Newbie question to period/buffer/tick time

Newbie question to period/buffer/tick time

[Timo Steuerwald]

Hi all!

I have some simple newbie questions:
How will be the period/buffer/tick time calculated?
How depends it on the other values?
What exactly means period and tick in ALSA?
And last but not least, where can I found the document where all this is 
explained? :-)

Cheers,

Timo


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Re: Newbie question to period/buffer/tick time

[Takashi Iwai]

At Thu, 26 Jan 2006 18:32:37 +0100,
Timo Steuerwald wrote:
> 
> Hi all!
> 
> I have some simple newbie questions:
> How will be the period/buffer/tick time calculated?

Buffer size of time defines the size of DMA ring buffer.
Period size or time defines the interval the DMA interrupt occurs.

If the number of periods is integer,
	buffer size = period size * number of periods
	buffer time = period time * number of periods

Forget about tick if you mean about the PCM.
It's anyway independent from buffer/period sizes.

> How depends it on the other values?

You don't have to care about other values usually.  They are only for
special use.


Takashi


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