Need Local microphone audio stream for transcription in React Native

We want to develop live close caption feature in our application.
Currently we developed with react-native-live-audio-stream. but there is an issue with echo voice takes mic to transcription.
If we get a new event in observer with audio stream then that would be an amazing feature with much abundunt application

simple technical references with stream included in the code of package
[https://github.com/xiqi/react-native-live-audio-stream](url)
Stream should sent in base64 format which can handle in javascript side.
Currently we follows this documentation.
[https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-transcribe-streaming/](url)

We stucks on this over two months 😔
Any helps must be apperciated

Thank you

Start by reviewing the react-native-live-audio-stream reference and the linked AWS Transcribe Streaming documentation. Determine where this Android SDK exposes microphone audio and how a new observer event could deliver a base64 stream to JavaScript; done means the live-captioning integration can consume that stream without the reported echo issue.

Written by the indexing model from the issue text.