This element computes peaks in each channel of the given signal at regular time intervals, regardless if it receives data or not.

It uses erlang's :timer.send_interval/2 which might not provide perfect accuracy.

It accepts audio samples in any format supported by Membrane.RawAudio module.

It will periodically emit notifications, of the following format:

• {:audiometer, :underrun} - if there were not enough data to compute audio level within given interval,
• {:audiometer, {:measurement, measurement}} - where measurement is a Membrane.Audiometer.Peakmeter.Notification.Measurement struct containing computed audio levels. See its documentation for more details about the actual value format.

See options/0 for available options.

Element options

Passed via struct Membrane.Audiometer.Peakmeter.t/0

• interval

  Membrane.Time.t()

  Default value: 50 |> Membrane.Time.milliseconds()
  How often peakmeter should emit messages containing sound level (in Membrane.Time units).

Pads

:input

Accepted formats:

RawAudio

:output

Accepted formats:

RawAudio