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# Thread Subject: LPC, AR parameters from reflection coefficients

 Subject: LPC, AR parameters from reflection coefficients From: Raffaele Guida Date: 9 May, 2012 18:46:07 Message: 1 of 3 Hello everybody, I need to calculate the AR parameters (p order), given a noisy audio signal. Is it correct if I use the function: lpc(signal, p)? Or do I need to use a different function which has the noise variance as an input? Thanks to the STFT I can evaluate the variance of the noise
 Subject: LPC, AR parameters from reflection coefficients From: Raffaele Guida Date: 9 May, 2012 18:57:07 Message: 2 of 3 "Raffaele Guida" wrote in message ... > Hello everybody, > > I need to calculate the AR parameters (p order), given a noisy audio signal. > > Is it correct if I use the function: > lpc(signal, p)? > > Or do I need to use a different function which has the noise variance as an input? Thanks to the STFT I can evaluate the variance of the noise I forgot, I need to evaluate the AR parameters from the reflection coefficients
 Subject: LPC, AR parameters from reflection coefficients From: Rajiv Singh Date: 10 May, 2012 13:04:32 Message: 3 of 3 See also "AR" function (System Identification Toolbox): http://www.mathworks.com/help/toolbox/ident/ref/ar.html rajiv "Raffaele Guida" wrote in message news:joeem3\$n3s\$1@newscl01ah.mathworks.com... > "Raffaele Guida" wrote in message > ... >> Hello everybody, I need to calculate the AR parameters (p order), given a >> noisy audio signal. Is it correct if I use the function: >> lpc(signal, p)? >> >> Or do I need to use a different function which has the noise variance as >> an input? Thanks to the STFT I can evaluate the variance of the noise > > I forgot, I need to evaluate the AR parameters from the reflection > coefficients