From Interface Microphones to Two-Way Networked Audio: The Evolution of Wireless Teaching Amplification Technology——How 2.4G Digital Wireless Amplification Rose to Sweep Global Classrooms

Teaching amplification is the foundational infrastructure of smart education and also a "protective umbrella" for teachers' vocal health. This article systematically reviews the decades-long technological evolution of the teaching amplification industry: from wired desktop boundary microphones and portable amplifiers ("Little Bees") to analog wireless amplification (VHF/UHF) and infrared amplification, and then to the 2.4G digital wireless amplification pioneered by Guangbiao Technology—leveraging advantages such as license-free frequency bands, GFSK digital modulation, automatic frequency pairing at startup, and zero crosstalk across multiple classrooms, 2.4G digital wireless amplification has risen rapidly and swept through classrooms in more than 50 countries worldwide; now, Guangbiao Technology is further promoting a new model of "two-way networked audio + local wireless amplification," deeply integrating local wireless classroom amplification with campus networked audio, opening the next stop of intelligent, networked wireless teaching amplification. This article is also a panoramic industry reference for understanding the development of wireless teaching amplification technology, the selection of teaching amplification systems, and future industry trends.Keywords: teaching amplification, wireless teaching amplification, 2.4G digital wireless amplification, infrared amplification, analog wireless amplification, boundary microphone, portable amplifier, two-way network audio, local wireless amplification, smart classroom

Spring Festival inbound travel orders have astonishingly surged by 203%! Smart tourism showcases China's charm to foreign friends.

As the chimes of the 2025 Spring Festival gradually ring out, the enthusiasm of China's New Year tourism market blossoms as brilliantly as festive fireworks. According to the "2025 Spring Festival Tourism Market Forecast Report" released by Ctrip, inbound travel orders during the Spring Festival period surged by an astonishing 203% year-on-year! This figure not only signals the recovery of China's tourism market but also serves as powerful proof of global travelers' recognition of China's profound culture and magnificent scenery.

To comprehensively advance the construction of a resilient and safe city, the application of intelligent technologies is key.

Cities are important places for social production and daily life, carrying multiple functions such as economy, politics, culture, and society. During his inspection in Shanghai, General Secretary Xi emphasized: “Comprehensively advance the construction of resilient and safe cities.”

1 Eleven departments jointly issued a notice: “Digital+” gives new vitality to the cultural and tourism industry

A series of policies have accelerated the integration of digital technology into the cultural tourism industry. It is evident that the organic integration of digital technology will become an important direction for promoting the high-quality development of the cultural tourism industry in the current and future period.

Technology empowers innovation, innovation drives development, and smart tourism accelerates its growth.

Head north to Harbin to see the snow and enjoy an ice and snow feast; go west to the ancient city of Xi'an for delicious food and a wide variety of tasty treats; head east to Shanghai to visit Disneyland and play with the animals of Zootopia; go south to Jiangxi to experience Hakka culture and heal your soul amidst the colorful scenery...

AI Cloud Computing Leads Smart Education | Guanzhao Technology's Digital Technology Promotes Campus Construction

The scenarios of digital education are becoming increasingly diverse, and artificial intelligence is gathering new momentum for educational development.

Accelerate the construction of an education powerhouse: open up new tracks for educational development through digitalization

Looking to the future, vigorously advancing the digitalization of education requires continuously optimizing the top-level design of education, conducting systematic planning and overall layout from a national strategic height, continuously improving the institutional settings and development ecology that are compatible with digital education, comprehensively promoting the transformation of educational and teaching models, and striving to forge a path of digital education development with Chinese characteristics.

Mid-Autumn Festival and National Day see a surge in cultural and tourism demand! The Ministry of Culture and Tourism actively cultivates new spaces for immersive smart tourism experiences.

During this year's Mid-Autumn Festival and National Day holidays, the number of domestic tourist trips reached 826 million, and domestic tourism revenue reached 753.43 billion yuan.

A specimen at a museum in Chengdu was broken off, sparking debate: historical civilization should be visited with civility.

Recently, at the Life Mystery Museum in Chengdu, Sichuan, a man broke the rib of a marlin specimen. A staff member of the museum stated that the museum has decided not to repair the specimen with the broken rib, but instead to turn it into an exhibition spot for "civilized viewing education", hoping to appeal to visitors to view exhibits in a civilized manner and take care of them.

Focusing on Education Transformation and Data Governance: 2023 Global Smart Education Conference Held in Beijing

Recently, the 2023 Global Smart Education Conference, themed "Education Transformation and Data Governance," was held in Beijing.