View Source Membrane.Audiometer.Peakmeter (Membrane Audiometer plugin v0.9.0)
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}}- wheremeasurementis aMembrane.Audiometer.Peakmeter.Notification.Measurementstruct containing computed audio levels. See its documentation for more details about the actual value format.
See options/0 for available options.
element-options
Element options
Passed via struct Membrane.Audiometer.Peakmeter.t/0
intervalanyDefault value:
50000000
How often peakmeter should emit messages containing sound level (in Membrane.Time units).
pads
Pads
input
:input
| Availability | :always |
| Caps | Membrane.RawAudio |
| Demand mode | :auto |
| Demand unit | :buffers |
| Direction | :input |
| Mode | :pull |
| Name | :input |
output
:output
| Availability | :always |
| Caps | Membrane.RawAudio |
| Demand mode | :auto |
| Demand unit | :buffers |
| Direction | :output |
| Mode | :pull |
| Name | :output |
Link to this section Summary
Functions
Returns pads descriptions for Membrane.Audiometer.Peakmeter
Returns description of options available for this module
Link to this section Types
@type amplitude_t() :: [number() | :infinity | :clip]
@type t() :: %Membrane.Audiometer.Peakmeter{interval: any()}
Struct containing options for Membrane.Audiometer.Peakmeter
Link to this section Functions
@spec membrane_pads() :: [{Membrane.Pad.name_t(), Membrane.Pad.description_t()}]
Returns pads descriptions for Membrane.Audiometer.Peakmeter
@spec options() :: keyword()
Returns description of options available for this module