Sony NWZ-X1061FBSMP Operation Guide - Page 110
Using Noise Canceling Function, About Noise Canceling
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Table of Contents Index 110 Using Noise Canceling Function About Noise Canceling The internal microphone embedded in the headphones picks up the ambient noise. The player generates an antiphase sound wave against the ambient noise to reduce it. The Noise Canceling function can reduce the unwanted ambient noise especially in a vehicle such as an airplane, train, bus, etc., allowing you to enjoy music at a low volume. 1 The waveform of the ambient noise (original sound). The internal microphone embedded in the headphones picks up the ambient noise. Then, the Noise Canceling circuit analyzes the waveform of the noise. 2 The antiphase waveform against the noise. The player generates the antiphase waveform against the noise to cancel it out. 3 The composite waveform. Two waveforms have canceled each other out. The original waveform and antiphase waveform combine to cancel each other out, reducing the ambient noise. Notes If the supplied headphones are not used properly, the effect of the Noise Canceling function may be degraded. To make the most of the function, use the correct size earbuds to fit your ears and insert the headphones into your ears snugly. The Noise Canceling function mainly reduces the ambient noise in the low frequency bands and has no effect against the ambient noise in the high frequency bands. It has no effect on some sounds. Do not cover the microphone part of the headphones with your hands, etc., otherwise the Noise Canceling function may not work. Microphone You may hear a slight noise when the Noise Canceling function is active. This is operational noise of the Noise Canceling function and not a malfunction. Continued