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
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
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
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
MACH-5 : Feed-forward ANC Performance
ANC performance [dB]
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
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
- Supports HF without Voice MIC
- Good communication under
noise environment with strong
noise suppressor and ANC
MACH-5 : ANC + Music Enhancer
■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
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
・latency： 4ms(NS=OFF), 5.3ms(NS=ON)
・Stereo Hearing aid processing
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