Audio Files

The engine currently supports importing uncompressed little endian 16 bit wave files at any sample rate (although sample rates of 44100 Hz or 22050 Hz are recommended).

Importing with the normal sound factory yields a simple sound node wave that can be referenced by a sound cue for playback. These sounds can be mono or stereo. Importing with a special naming convention gives the potential of multichannel (e.g. 5.1) sounds. Up to 8 channel sounds can be compressed on all platforms, although not all platforms can play them back efficiently. The package saving process does all the necessary work to convert to the platform's native format. There is no strict speaker mapping, so the number of channels infers which channels are played on which speakers (see table below).

Compression settings are tweaked to maintain similar quality across platforms. After testing many sounds, our musician determined an XMA quality of 40 was equivalent to an ogg vorbis quality of 0.15.

Single File Import

In the Content Browser:

1. From the Content Browser, click the Import button (pictured below).

1. Select the .WAV file you wish to import.

Or

1. Select your sound file in a Windows File Explorer window.
2. Click and drag it into the Content Browser in Unreal Editor 4.

Multichannel Import

In the Content Browser:

1. From the Content Browser, click the Import button (pictured below).

1. Select the files that have the appropriate naming convention that will form your sound asset, such as: "Surround_fl.wav", "Surround_fr.wav", "Surround_sl.wav", "Surround_sr.wav".
2. This will create a four channel asset called "Surround."

Or

1. Select all your sound files in a Windows File Explorer window.
2. Click and drag them into the Content Browser in Unreal Editor 4.