f9dff1f9fa
It may be the case that you may hear some unwanted noise while playing back with 24/32 bit. This is a problem in the USB system. Explanation from Hans Petter Selasky: ---snip--- The current USB sound driver only uses one isochronous buffer, that is restarted when it is completed. This will lead to a short period of time, +1ms, where no sound data is sent to the external USB device. Depending on the load of your computer, this can be as much as 50ms. So the USB sound driver must use 2 isochronous transfers. At the beginning one will queue both. Then these are restarted on completion. This will result in a constant-rate data stream to the external sound device, a minimum sound buffer equal to the size of the isochronous buffer, and possibly the sound will reach your ears with less delay. Little delay is a result of constant data rate. Currently only my USB driver will support that. If one tries that with the USB driver in *BSD, then it will crash at the first moment one gets a buffer underrun. ---snip--- Submitted by: Kazuhito HONDA <kazuhito@ph.noda.tus.ac.jp> Mono-recording still not tested by: julian
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html