G.167 Acoustic Echo Cancellation Software
04/29/2013

The software is used to eliminate one of the biggest problems with hands-free speaker phones: acoustical echoes.

Online PR News – 29-April-2013 – Toronto/Ontario – Toronto, Canada - GAO Research Inc. (www.GAOResearch.com) is offering its G.167 acoustic echo cancellation software fully compliant with ITU-T G.167 standard. The software is used to eliminate one of the biggest problems with hands-free speaker phones: acoustical echoes.

GAO's G.167 Acoustic Echo Cancellation Software features robust double-talk detection, user-callable functions, high signal to noise ratio and automatic gain control. It provides high performance full duplex operation and its reliable design delivers consistent results. The memory and MIPS requirements of an acoustical echo canceller depend on the maximum duration of all possible echoes. The longer the duration of an echo the more MIPS and memory required to resolve the problem. Echo with duration of 80 ms may be generated by a room with 4 meters by 4 meters of hard wall. This software is implemented in assembly or C.

This acoustic echo cancellation software belongs to GAO's family of Telephony Software. This line provides a complete package for telephony that includes speech compression modules and telephony modules. Featured products in this line include Call Progress Software which is a tonal signaling standard that is used to acquire connections between subscribers in telephone network systems and to indicate the status of the incoming and outgoing phone calls, Dual Tone Multi-Frequency Software which is widely used in interactive control applications such as telephone banking, electronic mail systems, and many other menu-driven operations that respond to digits entered from a telephone and Automatic Gain Control Software which adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases.

About GAO Research Inc.
GAO Research Inc. (www.GAOResearch.com) is a world-renowned provider of high quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors.