QVoice by QSound Labs, Inc

Audio and Voice Solutions

Product Description

QVoice is a unique, feature-rich noise reduction and echo cancellation software solution for mobile phones, hands-free car phone systems and headsets. Offering exceptional natural-sounding speech clarity in noisy environments, QSound's QVoice high performance algorithms deliver the most effective, efficient, leading quality voice solution available on the market today.

QVoice includes adaptive algorithms with fast convergence for bi-directional noise reduction, acoustic echo cancellation and noise-dependent automatic volume control. Designed for single and dual* microphone input and highly optimized for low resource consumption with a small memory footprint, it provides a tunable solution for a variety of devices.

QVoice proprietary technology identifies background noise mixed with the signal and intelligently auto-tunes the noise reduction algorithm to cancel different noise type including: road/traffic/engine noise, environmental/background music/babble noise and wind noise. Subsequently the speech enhancement algorithm compensates for any adverse effects, resulting in clear natural-sounding speech, even when background noise is dominant.

* Calibration required with customer device

The QVoice suite of voice enhancement technology consists of:

* TX / RX noise reduction and speech enhancement
* Acoustic echo cancellation
* Noise-dependent volume control in RX
* Hearing exposure monitoring and alert in A2DP / HSP


Noise-Dependent Auto Volume Control

* adjusts the volume based on ambient noise
* utilises accurate ambient noise estimation
* smooth and natural transition between levels
* intelligent tracking for optimum voice quality
* avoids startle effects - no sudden changes
* maintains previous signal-to-noise ratio (SNR)
* no need to constantly adjust volume buttons

Bi-Directional Noise Reduction

* excellent performance with all noise types
* simultaneous noise reduction in TX and RX
* up to 20dB noise attenuation
* noise identification for optimal tuning
* fast convergence with low delay
* integrated speech enhancement
* works well when in tandem with a 2nd NR

Acoustic Echo Cancellation

* cancel echos coupled from speaker to mic
* fast convergence & deep echo cancellation
* robust double-talk performance
* processes up to 64msec including echo tail
* handles multiple echos within the frame
* full duplex

User Exposure Monitoring and Alert

* continuously monitors acoustic energy through the headset
* calculates accumulative hearing exposure in HSP and A2DP
* configurable loudspeaker setting for precise measurement
* notifies user if pre-defined acoustic energy level is reached
* notification message can be deactivated and reactivated

Optional Music Effects Enhancement Module

* mQFX audio effects for enhanced music

QVoice

Market Segment(s)

• Embedded
• Mobile
• Mobile Computing

Target Platform(s)

• Android
• Linux
• Nucleus
• Other OS
• Symbian
• Windows Embedded CE
• Windows Mobile

ARM Processor(s)

• ARM7EJ-S
• ARM7TDMI
• ARM7TDMI-S
• ARM720T
• ARM920T
• ARM922T
• ARM926EJ-S
• ARM940T
• ARM946E-S
• ARM966E-S
• ARM968E-S
• ARM1020E
• ARM1022E
• ARM1026EJ-S
• ARM1136J-S
• ARM1136JF-S
• ARM1156T2(F)-S
• ARM1176JZ(F)-S
• ARM11 MPCore
• Cortex-A53
• Cortex-A57
• Cortex-A8
• Cortex-A9
• Cortex-M0
• Cortex-M1
• Cortex-M3
• ARMv4
• ARMv5
• ARMv6
• ARMv7
• ARMv8
• StrongARM
• XScale

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