Class OpusEncoder

constructor

• new OpusEncoder(sampleRate, channels, application): OpusEncoder

• Create an opus encoder.

  Parameters

  • sampleRate: number

    Sampling rate of input signal (Hz) This must be one of 8000, 12000, 16000, 24000, or 48000.
  • channels: number

    Number of channels (1 or 2) in input signal.
  • application: OpusApplication

    Coding mode.

  Returns OpusEncoder

bitrate

encode

• encode(pcm, frameSize): Buffer

• Encodes an Opus frame from 16-bit signed integer input.

  Parameters

  • pcm: Buffer

    PCM input signal buffer. Length is frame_size * channels * 2.
  • frameSize: number

    Number of samples per channel in the input signal. This must be an Opus frame size for the encoder's sampling rate.

  Returns Buffer

  The encoded Opus packet of the frame.

encodeFloat

• encodeFloat(pcm, frameSize): Buffer

• Encodes an Opus frame from floating point input.

  Parameters

  • pcm: Buffer

    PCM input signal buffer. Length is frame_size * channels * 2.
  • frameSize: number

    Number of samples per channel in the input signal. This must be an Opus frame size for the encoder's sampling rate.

  Returns Buffer

  The encoded Opus packet of the frame.