Conexant Systems has introduced a new line of audio SoC solutions for embedded audio and voice applications. The CX2070X SoC targets growing audio applications such as multimedia IP phones, personal navigation devices, portable media players and mobile internet devices. Other applications include MP3 player dock systems, PC speaker systems, audio headsets, and unified communications systems that support services such as VoIP phones, phone speakers, and audio conferencing capabilities. The highly integrated SoC can also be used to implement walkie-talkies and intercom doorbell applications. The new audio solution is now available in volume to pre-production customers.
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René Hartner, vice president of marketing at Conexant Systems, said: "We have leveraged our extensive expertise in speech and audio enhancement algorithms to introduce a new generation of on-chip speaker products that extend our reach to growing embedded audio and voice. These innovative solutions use a range of powerful technology innovations developed by Conexant to dramatically improve audio and voice quality and user experience. In addition, easy-to-use software configuration tools help developers customize audio systems and optimize listening experiences. ."
The highly integrated CX2070X SoC includes an integrated audio/voice digital signal processor (DSP), multi-bit codec, digital and analog input/output interfaces, and 2.5 W per channel for stereo speakers or optional A post-width modulated (PWM) Class D amplifier, as well as a differential line output for an external speaker system amplifier. Its key features include Conexant's proprietary technology innovations that significantly improve audio and video quality. These include:
• Sub-band echo cancellation: The high-performance sub-band echo cancellation algorithm eliminates speaker-to-microphone feedback while maintaining the natural effects of high-quality, echo-free voice calls.
• Beamforming: Processes the signals captured by the array microphone to form an adjustable directional beam that improves speech intelligibility by eliminating interfering sounds and background noise. Beamforming can be used to limit the microphone pickup radius of a private conversation, or to capture a 360-degree radius of a voice telephony application.
• End-to-end noise reduction: Two unique dynamic noise reduction filters for input and output audio streams eliminate ambient near-end and far-end noise.
• Line Echo Cancellation: An advanced line echo cancellation filter eliminates twisted pair cross-echo from a full-duplex two-wire hybrid network.
• BrightSoundTM: Rich parametric equalization, dynamic range compression, and digital crossover algorithms to optimize speaker frequency response, no clipping for improved acoustics, and match channel configuration speakers up to 2.5 W.
• 3D Phantom Speaker: The Psychoacoustic Stereo Extension algorithm changes the listener's perception by widening the output from narrow, separate speakers, creating a sound experience that is closer to the scene.
• 3D Virtual Immersion: The Phase Virtual Algorithm re-orientates the sound field psychoacoustically to create an immersive surround effect. It can also be adjusted to create a headphone experience that focuses sound on a particular audience without increasing the actual volume.
The CX2070X on-chip speaker (SPoC) is available now in a variety of configurations. The new solution can also be used with the company's CX92735 Imaging SoC to help manufacturers add audio capabilities to "connected" frames and interactive display devices.
Additional features include easy-to-use, pre-configured tools and software to help product developers evaluate or develop audio subsystems that do not require a PC or microprocessor control unit.
Conexant's audio solutions include HD audio ICs, HD audio codecs, and PCs, PC peripheral sound systems, audio subsystems, speakers, laptop docking systems, VoIP speakers, walkie-talkies, intercom doorbells and On-chip speaker solution for audio-enabled surveillance applications.
Packaging and Pricing The CX2070X product family is available in a 76-pin quad flat no-lead package. When purchasing 10,000 pieces in batches, the unit price ranges from 2.25 yuan to 3.75 yuan depending on the product function settings.
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