stereo enhancement for Bluetooth
The QSound
Competitive Edge- Top quality digital audio
enhancement algorithms
for stereo headphones,
speakers & docking stations - Industry’s best performance:
- Lowest memory and MIPS
- Ultra low system overhead
- Minimal effect on headset
playback times
- Tunable for all narrow
geometry speaker
configurations - Proven track record and
established brand recognition
QSound® Bluetooth®
for Mobile Phones and Media Players
In today’s fast-paced consumer environment, wireless means flexibility, freedom and mobility – no cables, no clutter, no hassles. Whether wired or not, consumers expect excellent performance and quality. QSound delivers exactly that – top quality Bluetooth wireless capability. QSound’s leading stereo sound stage expansion, surpasses Bluetooth consumer expectations with an impressive audio experience.
QSound Bluetooth® Audio is a compact, high-performance digital audio processing software solution drawn from QSound Labs’ ground-breaking 3D spatial algorithms. This technology represents the culmination of over 20 years of PC host and DSP audio software development and product deployment by QSound Labs, Inc., a world leader in sonic innovation.
Feature Description
The QSound Bluetooth audio suite enhances the Bluetooth audio experience with
• QXpander® natural sounding, less fatiguing 3D sound stage expansion for earphones/speakers.
• QSizzle™ active mid/high frequency spectral enhancement.
• QRumble™ active low frequency spectral enhancement.
• QEQ™ static multi-band equalization with presets.
• QLimiter™anti-saturation dynamic range control.
QXpander®
QSound’s proprietary QXpander 3D spatial processing literally adds new dimensions to music playback, expanding the sound stage beyond the physical limitations of speaker locations, and enlarging the acoustic image outside the listener’s head when using headphones. This results in a more natural-sounding, 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.
QSizzle™
An adaptive mid to high-frequency spectral enhancement, selectively adding upper spectrum energy according to the real time characteristics of the input signal. QSizzle restores a natural sounding sonic punch to highly compressed
audio formats like MP3 resulting in lively, sparkling highs without the harsh side-effects of simple frequency boosters.
QRumble™
The low-frequency counterpart to QSizzle, QRumble also adds energy
selectively, bringing substance and warmth to the low end of the spectrum without overloading on loud passages.
QEQ™
Multi-band equalization for custom shaping frequency response with 17
different presets including Classical, Jazz, Rock and Pop.
QLimiter™
A high-efficiency, anti-saturation dynamic range controller, QLimiter handles
any combination of signals and extreme effects settings. Eliminates output distortion with surprisingly little CPU bandwidth use, ensuring consistent
high-quality playback.
Proven Technology and Implementation Experience
QSound Labs’ audio software is well known as one of the wireless industry’s highest quality, most compact and efficient solutions for enriching the users’ audio experience. Since its inception in 1988, QSound Labs, Inc. has established itself as one of the world’s leading audio technology companies. QSound’s expertise was born out of its roots in pro-audio recording of numerous artists, television shows and movies such as Madonna, Sting, Pink Floyd, X-Files, Wonder Years, Robin Hood Prince of Thieves and many more.
Today, QSound Labs is well known and highly regarded for its proprietary audio solutions that include virtual surround sound, positional audio and stereo enhancement for the mobile devices, consumer electronics, PC/multimedia and Internet markets. Companies using QSound technology are listed in our Partners section.
Technical Specifications and Implementation Data
Audio solutions by QSound Labs have been rigorously optimized with the participation of major industry partners focusing on three critical requirements: quality, processing performance and memory footprint.
You can expect at least 25 to 50 percent savings on MIPS and memory footprint when compared to competing solutions. For detailed technical information and implementation data please contact a QSound representative or email us at info@qsound.com.
Single-Chip Bluetooth® MP3 Player with QSound®
BlueCoreT Player is an MP3 Player reference design developed by CSR, based on the latest Bluetooth technology. The BlueCore MP3 Player integrates QSound's QXpander® and QEQT audio enhancement effects with Bluetooth on a single chip, allowing high-quality audio to be streamed wirelessly to Bluetooth stereo headphones for maximum listening pleasure.
Measuring just 56mm by 37mm, BlueCore Player offers a low cost, low power integrated audio Bluetooth solution for MP3 players, DAB radios, hi-fi systems and more. It can stream music over Bluetooth for over 18 hours from an 800mAh Li ion battery.
CSR's digital audio player solution is the industry's leading Bluetooth solution developed specifically to enable OEMs to get to market quickly and easily with the latest wireless technology.
For more information about BlueCore Player, please visit the CSR website.

