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Voice Quality Enhancement (VQE) removes echo and noise to enhance speech in numerous voice and audio applications including:
- Voice & Video Conferencing
- Mobile, VoIP & Radio
- Speakerphones & Intercoms
- Speech recognition
VOCAL’s software library is modular and optimized for DSPs and conventional processors from TI, ADI, ARM, Intel and other leading vendors. Our expertise in design, implementation and configuration of mobile, network and telephony solutions will help you bring your voice application to market quickly and efficiently. Contact us to discuss your voice application and platform requirements with our engineering staff.
Voice Quality Enhancement System
An integrated approach for voice quality enhancement is required in telecommunication systems where acoustic echo, background noise, reverberation or other causes significantly degrade the quality of the voice signal. The key to integrating a VQE solution is to put the echo cancellation, dereverberation, noise reduction, voice activity detection, beamforming and other algorithms together in such a way that maximizes speech enhancement for a particular application. The figure shows one possible configuration of VOCAL’s VQE system for enhancing the quality of the speech signal sent from the near end to the far end.
Acoustic Echo Cancellation (AEC)
VOCAL’s Acoustic Echo Cancellers operate on the digitally sampled audio signals of the communication device. Download mac os mojave iso file. Acoustic echo cancellation is an essential part of voice quality enhancement in any form of voice communication.
Line/Network Echo Canceller (LEC/NEC)
Line/Network Echo Cancellers are voice operated devices placed in the 4-wire portion of a circuit to reduce echo for speech enhancement.
Speech Dereverberation
For hands-free or free space communications devices, VOCAL’s Speech Dereverberation software removes the effects of reverberation generated by the acoustic environment for improved speech enhancement and speech recognition.
Acoustic Noise Reduction (ANR)
VOCAL’s Acoustic Noise Reduction software provides voice quality enhancement by adaptively reducing background noise and effectively increasing the signal to noise ratio of the speech signal.
Acoustic Beamforming
When ANR is used with a microphone array, VOCAL’s near field acoustic beamforming algorithms isolate the speaker source to filter out signals originating from different locations and provide noise reduction and interference suppression in the acquired signal.
More Information
- Speech Enhancement Design
- Echo Canceller Design
- Voice Activity Detection
- Comfort Noise Generation
- Packet Loss Concealment
- Blind signal separation
Platforms
VOCAL’s speech software is available for the following platforms. Please contact us for specific Voice Quality Enhancement supported platforms.
ProcessorsOperating Systems- Texas Instruments – C6xx (TMS320C62x, TMS320C64x, TMS320C645x, TMS320C66x, TMS320C67x), DaVinci, OMAP, C5xx (TMS320C54x, TMS320C55x)
- Analog Devices – Blackfin, ADSP-21xx, TigerSHARC, SHARC
- PowerPC, PowerQUICC
- MIPS – MIPS32, MIPS64, MIPS4Kc
- ARM – ARM7, ARM9, ARM9E, ARM10E, ARM11, StrongARM, ARM Cortex-A8/A9, Cortex-M3/M4
- Intel / AMD – x86, x64 (both 32 and 64 bit modes)
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- Linux, uClinux, BSD, Unix
- Microsoft Windows ACM / RTC / CE / Mobile
- Apple iOS / iPhone / iPad & MacOS
- eCOS / eCOSPro
- Google Android
- Green Hills Integrity
- Micrium μCOS
- Symbian
- Wind River VxWorks
- VOCAL LANsEND
520 Lee Entrance, Suite 202
Buffalo, NY 14228
Phone: +1 716-688-4675
Fax: +1 716-639-0713
Email: sales@vocal.com