[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Audio signal

From: Matthias Brennwald
Subject: Re: Audio signal
Date: Sun, 18 Nov 2007 18:44:55 +0100

On 18.11.2007, at 16:54, Pol Moreno wrote:

But why should I remove the Fs from sin(..)?

Isn't it suposed to be there?

The sampling rate is used to determine the time values of your signal samples, nothing more. Why would you want to put in Fs in to the sine function?

Imagine an analogue sine signal with a frequency f0, i.e. y = sin (2pi x f0 x t). Note that the only arguments of the sine function are the frequency f0 and the time t. If this signal is digitized with a sampling frequency Fs, the values of the sine function will be sampled at time 1/Fs, 2/Fs, 3/Fs, 4/Fs,... . The frequency f0 of the sine signal will not change. The sine function must therefore not depend on Fs.

(please keep discussions on the octave help list, so that others can contribute or profit)


Matthias Brennwald
Lägernstrasse 6
CH 8037 Zürich
+41 (0)44 364 17 03

reply via email to

[Prev in Thread] Current Thread [Next in Thread]