Stereo-to-3D enhancement, as provided by QSound Labs QXpander™, creates a more realistic and thus more enjoyable listening experience from existing source material by increasing the width, immersiveness—and thus realism—of the perceived audio image.

-unparalleled high-quality,
-multi-channel surround
-virtualization  

About QXpanderÒ

Proprietary QXpander 3D spatial processing literally adds new dimension

To music playback, enlarging the sound stage beyond the physical limitations of speaker locations, and expanding the acoustic image outside the listener’s head when listening with headphones.  This results in a more natural, enjoyable and less fatiguing listening experience.

QXpander employs purpose-specific algorithms for maximum spatial impact on headphones or speakers.  Speaker-targeted 3D processing is optimized for narrow speaker geometries and can be OEM-tuned for peak performance on front, rear, and side-firing speaker configurations.

Based on the Qsound’s positional 3D audio algorithms used in professional music and video production, the QXpander process is carefully designed to maintain the integrity of the original stereo mix.  Qxpander widens the original sound stage proportionately, leaving center elements strong and introducing a minimum of undesireable spectral coloration

Qxpander’s patented, stereo sound field expansion algorithm accepts any ordinary stereo signal and produces an output signal with dramatically widened stereo imaging and enhanced realism.  The addition of QSound’s proprietary mono-to-stereo conversion algorithm produces a stunning synthesized 3D soundfield from mono content.

Stereo Enhancement

In ordinary stereo systems, the stereo image is formed between the left and right speakers, and is confined by the speaker positions (i.e. the “sound stage” is located between the two speakers).  QXpander is designed to form the stereo image beyond the speakers, thus enlarging the “sound stage”.

If the center channel is defined as the monaural or common component of the left and right channels, then Figure 1 to the right presents the spatial response of the QXpander versus the normal image width of stereo in bypass mode..