transport

class EventHandler(events, fs=48000.0)

Bases: object

Parameters

  • events (array) – An array of events that should be handled

  • fs (float) – sample frequency of the handler, used to calculate a value of time

sample_callback(sample)
Parameters

sample (in) – The current sample that should be used to calculate any events or values

class EventSequencer(events, fs=48000.0, sequence=[])

Bases: object

Parameters

  • events (array) – An array of events that should be handled

  • fs (float) – sample frequency of the handler, used to calculate a value of time

  • sequence (array(int)) – An array of sample values at which events should be fired

sample_callback(sample)
Parameters

sample (int) – The current sample that should be used to calculate any events or values

class GlobalTransport(event_handlers, input_device=0, output_device=0, channels=2, buffer_len=1024, fs=48000.0)

Bases: object

Parameters

  • event_handlers (array) – An array of event handlers that should sync to this transport

  • input_device (int) – The input device index. Can be found by running python -m sounddevice and selecting your desired device

  • output_device (int) – The output device index. Can be found by running python -m sounddevice and selecting your desired device

  • channels (int) – Number of channels the transport should have

  • buffer_len (int) – Audio buffer length of each channel

  • fs (float) – Sampling frequency of the transport in Hz

Variables

  • count (int) – The current sample the transport is on

  • block (array) – An array of audio data that will be output on the next buffer callback

  • chs – An array of node handlers that will be called for each channel

get_block()

Executed every time an audio buffer is needed

class NodeHandler(nodes=[], fs=48000.0)

Bases: object

Parameters

  • nodes (array) – An array of nodes that should be played

  • fs (float) – sample frequency of the handler, used to calculate a value of time

add_node(node)
Parameters

node – Node to add to the handler

sample_callback(sample)
Parameters

sample (int) – The current sample that should be used to calculate any events or values

Returns

A PCM value representing all the nodes in the node handler mixed together

Return type

float

events utils