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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 <joee1e$k7a$1@newscl01ah.mathworks.com>...
> 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" <raff.guida@yahoo.it> wrote in message
news:joeem3$n3s$1@newscl01ah.mathworks.com...
> "Raffaele Guida" wrote in message
> <joee1e$k7a$1@newscl01ah.mathworks.com>...
>> 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

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