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    2. 歡迎光臨!1kic網專注于為電子元器件行業提供免費及更實惠的芯片ic交易網站。
      YAMAHA主動降噪耳機解決方案(YMU831)
      來源:青山新材 | 作者:中華ic網整理 | 發表于:2016-05-20
      關鍵詞:雅馬哈,耳機方案,助聽器芯片,YAMAHA,YMU831方案,耳機主動降噪方案,什么是主動降噪 簡介:雅馬哈耳機主動降噪方案:耳機搭載YUM831降噪芯片,實現ANC(Active Noise Cancellation)功能,無需Voice MIC,就能實現HF通話,還可將此作為助聽器使用(Hearing Aid)
      關鍵詞:雅馬哈,耳機方案,助聽器芯片,YAMAHA,YMU831方案,耳機主動降噪方案,什么是主動降噪
      簡介:雅馬哈耳機主動降噪方案:耳機搭載YUM831降噪芯片,實現ANC(Active Noise Cancellation)功能,無需Voice MIC,就能實現HF通話,還可將此作為助聽器使用(Hearing Aid)



      最新一代雅馬哈耳機主動降噪方案:耳機搭載YUM831降噪芯片,實現ANC(Active Noise Cancellation)功能,開啟安靜完美的聽覺之旅。

      主動降噪功能特點:

      1、媲美市場主流的耳機主動降噪效果(ANC)
      2、無需Voice MIC,就能實現HF通話
      3、強大的噪聲抑制和ANC效果并用,對在嘈雜環境下通話十分有效

      此外,還可將此作為助聽器使用(Hearing Aid)
      作為助聽器的功能特點:

      1、將手機作為日常用的助聽器使用
      2、日常會話助聽、看電視助聽

      blob.png

      雅馬哈耳機主動降噪方案:耳機搭載YUM831降噪芯片



      Active Noise Cancel –Head Phone Solution

      耳機主動降噪方案



      Yamaha Active Noise Cancel “ANC” Solution Feature

      YAMAHA主動降噪解決方案的特點


      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:數字技術耳機主動降噪系統


      2-chip solution

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

         CPU : Only for initialization of DSP

         High performance CPU is unnecessary



      耳機主動降噪系統YMU831

      ANC-HP System


      MACH-5 : ANC-HP

      MACH-5 : 主動降噪-耳機

      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 : 信號流


      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

      能耗測試



      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 助聽器

      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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