through normal phase amplification, emitter follower, and reverse amplification. The bone conduction vibrator causes the glass to vibrate in the opposite phase to the sound wave, thereby suppressing the vibration of the glass and reducing the noise.
[0034] specific:
[0035] The sound receiving module and the sound processing module can be used as a microp...
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