Does the noise reduction effect of the wireless audio guide device work reliably?

When foreign customers purchase wireless audio guide devices, apart from being concerned about poor anti-interference performance, the biggest worry is the lack of effective noise reduction - in scenic areas, the bustling crowd makes the tour guide's explanations drowned out by the noise; in factory workshops, the loud machinery roars, and the key process introductions are hard to hear clearly; at international exhibitions, the hustle and bustle of people makes cross-language communication difficult. In fact, the noise reduction of the wireless audio guide device is not simply about increasing the volume; it requires "distinguishing between useful explanations and noise", filtering out the unnecessary noise. Yingmi, with 18 years of in-depth industry experience and years of doing foreign trade exports, explains to you what true noise reduction really means through solid technology and global customer cases.

Ⅰ.Is the noise reduction effect reliable? First, distinguish between "true noise reduction" and "false noise reduction"

Many people think that "noise reduction means louder sound", but this is wrong. The so-called "noise reduction" of cheap devices is actually just increasing the volume, which instead amplifies both the noise and the human voices, making it even more irritating to listen to. True noise reduction is precisely the accurate identification of which is useful explanation sound and which is useless noise, only leaving the clear human voices, which is the key.

1. There are two types of noise, and noise reduction needs to "target the right treatment"

The noises encountered by the wireless audio guide device are two types: one is environmental noise, such as the bustling crowd in scenic areas, the loud machinery in factories, and the background music at exhibitions; the other is electronic noise, such as the current sound from mobile phone signal interference and the interference sound from multiple devices being used simultaneously. A good noise reduction solution needs to be able to handle both types of noise at the same time. Yingmi does this.

For example, the high-frequency human voices in scenic areas and the low-frequency vibrations of machinery in factories are completely different in nature and require different treatment methods. Yingmi's products do not need manual adjustment; upon startup, they will automatically adapt to the noise reduction mode according to the scene, whether it is a quiet museum or a noisy workshop, they can precisely handle it. This makes many foreign customers very satisfied.

2.Don't be fooled! These two technologies are true noise reduction

Many products on the market claim "strong noise reduction", but this is actually simple filtering, with no practical use. Truly reliable noise reduction cannot be separated from two core elements: one is a dedicated noise reduction chip, and the other is an optimized algorithm. Yingmi has put a lot of effort into these two aspects, which is also the reason it can export globally.

Hardware-wise, Yingmi's entire series are equipped with SOC dedicated noise reduction chips, which are specifically developed for the explanation scenario, capable of accurately capturing the human voice frequency band and filtering out the noise outside. Software-wise, there is also an independently developed digital filtering algorithm that can automatically adjust the noise reduction intensity according to the noise level - for example, in a quiet exhibition hall, the noise reduction intensity is moderate, retaining the natural environment sounds; in a noisy factory, it automatically increases the intensity to focus on filtering out the machine noise.

3.Yingmi's noise reduction black technology: Every detail of the hardware and software hides ingenious ideas

The noise reduction effect of Yingmi is not supported by a single technology, but comes from the full-chain design from research and development to production. Every step is centered around "clear sound transmission", which is also the reason why it can serve high-end scenarios such as international museum forums and SCO meetings.

Ⅱ.Core technology: SOC noise reduction + digital filtering, dual filtering of noise

The core noise reduction combination of Yingmi is the SOC embedded digital noise reduction chip and digital secondary frequency filtering technology. Simply put, it's like giving the explanation sound "double protection": the first layer, the SOC chip first locks the human voice frequency band (200Hz-3kHz), blocking the low-frequency rumbling of machinery and high-frequency current sounds from the factory; the second layer, the digital filtering algorithm further finely processes the remaining slight noise to ensure that what you hear is only the pure explanation sound. After actual testing, the Yingmi device can filter out over 85% of environmental noise. Even in an 80-decibel noisy environment (roughly the noise level of a busy street), the clarity of the explanation remains above 90%. Take the Yingmi E8 all-in-one explanation device for example. It was used in the SCO conference, and even in a noisy venue, the participants could clearly hear every detail. This is the hard power of technology.

1.Hardware Construction: Reduce noise interference from the source

Apart from the core technology, solid hardware can also help with noise reduction. Yingmi has its own SMT assembly factory with 4 automated production lines, controlling from the chips to the shells. The core chips are selected from high-quality industry models, which can reduce the electromagnetic radiation of the equipment and avoid generating extra electronic noise; the shell is made of environmentally friendly ABS plastic, and an anti-interference layer is added inside, which can block external electromagnetic interference.

