Post two tablets quiet and whole room, micro technology launched indoor silent noise reduction equipment

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Put Whisper on the wall if you have nowhere to hide the noise

Nowhere is noise in life No, even in the house, you may be disturbed by various outdoor noises. When the window is open, you can also reduce the noise by closing the window, but if the windows are closed, how to eliminate the noise? All that is left is to plug the ears. However,Micro Sound TechnologyWant to give the public a new choice in this situation, that is, theyWhisper the Noise Canceler is crowdfunding on Kickstarter indoor Noise reduction equipment.

Whisper the Noise Canceler looks like two flat plates, When in use, it is fixed on both sides of the glass or wall, one is outdoors and the other is indoors. The outdoor unit collects outdoor noise and transmits it to the indoor unit through Bluetooth. The indoor unit is based on active noise reduction technology and emits sound waves that are opposite to the noise. Cancel the noise entering the room.

Whisper has wide operating frequency in noise reduction and has feedback adjustment function. Whisper can reduce noise in the frequency domain of 200-14000Hz, which is wider than most active noise reduction devices. The founder, Mr. Meng, told 36Kr that the consumer-grade active noise reduction headphones with the highest nominal specifications on the market can achieve 4KHz noise reduction. When the frequency is higher, it will be limited by the chip and circuit frequency. Whisper passed them The unique algorithm realizes the work in the high frequency band. The Whisper indoor unit also has three error detection microphones, which compare the noise reduction results with preset thresholds and give feedback to the error. By adjusting the output amplitude and frequency phase, the final noise reduction effect can be adjusted.

Whisper can also work on solar energy. The Whisper outdoor unit is equipped with solar panels, which can use solar energy as a power source and wirelessly charge the indoor unit. In the case of sufficient sunlight, the two machines can continue to work normally by relying on solar energy. When it is not powered by solar power, the battery that Whisper comes with can probably support two days and one night operation. In addition to solar energy, Whisper can also be charged via a USB cable.

The specific noise reduction effect, from the video on Kickstarter, the Whisper is installed on both sides of a door. When the door is open, the indoor volume is 66-72 decibels, and when the door is closed and the Whisper is not opened, the indoor volume is reduced to 54-60 decibels , After turning on Whisper, the indoor volume is around 40 decibels.

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60 square meters. When fixing, the inside of the plate can be fixed on both sides of the glass with suction cups, or fixed on both sides of the wall by nails, etc. Micro-acoustic Technology said that the suction cups used can be kept for a very long time without strong external force, and can be fastened for a long time. , It will not loosen as a vacuum suction cup due to imperfect sealing. When the thickness of the wall is large, the internal and external devices cannot charge each other and transmit data via Bluetooth. However, the noise reduction function can still be used normally when the indoor unit and the outdoor unit are connected with a USB cable.

Weisheng Technology has a company in China and New Zealand. At present, the team has only three full-time employees and has been using its own funds for product research and development. Whisper is currently crowdfunding hundreds of new coins on Kickstarter, which is a bit expensive. Microsound Technology stated that it mainly wants to pass the crowdfunding test under the market acceptance and adjust the product according to the situation. In the future, they also plan to crowdfund again on Indiegogo, when product features and prices may be adjusted.

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