CVS commit: src/sys/dev

["Nathanial Sloss" <nat%netbsd.org@localhost>]

Module Name:    src
Committed By:   nat
Date:           Sat May 27 10:54:47 UTC 2017

Modified Files:
        src/sys/dev: audiobell.c
Added Files:
        src/sys/dev: audiobelldata.h

Log Message:
The audio bell is now in 16 bit slinear format.

It is possible to use a frequency of 44.1 kHz as apposed to 8 kHz if
you specifiy:

options HIRES_BELL

in your kernel config file.

Changes to the way in which the wave is generated help reducing pops and
ticks in the bell.

The output of the high resolution bell has been tested extensively using
frequency spectographs generated by pkgsrc package audio/audacity.

This addresses PR kern/51784.


To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/audiobell.c
cvs rdiff -u -r0 -r1.1 src/sys/dev/audiobelldata.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.