From owner-freebsd-current Thu Jan 27 20:22:50 2000 Delivered-To: freebsd-current@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id B3901157AD for ; Thu, 27 Jan 2000 20:22:45 -0800 (PST) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.1/8.9.1) with ESMTP id XAA23653; Thu, 27 Jan 2000 23:22:43 -0500 (EST) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.9.3/8.9.1) id XAA46942; Thu, 27 Jan 2000 23:22:12 -0500 (EST) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Thu, 27 Jan 2000 23:22:12 -0500 (EST) To: Nick Hibma Cc: FreeBSD CURRENT Mailing List Subject: Re: pcm - stutters In-Reply-To: References: X-Mailer: VM 6.43 under 20.4 "Emerald" XEmacs Lucid Message-ID: <14481.5856.865621.444727@grasshopper.cs.duke.edu> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Nick Hibma writes: > > The output of my ESS 1869 stutters whenever there is no new data fed to > it. For example pressing Ctrl-Z, or heavy disk usage (normally making > mpg123 jump). The stuttering is repetition of one short fragment of > about a quarter of a second, indefinitely > > Anything I can try with this machine current as of jan.24 02:00 GMT? I don't know much about sound, but it seems like pcm doesn't deal very gracefully with underflow. I have a very wimpy machine (133MHz P5 laptop): CPU: Pentium/P54C (133.64-MHz 586-class CPU) <...> sbc0: at port 0x220-0x22f,0x388-0x38b,0x330-0x331 irq 5 drq 1 on isa0 pcm0: on sbc0 I cannot play anything with amp -- the song starts to stutter after a second or two of play. I can use mgp123 which (I think) uses a more efficient decoder. Using mpg123, I see the same symptoms as you report. RealPlayerG2 seems to do better than amp. Especially if I tell it to "disable custom sampling rates." But still not as good as mpg123. Drew ------------------------------------------------------------------------------ Andrew Gallatin, Sr Systems Programmer http://www.cs.duke.edu/~gallatin Duke University Email: gallatin@cs.duke.edu Department of Computer Science Phone: (919) 660-6590 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message