From: Takashi Iwai <tiwai@suse.de>
To: Shaju Abraham <shaju@multitech.co.in>
Cc: ALSA development <alsa-devel@alsa-project.org>
Subject: Re: Period Size in ymf724
Date: Mon, 23 Sep 2002 12:59:36 +0200 [thread overview]
Message-ID: <s5hbs6pott3.wl@alsa2.suse.de> (raw)
In-Reply-To: <3D8E94DF.E13DB0E8@multitech.co.in>
At Mon, 23 Sep 2002 09:43:20 +0530,
Shaju Abraham wrote:
>
> Hi all,
> We tried using a ymf724 pci sound card and observed that the
> minimum period size we can get is 944 bytes.( with -F switch of aplay).
> We had tried the same switch of aplay with a cmipci card and the minimum
> period size we could get was about only 64 bytes.
unfortuantely both cards can't work with such a small period size.
i don't think any consumer card works with 64 bytes per period.
>
> Basically, we are trying this 'cos we want the card to raise interrupts
> as frequently as possible.
>
> Is this a h/w limitation of ymf724 card or is there any way we can get
> to reduce the period size on a ymf724 card to around 64 bytes ?
no. ymf724 produces interrupts with a fixed frequency (256/48000 =
5.333 msec), independent from the buffer or period size.
Takashi
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prev parent reply other threads:[~2002-09-23 10:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-23 4:13 Period Size in ymf724 Shaju Abraham
2002-09-23 10:59 ` Takashi Iwai [this message]
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