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Supported Input Audio

SpatialReal services currently accept mono 16-bit PCM (s16le) audio as raw PCM bytes.

Format

Raw PCM bytes in s16le format

Channels

1 channel (mono)

Bit Depth

16-bit samples

Sample Rates

8000 to 48000 Hz from the supported set below

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Specification

PropertyValue
Sample RateOne of 8000, 16000, 22050, 24000, 32000, 44100, 48000
Channels1 (mono)
Bit Depth16-bit
FormatRaw PCM bytes
PCM Encodings16le
If your source audio uses stereo channels, floating point samples, compressed codecs, or an unsupported sample rate, convert it before sending it to SpatialReal.

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What s16le Means

  • s16 means each audio sample is a signed 16-bit integer.
  • le means the bytes are stored in little-endian order.
  • mono means the stream contains a single channel only.

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Common Conversion Checklist

Before sending audio to the SDK or service, make sure your pipeline outputs:
  • a supported sample rate
  • mono audio
  • 16-bit signed PCM samples
  • raw PCM bytes rather than WAV headers or compressed audio frames
For a practical overview of common audio encodings and container formats, see the FFmpeg audio types reference.