Audience develops multi-sensor computing technology

Inspired by the human brain to receive and process stimuli, audio processor manufacturer Audience has developed a neuroscience-based multi-sensor computing technology that simulates human hearing processing in microchips and enhances natural voice usage. Experience and achieve Always-On voice and motion sensing.

Audience is a company that commercializes auditory neuroscience. Its main technology focuses on analyzing how the human brain processes signals and introduces them into advanced DSP audio chip solutions. BartDeCanne, vice president of marketing for Audience, said that since the launch of the first product at the end of 2008, more than 220 mobile devices in the market have adopted Audience's voice processor, with more than 400 million shipments.

When analyzing various sensory inputs, Audience begins with hearing and explains how the human ear receives signals and how the brain analyzes and processes them. BartDeCanne said, "The human brain is very powerful in this area. For example, in a gathering, when ten people are talking at the same time, you can selectively hear only one of them."

In addition to handling hearing, the human brain can also handle a variety of sensory sensations such as motion sensing and vision. Audience simulates the human neural system to receive information from multiple senses and make appropriate actions and responses. The latest multi-sensor processor engine eS700 series and ultra-low-power action processor MQ100 are developed. It is expected that these will be adopted in the second half of this year. The product of the processor is on the market. The AudienceeS700 multi-sensor family includes 702, 703, 704, 705, 752 and 754 with advanced voice, Always-On VoiceQ and MotionQ, and intelligent audio codecs.

VoiceQ is a low-power, continuous speech-sensing technology that provides wake-free, uninterrupted speech detection and instruction with a single keyword. The continuously operating VoiceQ is always aware of the situation, allowing the device to listen to the surrounding environment and react to pre-set voice commands. Mobile devices are also woken up only when needed, and can reduce false positives to reduce power consumption, resulting in ultra-low power uninterrupted speech detection with <1.5mA current loss.

The key to VoiceQ's differentiation is the ability to provide vocal recognition without being erroneously activated by background noise. In addition, multi-user authentication can be implemented through keyword pre-programming, so that different users of the shared device can replace the PIN code input by the keyboard by voice login.

Advanced voice technology allows mobile devices to be placed in any pocket, even in their pockets, to maintain good voice quality; to suppress algorithms through advanced noise (wind cut), even in windy environments and extremes Under the harsh and noisy conditions, you can clearly make and receive calls, greatly improving the experience of the mobile phone.

The eS700 series supports two PA modes - directional and 360-degree voice. The directional mode provides the best results for the best position of the mobile device; the 360-degree voice is optimal for any angle and is suitable for conference calls on the table and on the cup holder.

The Audience intelligent audio codec eS75X achieves the best SNR and analog performance. It has all the necessary ADC/DACs to meet the needs of the industry for speaker, headset, in-ear headphones and other drive units. Line output for optimal performance with AP. In addition, automatic speech recognition (ASR) assisted algorithms reduce noise and preserve speech.

MotionQ technology supports non-stop detection of context-aware applications such as security monitoring, indoor navigation and gesture recognition, while consuming less than 5mW of power, significantly lower than other motion processor architectures.

In addition, Audience has introduced the ultra-low-power MQ100 motion-sensing processor, an action processor designed to manage and integrate information from various sensors in the terminal device. In order to ensure uninterrupted detection of the terminal device, the current action processing requires continuous communication between the sensor and the AP, so that the power consumption is as high as 60-200 mW, but BartDeCanne emphasizes that the high power-efficient MQ100 consumes less than 5 mW, and It is smaller than any sensor hub MCU to achieve low cost.

Audience recently announced a partnership with MediaTek to provide the eS700 series of intelligent audio codecs with advanced voice capabilities for its latest MT6592 eight-core processor with the MT6290LTE baseband processor. BartDeCanne said: "The pre-integrated and tested audio codec full-featured audio subsystem through Audience meets the needs of MediaTek customers for different audio function options, helping them reduce R&D operations and optimize audio processing."

Based on Computational Auditory Scene Analysis (CASA) technology, Audience's multi-sensor computing processor implements enhanced voice communication and noise suppression for mobile devices.

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