Runtime Audio Importer

Documentation for the Runtime Audio Importer plugin.

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After importing a sound wave, you may want to export it to memory or a file. The plugin provides functionality to export audio in various formats, with options to override the sample rate (resampling) and the number of channels (mixing).

📄️ Sound wave properties

Accessing Audio Data

🗃️ Sound waves

4 items

📄️ Transcode audio

Transcoding formats

📄️ Pre-import audio

Overview

📄️ MetaSounds integration

Requirements and Limitations

📄️ Voice activity detection

Streaming Sound Wave, along with its derived types such as Capturable Sound Wave, supports Voice Activity Detection (VAD). VAD filters incoming audio data to populate the internal buffer only when voice is detected. This feature is implemented using libfvad.

📄️ Pixel streaming audio capture

Pixel Streaming is a plugin for Unreal Engine that streams rendered frames and synchronizes input/output via WebRTC. The application runs on the server side, whereas the client side handles rendering and user interaction. For more details on Pixel Streaming and setup, refer to Pixel Streaming Documentation.

📄️ Sound wave duplication

All sound waves used in this plugin are inherited from USoundWaveProcedural, which supports only a single playback at a time. Therefore, if you want to play the same sound wave in parallel, for example, when implementing an "echo" effect, you will need to duplicate the sound wave. To optimize this process, you can use the following function and specify to use the shared audio buffer, which means that it won't allocate memory for the audio buffer for the new sound wave but will instead share the same audio buffer between the original and duplicated sound waves. You can create as many duplicates as needed.

📄️ PCM Data Handling

Obtaining PCM Data as the sound wave plays

📄️ Audio Metadata

This page provides utilities for analyzing audio files without fully importing them, which is more efficient for retrieving basic information.