Pioneer SC-82 User's Guide download pdf (Page 4)

Introduction MCACC MCACC ProAdvanced MCACC Feature Comparison Technical DetailsThe Essence of MCACC

MCACC Reference Guide

The Essence of MCACC

Pioneer is dedicated to making your home theater experience as

close as possible to what the sound creators and studio

engineers intended when they created the original sound tracks.

Developed through a rigorous pursuit of the ideal multi-channel

audio reproduction, the MCACC technology focuses on three main

features—phase characteristic, measurement precision, and

reproduction frequency—which sets it apart from other similar

technologies.

Phase Characteristic

When audio signals are out of phase, cancelling out of sound

occurs between speaker units and channels, and the original

sound cannot be reproduced. Pioneer’s MCACC can make

adjustments without altering the phase characteristics, thereby

allowing original sound reproduction just as the creator

intended.

More details on page 12

Measurement Precision

In a normal living room environment, the reverberation

characteristic is inconsistent due to various interior materials

and furniture placement. So the optimum sound quality cannot

be achieved if the EQ is based on measurement data that

includes reverberant sound. The measurement for Pioneer’s

MCACC takes the time-axis into account and applies different

compensation methods according to the influence of the

reverberant sound, enabling optimal compensation for the

listening environment.

More details on page 13

Reproduction Frequency

When EQ adjustment is applied to high-resolution audio

sources, the sound quality cannot be maintained if the

reproduction frequency is reduced from the original 192 kHz or

96 kHz level. Pioneer’s MCACC makes EQ adjustment without

changing the audio file’s reproduction frequency, allowing

playback of true high-resolution sound in a multi-channel setup.

In Phase

Out of Phase

Main Channel

LFE Channel

(From subwoofer)

Main Channel

LFE Channel

(From subwoofer)

Perceived

synthetic sound

(in green)

Perceived

synthetic sound

(in black)

Free from cancellation

Powerful and accurate bass

Cancellation occurs

between main and LFE channels

Matching phase

Phase shift

Related Bass Output from Two Speakers

An Example of the Phase Problem

1 2 3 4 5 6 7 8 9 ... 16 17

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Pioneer SC-82 User's Guide Page 4

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