Re: [Alsa-user] Configuring ALSA and SCHIIT BIfrost for "bit perfect"
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From: chris h. <clh...@gm...> - 2012-09-18 02:22:37
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Another observation (maybe it's a data point or maybe it just adds to the confusion...) On Thu, Sep 13, 2012 at 8:40 AM, chris hermansen <clh...@gm...> wrote: > Daniel and list; > > On Thu, Sep 13, 2012 at 6:06 AM, Daniel Mack <zo...@gm...> wrote: > >> >> Ok, then this approach does not work. But thanks for testing. I need to >> come up with a different solution. >> >> The thing is: I have such a device on my desk, all I'm missing is an >> adequate counter part that is able to reveive sample rates up to 192KHz >> so I can tes. What kind of device do you have connected to it? > > Daniel, my device is this one: > > http://schiit.com/cart/index.php?main_page=product_info&cPath=0&products_id=7 > > The USB interface is inside the box, on a removable daughter board. > You will see > a pretty good description of the bits and pieces on that web site, and there is > a review which disassembles it here: > > http://www.6moons.com/audioreviews/schiit2/3.html > > although this isn't supremely technical, it does give a great view of > the inside, > which may be helpful. > > Anyway, you will see this is an "all in one" job, so the user picks > the connection > on the digital side (SPDIF, TOSLINK, USB) and then connects up the analogue > outputs to the stereo. > > Other than that, the front end I've been testing is a Dell Inspiron 1501 running > Ubuntu 12.10 beta 1 plus updates, with your "kustom kernel" installed. > >> Thanks for your testing effort, I'll get back to you wonce I have a new >> patch for you. > > No problem, thank YOU for your hard work on this. > > As I mentioned before, the Schiit manufacturers seem very approachable; > as a customer, I feel I could ask them for some advice and probably get > it. So if you have any questions, we could try that approach. > > Meanwhile, I am waiting for a TOSLINK adaptor to arrive to see if that > works better. Haven't got the TOSLINK adapter yet. But I was sitting there a minute ago listening to ahem The Allman Brothers (don't worry the headphones were on and the missus could not hear)... And I switched from Guayadeque 3.5- which has supposedly bit-perfect (hw:1,0) to Quod Libet (which has supposedly bit-perfect alsasink device=hw:1,0) When Quod Libet started playing, the bass kazoo was back! I restarted the song and all was well. I find this interesting because it was the same bit stream / same resolution / same bit rate (same song!!) but something got reset deep down below... -- Chris Hermansen · clh...@gm... C'est ma façon de parler. |