For example, the Yingmi R8 headset-style explanation device has a particularly compact body design. The headphone interface is sealed, not only preventing dust and water, but also reducing the infiltration of external noise; the directional microphone on the collar is designed to capture only the speaker's voice, not picking up the surrounding environmental noise. These small details may seem insignificant, but they significantly enhance the noise reduction effect.

III. Real-world Testing of Yingmi's Noise Reduction: How does Yingmi's noise reduction work in real environments?

The noise levels vary in different scenarios, so the effectiveness of noise reduction depends on the actual usage. The following cases are real shots from global customers served by Yingmi, covering scenic spots, factories, museums, and international conferences, with full reference value.

1. Scenic Spot Tour: Filter out the noise of the crowd, and the explanation is clear and distinguishable

Scenic spots are the most challenging places for noise reduction. The noise from crowds, vendors' calls, and broadcast sounds all mix together. The Yingmi R8 headset-style and M7 self-service tour machines performed exceptionally well in 5A scenic spots such as Suzhou Taihu Lake and Jiangxi Longhu Mountain.

The noise from the core attractions can reach around 75 decibels. With the Yingmi R8, the tour guide wears the collar microphone, and the tourists wear the receivers. Even standing in the crowd, they can clearly hear the explanation, and it won't be drowned out by the surrounding noise. A French tour group said after visiting: "In such crowded scenic spots, the explanation in the headphones is still so clear, as if it's being heard in a quiet room." The M7 self-service tour machine, even when tourists are walking around, can accurately receive the explanation signal and is not affected by the surrounding noise.

2.Museums/Exhibitions: Preserve the environmental atmosphere, and the explanation is pure and without noise

Museums and exhibition halls are relatively quiet, but there are slight noises such as air conditioning sounds and footsteps of visitors. Moreover, excessive noise reduction would make them seem "lifeless". The Yingmi C7S self-service tour machine is particularly suitable for such scenarios.

The Guizhou Geological Museum and Zhengzhou Museum both used C7S. Its noise reduction algorithm has been specially optimized, which can filter out low-frequency air conditioning noise and footsteps of visitors, while retaining a little bit of environmental sound, making the explanation listening more immersive. More importantly, the C7S supports NFC touch sensing. In areas with dense exhibits, tourists can simply touch the label to play the explanation, completely unaffected by the surrounding minor noises. A German museum inspection team experienced it and said: "The noise reduction effect is just right. It doesn't affect the listening to the explanation, but it can still feel the atmosphere of the museum."

FAQ

Q1: How much noise can the Yingmi speaker withstand?

A1: The regular models can handle noise within 85 decibels (roughly the noise levels of busy streets or ordinary factory workshops), while the industrial customized models can handle noise above 90 decibels. After noise reduction, the clarity of the audio explanation can still maintain over 90%.

Q2: If multiple teams use the Yingmi equipment simultaneously, will the noise reduction effect be affected?

A2: No! The Yingmi equipment uses the high-frequency band (790-870 MHz) + 4GFSK modulation technology. When multiple teams use it, they just need to switch to different channels, and the channels do not interfere with each other. Moreover, the noise reduction algorithm will specifically filter out intermodulation noise. Even if many devices are working together, the noise reduction effect of each device will not be affected.

Q3: After foreign customers purchase the Yingmi equipment, can it be adapted to the local special noise environment?

A3: Yes! Yingmi has a professional R&D team. You just need to provide the local noise conditions, and they can optimize the noise reduction algorithm specifically. It also supports multilingual voice customization, fully adapting to the usage needs of different countries.

About us

HEFEI HUMANTEK. CO., LTD. has been dedicated to the research and development and production of tour guide devices for 18 years. Our company mainly deals in team tour guide systems, self-service audio guide systems, multi-channel tour guide systems, and intelligent presentation systems. As an innovative enterprise, Yingmi Technology holds multiple core patents and technical certifications, and its strength is highly recognized. The company possesses H4 national patent core technology, a 7S product guarantee system, and a 9G service system throughout the entire life cycle, ensuring zero accidents from the first unit to one million units, all for the reliable delivery of products and services to customers! The company is committed to creating industry-leading intelligent tour guide solutions through a strategy of integrating online and offline as well as domestic and international interaction, and promoting a comprehensive upgrade of cultural and tourism display experiences.