Bose QC 20 PERGUNTAS E RESPOSTAS

Procurar online ou descarregar pdf PERGUNTAS E RESPOSTAS para Auscultadores Bose QC 20. Bose QC 20 15 páginas. Acoustic noise cancelling headphones

Bose

FREQUENTLY ASKED QUESTIONS

PRODUCT TECHNOLOGY

What is Acoustic Noise Cancelling

headphone technology?

For internal and reseller distribution only – Bose confidential.

Acoustic Noise Cancelling

20i

Acoustic Noise Cancelling

FPO

Acoustic Noise Cancelling

reducing unwanted noise by electronically creating a signal that is the

mirror image of the unwanted noise. Microphones in the earbuds monitor

sound at the user's ear. The monitored sound (music and noise) is

compared to the sound the user wants to hear (the signal coming from

the audio input – this could be music or silence). The difference between

the monitored sound (from the earbud's microphones) and the sound the

user wants to hear (music or silence) is noise. The system electronics

instantly process the noise signal, and a precise equal and opposite signal

(correction signal) is created. This opposite signal is then sent to the

speaker in the earbud along with the sound the user wants to hear

(again, this could be music or silence). The result is three signals being

presented to the user's ear:

1. Noise (monitored by the earbud microphones) from the environment.

2. The sound the user wants to hear (music or silence) from the audio

input.

3. The correction signal from the system electronics.

The noise and correction signal cancel each other (1 + -1 = 0), providing

a clean, high-fidelity sound signal at the ear.

headphones

headphones.

headphone technology is a method of

CC011967_NRT Nautilus QA R3 3