Ñò "pXJc@s¼ddklZlZlZlZlZlZlZlZl Z l Z l Z l Z l Z lZlZlZdd„Zdd„Zddddd d d „Zd dd d d dd „ZdS(iÿÿÿÿ(tasarraytzerostplacetnantmodtpitextracttlogtsqrttexptcostsintsizetpolyvaltpolyinttlog10ic Csgt|ƒt|ƒ}}t|||ƒ}t|||ƒ}|iidjo|ii}nd}t|i|ƒ}|dj|djB}t||tƒt|dtƒ}d|||dtj@}t ||ƒ}t ||ƒ} t|||t| dƒd|d|@} t | |ƒ}t | |ƒ} t|| t| d|td| ƒ|S(sÝReturns a periodic sawtooth waveform with period 2*pi which rises from -1 to 1 on the interval 0 to width*2*pi and drops from 1 to -1 on the interval width*2*pi to 2*pi width must be in the interval [0,1] tfFdDtdiii(R( RtdtypetcharRtshapeRRRRR( tttwidthtwtytypetytmask1ttmodtmask2ttsubtwsubtmask3((sFC:\graphics\Tools\Python26\Lib\site-packages\scipy\signal\waveforms.pytsawtooths&(gà?c CsCt|ƒt|ƒ}}t|||ƒ}t|||ƒ}|iidjo|ii}nd}t|i|ƒ}|dj|djB}t||tƒt|dtƒ}d|||dtj@}t ||ƒ}t ||ƒ} t||dƒd|d|@} t | |ƒ}t | |ƒ} t|| dƒ|S(s¦Returns a periodic square-wave waveform with period 2*pi which is +1 from 0 to 2*pi*duty and -1 from 2*pi*duty to 2*pi duty must be in the interval [0,1] RRiiiiÿÿÿÿ(sfFdD( RRRRRRRRRR( RtdutyRRRRRRRRR((sFC:\graphics\Tools\Python26\Lib\site-packages\scipy\signal\waveforms.pytsquare.s&ièiúÿÿÿiÄÿÿÿic Cs”|djotd|‚n|djotd|‚n|djotd|‚ntd|dƒ}t||d dt|ƒ}|d joC|djo td ‚ntd|dƒ} tt| ƒ |ƒSt| ||ƒ} | tdt||ƒ} | tdt||ƒ} | o | o| S| o|o | | fS|o| o | | fS|o|o| | | fSd S( s@Return a gaussian modulated sinusoid: exp(-a t^2) exp(1j*2*pi*fc) If retquad is non-zero, then return the real and imaginary parts (inphase and quadrature) If retenv is non-zero, then return the envelope (unmodulated signal). Otherwise, return the real part of the modulated sinusoid. Inputs: t -- Input array. fc -- Center frequency (Hz). bw -- Fractional bandwidth in frequency domain of pulse (Hz). bwr -- Reference level at which fractional bandwidth is calculated (dB). tpr -- If t is 'cutoff', then the function returns the cutoff time for when the pulse amplitude falls below tpr (in dB). retquad -- Return the quadrature (imaginary) as well as the real part of the signal retenv -- Return the envelope of th signal. is'Center frequency (fc=%.2f) must be >=0.s+Fractional bandwidth (bw=%.2f) must be > 0.s7Reference level for bandwidth (bwr=%.2f) must be < 0 dBi iiitcutoffs.Reference level for time cutoff must be < 0 dBN(t ValueErrortpowRRRR R R ( RtfctbwtbwrttprtretquadtretenvtreftattreftyenvtyItyQ((sFC:\graphics\Tools\Python26\Lib\site-packages\scipy\signal\waveforms.pyt gausspulseSs2    !     idtlinearc Csø|td9}t|ƒdjo&tdttt|ƒ|ƒ|ƒS|djo4|||}dt||d|||}nc|djoÄ|d jo/t||ƒ} t||ƒ} | | }}nM|d jo/t||ƒ} t||ƒ} | | }}ntd |ƒ‚||||}dt||||||d}n’|djot||jotd||fƒ‚nt||ƒ|}dt||t d||ƒd|t dƒ}ntd|ƒ‚t||ƒS(sêFrequency-swept cosine generator. Parameters ---------- t : ndarray Times at which to evaluate the waveform. f0 : float or ndarray, optional Frequency (in Hz) of the waveform at time 0. If `f0` is an ndarray, it specifies the frequency change as a polynomial in `t` (see Notes below). t1 : float, optional Time at which `f1` is specified. f1 : float, optional Frequency (in Hz) of the waveform at time `t1`. method : {'linear', 'quadratic', 'logarithmic'}, optional Kind of frequency sweep. phi : float Phase offset, in degrees. qshape : {'convex', 'concave'} If method is 'quadratic', `qshape` specifies its shape. Notes ----- If `f0` is an array, it forms the coefficients of a polynomial in `t` (see `numpy.polval`). The polynomial determines the waveform frequency change in time. In this case, the values of `f1`, `t1`, `method`, and `qshape` are ignored. i´iiR3tlintligà?t quadratictquadtqtconcavetconvexsHqshape must be either 'concave' or 'convex' but a value of %r was given.it logarithmicRtlos9For a logarithmic sweep, f1=%f must be larger than f0=%f.i sSmethod must be 'linear', 'quadratic', or 'logarithmic' but a value of %r was given.(R3R4R5(R6R7R8(R;slogslo( RR R R RtmaxtminR$RR%R( Rtf0tt1tf1tmethodtphitqshapetbetat phase_angletmxftmnf((sFC:\graphics\Tools\Python26\Lib\site-packages\scipy\signal\waveforms.pytchirpŠs:& &    *  9 N(tnumpyRRRRRRRRRR R R R R RRR R"R2tNoneRI(((sFC:\graphics\Tools\Python26\Lib\site-packages\scipy\signal\waveforms.pytsj ' %7