Bluetooth module singlechip Voice module Hardware development

         Features and application sites of remote upgrade video and voice chip

With the rapid development of smart home system and Internet of things technology, many smart home products have been released, such as humanized electronic doorbell, smart water cup, wechat message, etc., which can record a few sounds as a reminder and transmit audio to the device according to Bluetooth mobile phone. The Internet of things seems to be an irresistible new trend. Remote upgrading of video and voice based on the dynamic characteristics of WiFi, mobile phone Bluetooth, 4G and other wireless networks is a technical desire under the wave of Internet of things technology.

Remote upgrade of video and voice chip solution can be applied in:

① Dynamic voice advertising of parking lot (dynamic advertising and announcement video of parking lot, dynamic upgrade of advertising promotion video voice document and announcement information content are managed according to the connection background);

② Smart home products (for the elderly and other special group applications, remote can be sent to local devices for storage according to voice chat, and can be upgraded anytime and anywhere according to different requirements);

③ Advertising and publicity of shopping malls display cabinets (chain franchise stores) (reminder devices with remote upgrade voice function can be installed in stores or shelves in several regions, and customers can manage the advertising words of reminder devices remotely and uniformly according to different requirements in the background management);

④ Sharing mobile power, bicycles and other shared products (the manufacturer / agent can manage the background and upgrade the video and voice to the shared devices remotely)

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The audio control module is a fully intelligent audio transmission data, audio, MP3 audio play video products, is a cost-effective remote upgrade video and voice plan, with high processing speed, small size, power consumption, smooth transmission and other characteristics. Flash is embedded in the audio control module of the chip. 4G Internet or WiFi Internet can be used to send the required video and voice content to the MCU. The MCU sends the content to the chip according to the UART communication mode to carry out remote replacement of flash video and voice content. In the whole process of upgrading the video voice content, the free download speed of UART reaches 51kb /S。

Audio chip control module features:

It can use 4G or WiFi to exchange video and voice content remotely according to UART communication, and the communication speed of UART can reach 51kb / s.

Audio transcoding software supports 16 bit surround sound DAC and 2 secure channel 16 bit ADC

Excellent performance surround sound, ADC has 90dB frequency stability

Three sets of intelligent 32-bit system timer, support capture and PWM mode

Spi-flash is a fixed sound source area, which can be replaced by U disk.

The standard configuration is 32mflash, and the flash is larger than 128M. It supports fat system files and MP3 file format video and voice.

The USB interface completes the automatic conversion of the server (usbhid), slave (usbsd reader) and the function of USB external sound card.

Support UART serial communication control mode, ad function key control mode.

Support the function of U disk offline upgrade process.

Support customized special functions: function key control mode, touch control mode, etc.