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Impulse response correctionĪ loudspeaker’s impulse response affects clarity, detail, and all spatial aspects of the sound. Dirac Live corrects these in the frequency domain to achieve just the right resolution. However, after addressing consistent time-domain behavior, there may still be some late reverberation in the room that causes subtle coloration. Dirac Live Room Correction automatically finds consistent problems in a frequency-dependent way and corrects for them. Generally, at higher frequencies, there’s less consistent time-domain behavior.

In terms of the impulse response, this means optimization of the direct wave and early reflections. Multiple measurementsĭirac Live uses several measurement positions (typically 9) in the listening room, making it possible to find and correct acoustic problems accurately.

Dirac Live is unique in that it improves the impulse response throughout the listening area, not just in a particular zone. Room-acoustic responses are non-minimum-phase, which is why Dirac Live uses mixed-phase correction. At best, they can minimize problems caused by the application of a filter. Minimum-phase and linear-phase room correction filters can’t physically perfect the acoustic impulse response in a room. Using a look-ahead buffer enables impulse response correction. Dirac’s impulse response correction improves the depth, positioning, and distinction of individual voices and instruments. For example, the stereo image is critically dependent on the time-domain differences and similarities between the sound at the left ear and the right ear. In English In Chinese What is the time domain, and why is it important?Īt Dirac, we believe that the reproduction of transients is critical for a truly natural and transparent sound. White Paper - Room correction and equalization of sound systems Still, they play a vital role in making sure we can enjoy good audio. Phase and timing may be tricky to understand, and interpreting phase plots can be confusing. The list could go on, but the message is clear. On the other hand, ported subwoofers tend to give you much more bass for their size but aren’t as well controlled as a sealed box. They tend to have better phase behavior (basically faster response). Therefore, it’s often recommended to have sealed subwoofers for music listening. Again, the system’s tonal balance doesn’t take into account when a sound is played, only that it’s reproduced somehow.

Your bass is booming all over the place and has no detail at all.

This conflict occurs because everything is spatially The out-of-phase speaker will have the same tonal balance, but the combination of two speakers playing stereo content will have a horrible sound stage.

You’ve connected one of your front speakers out of phase.

The music is the same, and the instruments are the same, so the tonal balance must be the same.

Your system plays all music in reverse.

Here are a few examples, some silly, but revealing nonetheless, as to what tonal balance means, and doesn’t mean, for perceived audio quality: So far, so good, but this isn’t enough to make sure the system sounds good.

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It’s well known how to calculate a filter to restore the balance. Measuring the system supplies the information needed to understand how a specific audio system alters the tonal balance. It does so not only in one sweet spot but over the whole listening area, be it a chair, a sofa, or an auditorium.Īll room correction systems try to even out the amount of energy present in each frequency band, usually referred to as equalization. Based on patented technology, Dirac Live optimizes the sound with respect to frequency and time. Room reflections and misaligned speakers cause sounds to arrive at your ears with different time delays. Still, at Dirac, we realized they only act as advanced equalizers, smoothing the frequency curve but totally missing the timing aspect. Room correction solutions have been around for decades. That’s why it’s been adopted by the world’s leading manufacturers of high-end audio-video equipment and praised by audiophiles and music creators all over the world. It addresses issues that no other product on the market can.

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Dirac Live Room Correction software deals with these challenges in a unique way. No matter how much or how little you’ve invested in your sound system, the room will always impact the sound quality – an all too often overlooked fact. Dirac Live Room Correction Hear your music – not your room

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