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ALC5642R-VF-CG 数据表(PDF) 59 Page - Realtek Semiconductor Corp. |
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ALC5642R-VF-CG 数据表(HTML) 59 Page - Realtek Semiconductor Corp. |
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59 / 156 page  ALC5642-VF Datasheet Multi-Channel Audio Hub/CODEC with embedded Voice DSP and SounzReal TM Digital Sound Effect 47 Rev. 0.93 7.19. Voice DSP Function The embedded voice DSP is a low power and high performance voice processor. It provides Acoustic Echo Cancellation (AEC), Beam Forming, Far Field Pick-Up (FFP), Noise Suppression (NS) and Voice Recognition (VR). Acoustic Echo Cancellation: The voice DSP suppresses echo effectively under all occasions, and the performance of which could be easily optimized for different types of acoustics set-up and applications ranging from mobile phones to tablet computers. Not only during periods of far-end single-talk are the echo returns completely absent on the upstream signal, the AEC performs robustly under prolonged double talk periods and provides full-duplex conversations without any cut-off, drop-out, howling, voice level pumpings, and annoying echoes. Noise Suppression: The voice DSP incorporates state-of-the-art digital signal processing technology that reduces both stationary noise and non-stationary noises. Stationary noise reduction is applied on both downstream and upstream signals and is highly effectively against hums, fan-noises, tones, and other pseudo-stationary noises. Stationary noise reduction is applicable in both 1-microphone and 2-microphone systems. For the upstream signal, any user system that deploys a 2-microphone signal front-end input could take advantage of the voice DSP 2-microphone non-stationary noise suppression and further improve the user experience by removing café noise, interfering background music and conversations, and other directional interference sounds. Far-Field Pickup: The far-field voice pick up technology that combines intelligent gain and signal dynamics control with sophisticated noise reduction to allow varying levels of microphone voice input to appear steady and stay at a comfortable range for the far-end listener. This feature allows user systems to perform end-to-end conferencing or voice-recording with the near-end talker speaking at varying distances within a 5 meters radius area from the microphone without any echoes, fade-outs, or severe intelligibility losses. |
类似零件编号 - ALC5642R-VF-CG |
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类似说明 - ALC5642R-VF-CG |
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