Re: linear PCM
Re: linear PCM
- Subject: Re: linear PCM
- From: "tahome izwah" <email@hidden>
- Date: Wed, 16 Jan 2008 21:07:23 +0100
Yes I know. However, he did not define t = 1/sr in his first post (at
least, I didn't see it) so he would have to take it into account when
calculating the argument of the sin function.
Of course he can just increment his counter by 1/sr, which does the same thing.
--th
2008/1/16, David Duncan <email@hidden>:
> On Jan 16, 2008, at 1:27 AM, tahome izwah wrote:
>
> > You have to take dt into account when calculating the samples from
> > your trig function. In the PCM domain your samples are always spaced
> > at a uniform and time normalized step size of unity. IOW, sin() has no
> > way of knowing your dt if you don't include it when calculating the
> > argument.
>
> His point is that he's taking dt into account with his calculation of
> t. That is, at 1 second through the sound, t==1, but to get there in
> 44100 steps, it goes through 0/44100, 1/44100, etc in 44100 steps.
> --
> Reality is what, when you stop believing in it, doesn't go away.
> Failure is not an option. It is a privilege reserved for those who try.
>
> David Duncan
>
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