Neuros is very nice but a bit more expensive depending on how much storage you need. It will record in mp3 or wav (up to 15/48KHz).
Jan On Sun, 2004-12-26 at 16:19, Ian Howard wrote: > Hey all, > > We are looking for some portable digital recording devices with the > following criteria: > > - very small > - durable > - near $100 ($100-150) > - usb compatible > - linux + windows friendly > - mic-in with a reasonable signal-to-noise ratio > - descent quality recordings > - battery powered > > We intend to distribute about 10 - 20 of these units to radio > journalists in Mali, whom will use these devices to collect material for > their programs which they can then edit in Audacity and broadcast on the > air. > > We are looking at devices such as the iRiver 190T > > Any one have any experience with such devices, in particular using them > with linux? > > Ian > > > > > > On Sun, 2004-12-26 at 12:06 -0500, > [EMAIL PROTECTED] wrote: > > Send linux-audio-dev mailing list submissions to > > [email protected] > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://music.columbia.edu/mailman/listinfo/linux-audio-dev > > or, via email, send a message with subject or body 'help' to > > [EMAIL PROTECTED] > > > > You can reach the person managing the list at > > [EMAIL PROTECTED] > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of linux-audio-dev digest..." > > > > > > Today's Topics: > > > > 1. Re: Tascam US428 Continued hangups (Spencer Russell) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Sun, 26 Dec 2004 02:09:21 -0800 > > From: Spencer Russell <[EMAIL PROTECTED]> > > Subject: Re: [linux-audio-dev] Tascam US428 Continued hangups > > To: [email protected] > > Message-ID: <[EMAIL PROTECTED]> > > Content-Type: text/plain; charset=us-ascii > > > > On Fri, Dec 24, 2004 at 12:05:07PM -0500, Rui Nuno Capela wrote: > > > > > > ... > > > device. It was probably this very one that was aunting you before. After > > > some attention and furious alsa-bugtracker exchange, Karten Wiese has been > > > able to solve this, even tought he's got no OHCI hardware near him. > > > > > > > I was watching that thread a little, because my symptoms were > > very similar. Strangely, though, I have a UHCI based card, so I'm > > not sure why I was seeing similar symtoms. > > > > > Then Karsten did it again. He crafted a special jackd alsa/usx2y backend > > > which enabled the so-called raw-usb mode of operation. And it was just > > > yesterday I have proposed the merge into the official alsa backend driver > > > on the jackit-devel list. With this new experimental stuff, one can run > > > jackd in realtime with pretty lowest-latency parameters, without aural > > > artifacts (i.e. crackling). AFAICT this is a greatest breakthrough on the > > > USB audio arena, so I would think twice about getting rid of your US428 ;) > > > > > > > I'm having a bit of trouble with the usx2y backend to jackd. I > > bastardized the jackd-us2xy rpm to make a nice deb file, but > > jackd still says "unknown driver 'usx2y'". Even downloading and > > compiling the source, and running it directly from the directory > > it ws compiled into. And does it automatically use the rawusb > > interface? What's the advantage of using the usx2y driver as > > opposed to the alsa driver? > > > > > So my recipe goes like this: > > > > > > 1. Have REALTIME_PREEMPT on the kernel config. > > > > > > 2. Make sure you have loaded the latest snd-usb-usx2y>=0.8.7.1 (as of > > > latest alsa-kernel cvs). > > > > > > 3. Tune the RT priorities (SCHED_FIFO) of the time-audio critical IRQ > > > threads: > > > 90 - timer (IRQ 0) > > > 80 - rtc (IRQ 8) > > > 70 - snd (or whatever your PCI soundcard will hook, usually IRQ 5) > > > 60 - usb (ohci_hcd or uhici_hcd, usually IRQ 10) > > > You should have schedutils installed (chrt) for this exercise. > > > > > > 4. Load the snd-usb-usx2y with the nrpacks parameter set for: > > > a. high-stability: nrpacks=4 > > > b. low-latency: nrpacks=1 > > > Anyway, be advised that you can only run the forementioned "rawusb" > > > mode if you set on this later one (modprobe snd-usb-usx2y nrpacks=1). > > > > > > Run your jackd command line (or qjackctl;) as usual, but given the above > > > priority tunning, you should try e.g. jackd -R -P60 ... > > > > > Thanks a lot for this detailed info! I recompiled the newest > > snd-usb-usx2y driver, but how do I tune RT priorities? I got the > > schedutils package, but I'm having trouble finding details on how > > to use chrt. > > > > Thanks again for the info. > > -spencer > > > > > > ------------------------------ > > > > _______________________________________________ > > linux-audio-dev mailing list > > [email protected] > > http://music.columbia.edu/mailman/listinfo/linux-audio-dev > > > > > > End of linux-audio-dev Digest, Vol 15, Issue 46 > > ***********************************************
