pipeparts.condition module

Review Status

Names	Hash	Date
Florent, Sathya, Duncan Me, Jolien, Kipp, Chad	8a6ea41398be79c00bdc27456ddeb1b590b0f68e	2014-06-18

pipeparts.condition.mkcondition(pipeline, src, target_rate, instrument, psd=None, psd_fft_length=32, ht_gate_threshold=inf, idq_gate_threshold=inf, veto_segments=None, nxydump_segment=None, track_psd=False, block_duration=250000000, zero_pad=None, width=64, statevector=None, dqvector=None, idq_series=None, idq_channel_name=None, fir_whiten_reference_psd=None, track_latency=False)

Build pipeline stage to whiten and downsample h(t).

• pipeline: the gstreamer pipeline to add this to

• src: the gstreamer element that will be providing data to this

• target_rate: the requested sample rate.

• instrument: the instrument to process

• psd: a psd frequency series

• psd_fft_length: length of fft used for whitening

• ht_gate_threshold: gate h(t) if it crosses this value

• veto_segments: segments to mark as gaps after whitening

• track_psd: decide whether to dynamically track the spectrum or use the fixed spectrum provided

• width: type convert to either 32 or 64 bit float

• fir_whiten_reference_psd: when using FIR whitener, use this PSD to define desired desired phase response

Gstreamer graph describing this function

pipeparts.condition.mkhtgate(pipeline, src, control=None, threshold=8.0, attack_length=128, hold_length=128, invert_control=True, **kwargs)

A convenience function to provide thresholds on input data. This can be used to remove large spikes / glitches etc. Of course you can use it for other stuff by plugging whatever you want as input and ouput

NOTE: the queues constructed by this code assume the attack and hold lengths combined are less than 1 second in duration.

Gstreamer Graph

pipeparts.condition.mkmultiband(pipeline, head, rates, instrument=None, unit_normalize=True)

Build pipeline stage to multiband a stream.

• rates: a list of the requested sample rates, e.g., [512,1024].