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    1. 欢迎光临!1kic网专注于为电子元器件行业提供免费及更实惠的芯片ic交易网站。
      YAMAHA主动降噪耳机解决方案(YMU831)
      来源:青山新材 | 作者:中华ic网整理 | 发表于:2016-05-20
      关键词:雅马哈,耳机方案,助听器芯片,YAMAHA,YMU831方案,耳机主动降噪方案,什么是主动降噪 简介:雅马哈耳机主动降噪方案:耳机搭载YUM831降噪芯片,实现ANC(Active Noise Cancellation)功能,无需Voice MIC,就能实现HF通话,还可将此作为助听器使用(Hearing Aid)
      关键词:雅马哈,耳机方案,助听器芯片,YAMAHA,YMU831方案,耳机主动降噪方案,什么是主动降噪
      简介:雅马哈耳机主动降噪方案:耳机搭载YUM831降噪芯片,实现ANC(Active Noise Cancellation)功能,无需Voice MIC,就能实现HF通话,还可将此作为助听器使用(Hearing Aid)



      最新一代雅马哈耳机主动降噪方案:耳机搭载YUM831降噪芯片,实现ANC(Active Noise Cancellation)功能,开启安静完美的听觉之旅。

      主动降噪功能特点:

      1、媲美市场主流的耳机主动降噪效果(ANC)
      2、无需Voice MIC,就能实现HF通话
      3、强大的噪声抑制和ANC效果并用,对在嘈杂环境下通话十分有效

      此外,还可将此作为助听器使用(Hearing Aid)
      作为助听器的功能特点:

      1、将手机作为日常用的助听器使用
      2、日常会话助听、看电视助听

      blob.png

      雅马哈耳机主动降噪方案:耳机搭载YUM831降噪芯片



      Active Noise Cancel –Head Phone Solution

      耳机主动降噪方案



      Yamaha Active Noise Cancel “ANC” Solution Feature

      YAMAHA主动降噪解决方案的特点


      ANC using digital-processing

      Better sound quality comparing Analog type HP

      Connecting by USB Type-C Interface

      Easy mode setting by Android Application


      Yamaha Voice and Music Enhancer

      Better Hands free talking by Beam Forming, Noise Suppressor, Echo Cancel

      Yamaha Audio Effect for Music and Movie contents

      Hands Free and Audio Effect tuning by Yamaha Sound Engineer


      Co-work with ODM

      ODM maker already developed ANC HP with Yamaha Solution

      Speedy product release to market using ODM



      MACH-5 : Digital ANC-HP System with MACH-5

      MACH-5:数字技术耳机主动降噪系统


      2-chip solution

      MACH-5 : Low-latency DSP with MIC-Amp/HP-Amp

         CPU : Only for initialization of DSP

         High performance CPU is unnecessary



      耳机主动降噪系统YMU831

      ANC-HP System


      MACH-5 : ANC-HP

      MACH-5 : 主动降噪-耳机

      Active Noise Cancellation for HP using digital-processing

      Feed-forward type ANC

      Hybrid (FF&FB) type ANC

      blob.png


      blob.png



      ANC : Signal flow

      ANC : 信号流


      FF-ANC and Hybrid(FF&FB)-ANC

      FF IRR, FB IIR and Music IIR are designed by ANC filter design software

      Calibration gains are used for compensation in production line

      User gains are controlled by headphone/earphone users

      YMU831方案,深圳代理商




      MACH-5 : Feed-forward ANC Performance


      blob.png

      ANC performance [dB]



      Parameter set ANC

      parameter set ANC performance (data 370)



      MACH-5 : ANC @ Power consumption

      Playback

            HP : SONY MDR-NC31EM

      MIC

            Analog-MIC : SONY MDR-NC31EM (bias = 2.0V)

      ANC

            Algorithm : Feed-forward ANC @ 192kHz

      blob.png

      能耗测试



      MACH-5 : ANC Voice Enhancer (HandsFree)

      Good HF(HandsFree) effect with BF(Beam Forming) using the

      same microphone for ANC.

      Receiver

      Suppress environmental noise with ANC

      Emphasize voice linked to environmental noise

      with BVE(Bright Voice Engine)

      Transmitter

      No additional Voice Mic with ANC-MIC

      Better Noise Suppression: Suppress unexpected sound with BF

      Better Echo Cancel : Echo cancel corresponding to Type1


      blob.png

      - Supports HF without Voice MIC

      - Good communication under

         noise environment with strong

         noise suppressor and ANC



      MACH-5 : ANC Music Enhancer


      blob.png■F-DSP/AudioEngine

          ■AEQ : PhaseCorrection

          ■252 : Surround

      ■B-DSP/AudioEngine

          ■WIDE : Stereo Expander

          ■HXT : 2-band Harmonics Enhancer

          ■EQ3 : 3-band PEQ

          ■DRC3 : 3-band DRC

          ■DRC : Single-band DRC

          ■Tone Generator


      ANC Music Enhancer




      MACH-5 : ANC Hearing AidHearing Aid (Headphone)

      MACH-5 : ANC 助听器

      Using ANC HP for sound collector

      Hearing aids for speech and TV

      blob.png

      ?latency: 4ms(NS=OFF), 5.3ms(NS=ON)

      ?Stereo Hearing aid processing




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