GAO Research Unveils Call Progress Software with Two User-Callable Functions
July 27, 2012
By Rajani Baburajan
GAO Research, a provider of telecommunications software solutions, announced it is offering Call Progress software with two user-callable functions designed to perform the direction, generation, and initialization operations.
The Call Progress (CP) software belongs to GAO’s family of Telephony Software. It provides full call progress tone detection and generation functionality and operates on PCM samples. Since the CP software is implemented in assembly and C, it features low data and program memory requirements and can be easily configured to different cadences and tones.
GAO Research provides telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors. The software package can be used for feature phones, Internet phones multi-channel computer telephony boards, soft PBXs and Voice over IP.
Call Progress (CP) software features Dual Tone Multi-Frequency (DTMF) Software which is an international signaling standard for touch-tone telephones. Another feature, Acoustic Echo Cancellation Software, addresses one of the biggest problems with hands-free speaker phones: acoustical echoes. Meanwhile the Automatic Gain Control (AGC) Software controls the dynamic range of a speech signal without amplifying the noise between words and phrases.
When it comes to sound quality on digital products one of the biggest problems is filtering out the sounds that you want from the noise that you do not want to hear. This bad sound, known as noise by audio professionals, can be filtered out, but the process is usually a time consuming one that requires the help of a sound professional in order to be done correctly.
To address this, earlier in May GAO Research announced it has developed an algorithm designed to help suppress both stationary and non-stationary background noise from human speech, sounds like cars driving by, the waiter dropping a glass or the conversations of others a short distance away.
Edited by Juliana Kenny