Released on: May 22, 2008, 11:48 pm

Press Release Author: BIGSPEED Computing

Industry: Software

Press Release Summary: VoIP voice engine audio capture, playback, compression, VAD,
echo suppression

Press Release Body: BIGSPEED Voice Compression SDK is a simple, low-complexity,
low-cost voice engine for quick development of VoIP applications. It incorporates
audio recording/playback and voice compression/decompresion in a single COM
automation object, along with some advanced voice processing features.

The used audio format is wideband, 16kHz, 16Kbps, PCM. The compression ratio is
adjustable and can vary from 4:1 to 50:1.

A lot of bandwidth can be addionally saved thanks to the silence compression. A
voice activity detector (VAD) with an adjustable threshold level is used to
distinguish between regions with normal speech activity and those with silence or
background noise.

An optional echo suppression can be employed thanks to the robust double talk
detector. When a double talk situation is detected, the output signal is faded
(half-duplex).

An automatic gain control (AGC) system is implement with a dynamic range 10:1. A
noise reduction is performed on the microphone signal to decrease the white noise.

BIGSPEED Voice Compression SDK utilizes an elegant event-driven paradigm for easy
integration into Windows applications. A special attention is paid to provide
responsive user interface while maintaining low CPU usage. Carefully designed set of
properties, methods, and events offers great flexibility to develop innovative
communication software. Sample applications are included in Visual Basic .NET, and
Delphi 7.

Web Site: http://www.bigspeed.net/index.php?page=bsvoicecompress

Contact Details: submit@bigspeed.net