Atmel CorporaTIon, a touch and microcontroller solution manufacturer, and Bang & Olufsen ICEpower (a subsidiary of Bang & Olufsen), a professional manufacturer of D-level audio solutions, announced the joint launch of end-to-end for high-quality audio playback End audio platform. The result of this collaboration is the introduction of a first-class audio reference design that combines the Atmel AVR UC3 32-bit microcontroller and Bang & Olufsen ICEpower ’s MobileSound 3 (all-digital, low-power monolithic stereo Class D speaker) Amplifier, headphone amplifier and audio digital signal processor). Users can use this reference design to access digital audio media, use Atmel UC3A3 32-bit microcontrollers to decompress music files, and use MobileSound 3 devices to convert data into professional-quality audio. This jointly developed audio platform has a small form factor and low power consumption, and is suitable for mobile audio devices such as headsets, mobile phones and accessories, tablets and laptops. Moreover, the output of MobileSound 3 can be connected to a second high-power amplifier stage (such as ICEpower 50ASX2), ensuring that USB PC speakers, media player docking stations, and speakers connected to Bluetooth and WiFi devices have ultra-high audio quality. Mads Emil Solgaard, technical marketing manager of Bang & Olufsen ICEpower, said: "We are very pleased to work with Atmel to integrate high-quality amplifier functionality into its popular 32-bit AVR audio platform. As the digital audio market continues to evolve, developers High-quality and easy-to-run reference designs are needed to shorten time to market. " The complete digital audio playback platform allows users to access digital audio files from USB host devices such as SD cards, USB mass storage devices, or computers. The reference design kit is easy to expand, connects to the media player docking port and Bluetooth or WiFi devices, and can compress audio files using the most popular compression algorithms such as ACC, MP3, or WMA. Atmel's software framework has the characteristics of the device and USB host device protocol, with USB audio level device support and USB mass storage file software, which can be directly inserted into user applications. The Atmel AVR UC3 32-bit microcontroller can run at 1.5 DMIPS / MHz, retrieve audio files and decompress them, send the data to the MobileSound 3 amplifier, and play it on speakers or headphones. The speaker output is 2 x 1.5W, with less than 0.01% total harmonic distortion and a signal-to-noise ratio higher than 100dB. The efficiency of the amplifier reaches 92%, and it can include a built-in digital signal processing engine in a 3.0 x 2.6mm package. The engine can realize SmartBass adaptive dynamic bass enhancement, SmartEQ flexibility, full-parameter 5-band equalizer, SmartDRC advanced parameter multi-level compression Limiter / limiter system, and digital volume control, all of these algorithms can be adjusted using the MobileSound3 Audio Suite software tool from Bang & Olufsen ICEpower. Geir Kjosavik, senior product marketing manager at Atmel, said: "Cooperating with a leading manufacturer of analog audio processing technology such as Bang & Olufsen ICEpower is the key to the development of a complete digital audio playback platform. Through cooperative development, low power consumption and small Dimensions and ultra-high audio quality for speakers of all specifications. "
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