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Automatic Gain Control (AGC) Software

This automatic gain control software consists of two parts: voice activity detection and gain control. It boasts wide dynamic range, low data and program memory requirements and selectable depth and envelop of the gain control. It consists of two user-callable functions, AGCinit and AGC. This AGC software adaptively controls the dynamic range of a speech signal without amplifying the noise between words and phrases. It effectively reduces the volume if the signal is strong and raises it when it is weaker. The AGC software is implemented in assembly or C. In addition, it integrates easily with MP3, MPEG, TCP/IP and most popular real-time operating system.

This AGC software belongs to GAO’s family of Telephony Software. This line includes a wide variety of telephony modules such as Dual Tone Multi-Frequency (DTMF) 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, Acoustic Echo Cancellation Software (AEC) and MF R1/R2 software. GAO provides a complete package for telephony that includes speech compression modules and telephony modules. The software packages can be used for feature phones, Internet phones, multi-channel computer telephony boards, soft PBXs and Voice over IP.

About GAO Research Inc.
GAO Research Inc. ( is a recognized international leading provider of communications software to telecom and electronics companies and provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

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