Telephony software is used to place calls, monitor a call’s progress and detect incoming calls on POTS (plain old telephone service) lines. In digital telephony, where call control is directed by other means, DTMF dialing
VoIP Effects on Data Modem Communications What is sample slip? Sample slip is an adverse effect on the audio streams in Voice over IP (VoIP) networks. It is caused by the presence of clock skew
Xamarin.iOS includes classes for CallKit that work similar to the CallKit framework in XCode. Apple CallKit is an API that lets applications implement the same user interface for calling that other iOS phone apps use.
Rotating arrays for wideband beamforming are a potential solution to the frequency variant beamwidth problem. The ideal spacing of sensors for beamforming is half the wavelength of the target frequency. In acoustics, the signal of
PESQ (Perceptual Evaluation of Speech Quality) is an objective test measure established by the ITU-T P.862. The PESQ attempts to estimate the mean opinion score (MOS) of a given audio signal. True MOS are obtained
The Session Initiation Protocol (SIP) is a signaling protocol that specifies the syntax and transfer procedures of messages that are meant to establish sessions. It is usually used to establish media sessions (audio and/or video)
VOCAL’s IP Intercom software is a combination of VOCAL’s VoIP and Voice Quality Enhancement solutions into one seamless package for hands-free full duplex IP communication applications. Features VoIP stack with Adaptive Jitter Buffer Secure Communications
Building applications for iOS is always done using XCode. The XCode application comes with a number of tools that are used at various stages of the development process. One of those tools is a native
ITU G.719 Software Low-complexity fullband (48kHz sampling) audio codec Configurable data rates (32-128kbps) Optimized for DSPs, RiSC, CISC processors ITU G.719 compliant VOCAL offers the G.719 codec software as a standalone algorithm, as part of
For multi-channel full-duplex audio applications, there is more than one way to design the acoustic echo cancellation (AEC) software. In this case study, we are limiting the discussion to the multi-channel scenario where there are
VOCAL Technologies, Ltd.
520 Lee Entrance, Suite 202
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Phone: +1 716-688-4675
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