Amazon Chime SDK now supports Amazon Voice Focus noise reduction for phone calls

The Amazon Chime SDK lets developers add real-time audio, video, screen-sharing, and messaging capabilities to their web or mobile applications. Amazon Voice Focus uses artificial intelligence to help reduce background noises such as fans, lawnmowers, and barking dogs. Starting today, developers can use Amazon Voice Focus with Amazon Chime SDK Public Switched Telephone Network (PSTN) audio applications to help reduce unwanted noise on PSTN audio calls. Builders can use this feature for customer service conversations to help improve caller experience. Amazon Voice Focus integration works for calls to or from the public telephone network or calls with on-premises telephone equipment using the Session Initiation Protocol (SIP). The feature can be turned on and off using an API. Builders can choose to permanently enable noise reduction on a call or provide it as an option to end users, similarly to the mute/unmute feature. Amazon Voice Focus for Amazon Chime SDK is available in US-East (N. Virginia) and US-West (Oregon) AWS regions, with usage-based pricing. To get started with the Amazon Voice Focus feature, please refer to the [documentation](https://docs.aws.amazon.com/chime/latest/dg/voice-focus.html), [pricing information](/chime/chime-sdk/pricing/), and [blog post](https://aws.amazon.com/blogs/business-productivity/background-noise-suppression-on-the-pstn-using-the-amazon-chime-sdk/) with [sample code on Github](https://github.com/aws-samples/amazon-chime-sdk-pstn-audio-voice-focus).