Measurement Objects

class pytta.RecMeasure(lengthDomain=None, fftDegree=None, timeLength=None, *args, **kwargs)

Recording object

• lengthDomain (‘time’), (str):

  signal’s length domain. May be ‘time’ or ‘samples’;

• timeLength (seconds), (float):

  signal’s time length in seconds for lengthDomain = ‘time’;

• fftDegree (fftDegree), (float):

  2**fftDegree signal’s number of samples for lengthDomain = ‘samples’;

• device (system default), (list/int):

  list of input and output devices;

• inChannels ([1]), (list/int):

  list of device’s input channel used for recording;

• samplingRate (44100), (int):

  signal’s sampling rate;

• numSamples (samples), (int):

  signal’s number of samples

• freqMin (20), (float):

  minimum frequency bandwidth limit;

• freqMax (20000), (float):

  maximum frequency bandwidth limit;

• comment (‘No comments.’), (str):

  some commentary about the signal or measurement object;

• run():

  starts recording using the inch and device information, during timeLen seconds;

run()

Run method: starts recording during Tmax seconds Outputs a signalObj with the recording content

class pytta.PlayRecMeasure(excitation=None, outputAmplification=0, *args, **kwargs)

Playback and Record object

• excitation (SignalObj), (SignalObj):

  signal information used to reproduce (playback);

• outputAmplification (0), (float):

  Gain in dB applied to the output channels.

• device (system default), (list/int):

  list of input and output devices;

• inChannels ([1]), (list/int):

  list of device’s input channel used for recording;

• outChannels ([1]), (list/int):

  list of device’s output channel used for playing or reproducing a signalObj;

• samplingRate (44100), (int):

  signal’s sampling rate;

• lengthDomain (‘time’), (str):

  signal’s length domain. May be ‘time’ or ‘samples’;

• timeLength (seconds), (float):

  signal’s time length in seconds for lengthDomain = ‘time’;

• fftDegree (fftDegree), (float):

  2**fftDegree signal’s number of samples for lengthDomain = ‘samples’;

• numSamples (samples), (int):

  signal’s number of samples

• freqMin (20), (int):

  minimum frequency bandwidth limit;

• freqMax (20000), (int):

  maximum frequency bandwidth limit;

• comment (‘No comments.’), (str):

  some commentary about the signal or measurement object;

Methods: meaning;

• run():

  starts playing the excitation signal and recording during the excitation timeLen duration;

run()

Starts reproducing the excitation signal and recording at the same time Outputs a signalObj with the recording content

class pytta.FRFMeasure(method='linear', winType=None, winSize=None, overlap=None, regularization=True, *args, **kwargs)

Transferfunction object

• excitation (SignalObj), (SignalObj):

  signal information used to reproduce (playback);

• device (system default), (list | int):

  list of input and output devices;

• inChannels ([1]), (list | int):

  list of device’s input channel used for recording;

• outChannels ([1]), (list | int):

  list of device’s output channel used for playing or reproducing a signalObj;

• samplingRate (44100), (int):

  signal’s sampling rate;

• lengthDomain (‘time’), (str):

  signal’s length domain. May be ‘time’ or ‘samples’;

• timeLength (seconds), (float):

  signal’s time length in seconds for lengthDomain = ‘time’;

• fftDegree (fftDegree), (float):

  2**fftDegree signal’s number of samples for lengthDomain = ‘samples’;

• numSamples (samples), (int):

  signal’s number of samples

• freqMin (20), (int):

  minimum frequency bandwidth limit;

• freqMax (20000), (int):

  maximum frequency bandwidth limit;

• comment (‘No comments.’), (str):

  some commentary about the signal or measurement object;

• run():

  starts playing the excitation signal and recording during the excitation timeLen duration;

run()

Starts reproducing the excitation signal and recording at the same time Outputs the transferfunction ImpulsiveResponse