>>>>> "LabWINC" == LabWINC <[EMAIL PROTECTED]> writes:
LabWINC> Hi all, i'm looking for a module to implement a digital LabWINC> FIR filter! Can anyone help me? scipy.org Between scipy and matplotlib, you'll feel quite comfortable with python as a former matlab user help scipy.filter (see FIR filter design below) DESCRIPTION Signal Processing Tools ======================= Convolution: convolve -- N-dimensional convolution. correlate -- N-dimensional correlation. fftconvolve -- N-dimensional convolution using the FFT. convolve2d -- 2-dimensional convolution (more options). correlate2d -- 2-dimensional correlation (more options). sepfir2d -- Convolve with a 2-D separable FIR filter. B-splines: bspline -- B-spline basis function of order n. gauss_spline -- Gaussian approximation to the B-spline basis function. cspline1d -- Coefficients for 1-D cubic (3rd order) B-spline. qspline1d -- Coefficients for 1-D quadratic (2nd order) B-spline. cspline2d -- Coefficients for 2-D cubic (3rd order) B-spline. qspline2d -- Coefficients for 2-D quadratic (2nd order) B-spline. Filtering: order_filter -- N-dimensional order filter. medfilt -- N-dimensional median filter. medfilt2 -- 2-dimensional median filter (faster). wiener -- N-dimensional wiener filter. symiirorder1 -- 2nd-order IIR filter (cascade of first-order systems). symiirorder2 -- 4th-order IIR filter (cascade of second-order systems). lfilter -- 1-dimensional FIR and IIR digital linear filtering. deconvolve -- 1-d deconvolution using lfilter. hilbert --- Compute the analytic signal of a 1-d signal. get_window --- Create FIR window. detrend --- Remove linear and/or constant trends from data. Filter design: remez -- Optimal FIR filter design. firwin --- Windowed FIR filter design. iirdesign --- IIR filter design given bands and gains iirfilter --- IIR filter design given order and critical frequencies freqs --- Analog filter frequency response freqz --- Digital filter frequency response Matlab-style IIR filter design: butter (buttord) -- Butterworth cheby1 (cheb1ord) -- Chebyshev Type I cheby2 (cheb2ord) -- Chebyshev Type II ellip (ellipord) -- Elliptic (Cauer) bessel -- Bessel (no order selection available -- try butterod) Linear Systems: lti -- linear time invariant system object. lsim -- continuous-time simulation of output to linear system. impulse -- impulse response of linear, time-invariant (LTI) system. step -- step response of continous-time LTI system. LTI Reresentations: tf2zpk -- transfer function to zero-pole-gain. zpk2tf -- zero-pole-gain to transfer function. tf2ss -- transfer function to state-space. ss2tf -- state-pace to transfer function. zpk2ss -- zero-pole-gain to state-space. ss2zpk -- state-space to pole-zero-gain. Waveforms: sawtooth -- Periodic sawtooth square -- Square wave gausspulse -- Gaussian modulated sinusoid chirp -- Frequency swept cosine signal Wavelets: daub -- return low-pass filter for daubechies wavelets qmf -- return quadrature mirror filter from low-pass cascade -- compute scaling function and wavelet from coefficients -- http://mail.python.org/mailman/listinfo/python-list