audio enhancement ICs The QSound Competitive Edge
  • Proven track record and
     established brand
     recognition
  • Cost effective - few external
     components needed
  • 2 to 2; 5.1 to 2; and 2 to
     5.1 options available
  • Simple control interfaces

QS7777 / QS7779 / QS7785

 

Analog Audio Processors

 

 

QSound’s family of audio enhancement ICs deliver a variety of analog processor solutions for OEM consumer electronic devices without a programmable DSP. QSound’s sonic technologies, algorithms and special effects include 3D audio, multi-speaker system surround synthesis, virtual surround, and 3D sound stage expansion.

 

As a global supplier of audio software technology, QSound algorithms are delivered for a wide range of devices and applications including stereos, televisions, speakers, home theater, computers, video games, headphones, Bluetooth headsets and other consumer electronics.

 

QSound’s proprietary audio algorithms truly deliver a fuller, more natural and immersive audio experience - users hear the difference!!

 

 

Component Summary

 

 

IC Description Applications
     
QS7777CF QS7777PF QSurround® 3D Virtual Audio Processor
for Multi-Channel Surround
TVs, Home Theater, Speakers, Car Stereos
     
QS7779CM QS7779PM QSurround® Matrix Surround Decoder/Virtualizer Home Theater, Speakers, Car Stereos
     
QS7785CF QS7785PF QSurround® Multi-Speaker System TVs, Home Theater, Speakers, Car Stereos
     
QX2020 Stereo Enhancement Processor
Spatial/Widened Stereo Image
TVs, Home Theater, Speakers, Stereos, Video Games, Computers
     

 

 

Feature Description

 

 

QS7777

QSurround® 3D Virtual Audio Processor for Multi-Channel Surround

The QS7777 is a 3D audio processor IC using QSound’s patented QSurround® technology for multi-channel surround. This chip processes decoded Dolby Digital (AC-3), Dolby Surround or other multi-channel formats and produces virtualized 3D sound for two speaker systems. In addition, various combinations of virtualization and sound field enhancement are employed to provide 3, 4 and 5 speaker systems with maximum spatial rendering effectiveness.

 

Features:

 

  • Enhanced playback with two enhancement levels and improved separation and better surround 3D
  • Virtualize surround speakers for flexible speaker systems: - Audio signals will be processed to 5, 4, 3 and 2 speaker systems for Dolby Digital (AC-3)
     - Audio signals will be processed to 4, 3 and 2 speaker systems for DolbySurround (Pro Logic)
  • Monaural to stereo conversion for Pro Logic surround signal
  • Satisisfies certification requirements of Dolby Laboratories Licensing Corporation
  • Parallel and serial digital interface for mode control:
     - QS7777CF for I2C 2-pin serial control interface
     - QS7777PF for 3-pin serial control interface (Data, Clock and Strobe)
  • DC 5 to 13 volt supply & 48-pin QFP packaging

 

 

 

QS7779

QSurround® Matrix Surround Decoder/Virtualizer

The QS7779 is an audio processor IC that implements a decoder for a stereo matrix encoded source material such as Dolby Surround, along with surround virtualization using QSurround® technology developed by QSound Labs. This chip also produces an enhanced stereo sound field for a stereo input signal. If the input signal contains matrix encoded surround sound, the chip automatically decodes it and produces virtualized surround sounds for two-speaker playback.

 

Features:

 

  • Dolby Surround decoder capability
  • Stereo sound enhancement
  • Center channel output option
  • Two enhancement levels
  • Parallel and serial digital interface for mode control:
     - QS7779CM for I2C 2-pin serial control interface (Data, Clock)
     - S7779PM for 3-pin serial control interface (Data, Clock and Strobe)
  • DC 5 to 13 volt supply
  • 24-pin SSOP packaging

 

 

 

QS7785

QSurround® Multi-Speaker System

The QS7785 is a 3D audio processor that creates 5 speaker surround sound from 2 channel stereo source using QSound’s proprietary QSurround® technology. This chip synthesizes and outputs surround sounds from 2 channel stereo signal for surround speakers as well as an enhanced stereo sound for front speakers.

 

Features:

  • 3D synthesized surround sound for left & right surround speakers
  • 3D stereo sound enhancement for left & right front speakers
  • Center speaker output
  • Parallel and serial digital interface for mode control:
     - QS7785CF for I2C 2-pin serial control interface
     - QS7785PF for 3-pin serial control interface (Data, Clock and Strobe)
  • DC 5 to 13 volt supply & 48-pin QFP packaging

 

 

 

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.

 

For detailed technical information and implementation data please contact a QSound representative or email us at info@qsound.com.

 

 

 

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