System information

Dialogic
®
HMP Software Release 3.0WIN Release Guide — December 2010 49
Dialogic Corporation
Programming Libraries
Automatic gain control (AGC)
AGC is an algorithm for normalizing an input signal to a target level. The AGC
algorithm discriminates between voiced and unvoiced signals within a conference.
Active talker
The active talker feature sums the three most active talkers in a conference, so that
the conversation doesn’t get drowned out when too many people talk at once.
Conference monitoring
Participants have listen-only access to a conference.
Echo cancellation
This feature reduces echo from the incoming signal, improving the quality of a
conference for all participants.
Tariff tone
A party can receive a periodic tone for the duration of the conference call.
6.3 Dialogic
®
Continuous Speech Processing (CSP) API
Library
The Dialogic
®
Continuous Speech Processing (CSP) API Library supports development
of host-based automatic speech recognition (ASR) applications. CSP provides many
features such as high-performance echo cancellation, voice energy detection, barge-in,
voice event signaling, pre-speech buffering, and full-duplex operation.
The Dialogic
®
CSP software includes library functions, device drivers, firmware, and
demonstration programs.
Dialogic
®
CSP API Functions Not Supported by Dialogic
®
HMP
Software
The following Dialogic
®
CSP API functions are not supported by Dialogic
®
HMP Software
Release 3.0WIN:
• ec_rearm()
Refer to the Dialogic
®
Continuous Speech Processing API Programming Guide and
Dialogic
®
Continuous Speech Processing API Library Reference for more information.