Ariff Abdullah 96831ae59b - Increase dynamic range of filter coefficients from 28bit to 30bit. ... This cause dramatic effect in overall precision and conversion quality by pushing down most aliasing artifacts around -180 dB. Spectrogram analysis/comparison: http://people.freebsd.org/~ariff/z_comparison/z_28vs30/ - Guard against possible 64bit overflow during accumulation process by slightly normalize and saturate sample and coefficient multiplication, possible during extreme 32bit downsampling (eg. 380KHz -> 8KHz) with custom preset that require more than ~7000 taps filter (which is overkill). - Add knobs through FEEDER_RATE_PRESETS to set dynamic range of filter coefficients/accumulator and prefered polynomial interpolator: COEFFICIENT_BIT:X (where 1 <= X <= 30, default: 30) ACCUMULATOR_BIT:X (where 32 <= X <=64, default: 58) INTERPOLATOR:I (where I = ZOH, LINEAR, QUADRATIC, HERMITE, BSPLINE, OPT32X, OPT16X, OPT8X, OPT4X, OPT2X) Approved by: re (kib)		2009-07-05 18:15:06 +00:00
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sound	- Increase dynamic range of filter coefficients from 28bit to 30bit.	2009-07-05 18:15:06 +00:00
acpi_quirks2h.awk	Catch up with ACPI-CA 20070320 import.	2007-03-22 18:16:43 +00:00
bus_macro.sh	Add convenience macros for bus_space usage that doesn't require specification	2005-09-24 20:11:07 +00:00
embed_mfs.sh	Introduce a standalone shell script for embedding MFS image.	2008-02-05 10:46:30 +00:00
fw_stub.awk	- Add Intel firmwares for Intel PRO/Wireless LAN 2100/2200/2915 cards in a	2007-03-02 11:42:56 +00:00
makeobjops.awk	/* -> /*- for license, minor formatting changes	2005-01-07 02:29:27 +00:00
miidevs2h.awk	/* -> /*- for license, minor formatting changes	2005-01-07 02:29:27 +00:00
pccarddevs2h.awk	/* -> /*- for license, minor formatting changes	2005-01-07 02:29:27 +00:00
usbdevs2h.awk	/* -> /*- for license, minor formatting changes	2005-01-07 02:29:27 +00:00
vnode_if.awk	Add SDT DTrace probes for VFS vnode operations in the vfs:vop	2009-03-29 03:30:15 +00:00