High-Quality Sound Unique To Digital - Sony MDR-NC500D Operating Instructions Manual

5. High-Quality
Sound
Unique
to
Digital
MDR-NC500D digitized the NC circuit and used the digital equalizer in the playback
system.
The acoustical system of noise canceling headphones is generally based on the design,
which emphasizes low frequency in order to maximize the effect with limited electric power.
Moreover, in the case of the noise canceling headphones of feedback type, in principle
their music signal is impacted by the canceling function, so that the quality of the reproduced
sound is also impacted.
To solve these problems, an equalizer circuit is prepared in the audio input side.
The digital equalizer mounted in MDR-NC500D blocks the impact on the sound quality
and also brings about high-quality sound to maximize the intrinsic performance of the driver
unit.
By generously providing the digital equalizing technology accumulated with Sony's AV
amplifiers and Hi-Fi audiovisual apparatus and using the newly developed computation
method optimized to the system, it was made possible to reproduce a music source with a
sense of realism from deep bass to silky highs.
Characteristic of
acoustical system
Characteristic of
digital equalizer
Total
characteristic
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Desired
characteristic
Frequency Frequency
Frequency