Typical acoustic problems with hands-free voice calls with smartphones.Īcoustic echo is caused by acoustic coupling between the loudspeaker and microphone, both of which are built into smartphones.
![acoustic echo cancellation for voip acoustic echo cancellation for voip](https://www.koontech.com/UploadFiles/20190404/ip-door-phone-left-view.jpg)
Typical problems are acoustic echo, noise, and unbalanced sound levels ( Fig. When we make a voice call by using a VoIP application on a smartphone, some acoustic problems may disturb our communication with the other party. Problems with audio processing on VoIP applications for smartphones
Acoustic echo cancellation for voip software#
These three functions have internal parameters that can be automatically calibrated depending on the property of each smartphone model, which means that VoIP applications with our software can support most smartphone models. The following three functions are included in the software. Software that can be implemented on VoIP applications. We developed auto-calibrating echo canceller Therefore, the speech quality of a VoIP application may sometimes degrade, especially during hands-free calls. In contrast, it is difficult to provide a VoIP application with such well-tuned audio processing functions since the application must be able to run on any model.
![acoustic echo cancellation for voip acoustic echo cancellation for voip](https://www.adaptivedigital.com/wp-content/uploads/2018/03/ec-block-dia.png)
The audio processing functions for the embedded voice call function can be well tuned to the property of each target smartphone model. However, to provide good speech quality, the different audio properties of the various types of existing smartphones must be taken into consideration. When making a voice call using a smartphone, some users may sometimes choose a voice over Internet protocol (VoIP) application instead of the default voice call function embedded in the smartphone. As smartphones become more widespread, communication is becoming more flexible than that achieved with ordinary fixed or mobile phones or personal computers.