Sony NWZ-A844 User Manual

ModelName: Falcon_E

PartNumber: 4-164-613-11

The internal microphone embedded in the headphones picks up ambient noise. 

The player generates an antiphase sound wave against the ambient noise to 

reduce it. The Noise Canceling function can reduce unwanted ambient noise 

especially in a vehicle such as an airplane, train, bus, etc., allowing you to enjoy 

music at a low volume.

 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.

 Rubbing noises may occur while wearing headphones. It is not a malfunction.

 The Noise Canceling function mainly reduces the ambient noise in the low frequency 

bands and has less effect on ambient noise in the higher frequency bands, such as 

speaking voices and ringing tones. It has no effect on certain sounds.

 Do not cover the microphone part of the headphones with your hands, etc., otherwise 

the Noise Canceling function may not work.



Microphone

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 ambient noise.