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.