1 # OpenAL config file. Options that are not under a block or are under the
2 # [general] block are for general, non-backend-specific options. Blocks may
3 # appear multiple times, and duplicated options will take the last value
5 # The system-wide settings can be put in /etc/openal/alsoft.conf and user-
6 # specific override settings in ~/.alsoftrc.
7 # For Windows, these settings should go into %AppData%\alsoft.ini
8 # The environment variable ALSOFT_CONF can be used to specify another config
11 # Option and block names are case-insenstive. The supplied values are only
12 # hints and may not be honored (though generally it'll try to get as close as
13 # possible). Note: options that are left unset may default to app- or system-
14 # specified values. These are the current available settings:
17 # Sets the output channel configuration. If left unspecified, one will try to
18 # be detected from the system, and defaulting to stereo. The available values
19 # are: mono, stereo, quad, surround51, surround61, surround71
23 # Sets the output sample type. Currently, all mixing is done with 32-bit float
24 # and converted to the output sample type as needed. Available values are:
25 # int8 - signed 8-bit int
26 # uint8 - unsigned 8-bit int
27 # int16 - signed 16-bit int
28 # uint16 - unsigned 16-bit int
29 # int32 - signed 32-bit int
30 # uint32 - unsigned 32-bit int
31 # float32 - 32-bit float
32 #sample-type = float32
35 # Enables HRTF filters. These filters provide for better sound spatialization
36 # while using headphones. The default filter will only work when output is
37 # 44100hz stereo. While HRTF is active, the cf_level option is disabled.
38 # Default is disabled since stereo speaker output quality may suffer.
42 # Sets the crossfeed level for stereo output. Valid values are:
45 # 2 - Middle crossfeed
46 # 3 - High crossfeed (virtual speakers are closer to itself)
47 # 4 - Low easy crossfeed
48 # 5 - Middle easy crossfeed
49 # 6 - High easy crossfeed
50 # Users of headphones may want to try various settings. Has no effect on non-
55 # Sets the output frequency.
59 # Selects the resampler used when mixing sources. Valid values are:
60 # point - nearest sample, no interpolation
61 # linear - extrapolates samples using a linear slope between samples
62 # cubic - extrapolates samples using a Catmull-Rom spline
63 # Specifying other values will result in using the default (linear).
67 # Sets real-time priority for the mixing thread. Not all drivers may use this
68 # (eg. PortAudio) as they already control the priority of the mixing thread.
69 # 0 and negative values will disable it. Note that this may constitute a
70 # security risk since a real-time priority thread can indefinitely block
71 # normal-priority threads if it fails to wait. As such, the default is
76 # Sets the update period size, in frames. This is the number of frames needed
77 # for each mixing update.
81 # Sets the number of update periods. Higher values create a larger mix ahead,
82 # which helps protect against skips when the CPU is under load, but increases
83 # the delay between a sound getting mixed and being heard.
87 # Sets the maximum number of allocatable sources. Lower values may help for
88 # systems with apps that try to play more sounds than the CPU can handle.
92 # Sets whether to duplicate stereo sounds behind the listener. This provides a
93 # "fuller" playback quality for surround sound output modes, although each
94 # individual speaker will have a slight reduction in volume to compensate for
95 # the extra output speakers. True, yes, on, and non-0 values will duplicate
96 # stereo sources. 0 and anything else will cause stereo sounds to only play in
97 # front. This only has an effect when a suitable output format is used (ie.
98 # those that contain side and/or rear speakers).
102 # Sets the backend driver list order, comma-seperated. Unknown backends and
103 # duplicated names are ignored. Unlisted backends won't be considered for use
104 # unless the list is ended with a comma (eg. 'oss,' will list OSS first
105 # followed by all other available backends, while 'oss' will list OSS only).
106 # Backends prepended with - won't be available for use (eg. '-oss,' will allow
107 # all available backends except OSS). An empty list means the default.
108 #drivers = pulse,alsa,core,oss,solaris,sndio,mmdevapi,dsound,winmm,port,opensl,null,wave
111 # Sets which effects to exclude, preventing apps from using them. This can
112 # help for apps that try to use effects which are too CPU intensive for the
113 # system to handle. Available effects are: eaxreverb,reverb,echo,modulator,
118 # Sets the maximum number of Auxiliary Effect Slots an app can create. A slot
119 # can use a non-negligible amount of CPU time if an effect is set on it even
120 # if no sources are feeding it, so this may help when apps use more than the
125 # Sets the number of auxiliary sends per source. When not specified (default),
126 # it allows the app to request how many it wants. The maximum value currently
131 # Sets the virtual speaker layout. Values are specified in degrees, where 0 is
132 # straight in front, negative goes left, and positive goes right. Unspecified
133 # speakers will remain at their default positions (which are dependant on the
134 # output format). Available speakers are back-left(bl), side-left(sl), front-
135 # left(fl), front-center(fc), front-right(fr), side-right(sr), back-right(br),
136 # and back-center(bc).
140 # Channel-specific layouts may be specified to override the layout option. The
141 # same speakers as the layout option are available, and the default settings
143 #layout_STEREO = fl=-30, fr=30
144 #layout_QUAD = fl=-45, fr=45, bl=-135, br=135
145 #layout_51CHN = fl=-30, fr=30, fc=0, bl=-110, br=110
146 #layout_61CHN = fl=-30, fr=30, fc=0, sl=-90, sr=90, bc=180
147 #layout_71CHN = fl=-30, fr=30, fc=0, sl=-90, sr=90, bl=-150, br=150
150 # A reverb preset that applies by default to all sources on send 0
151 # (applications that set their own slots on send 0 will override this).
152 # Available presets are: Generic, PaddedCell, Room, Bathroom, Livingroom,
153 # Stoneroom, Auditorium, ConcertHall, Cave, Arena, Hangar, CarpetedHallway,
154 # Hallway, StoneCorridor, Alley, Forest, City, Moutains, Quarry, Plain,
155 # ParkingLot, SewerPipe, Underwater, Drugged, Dizzy, Psychotic. Optionally,
156 # the __ALSOFT_DEFAULT_REVERB env var may be set before running the app
161 # Generates a SIGTRAP signal when an ALC device error is generated, on systems
162 # that support it. This helps when debugging, while trying to find the cause
163 # of a device error. On Windows, a breakpoint exception is generated.
164 # Optionally, the __ALSOFT_TRAP_ALC_ERROR env var may be set before running
166 #trap-alc-error = false
169 # Generates a SIGTRAP signal when an AL context error is generated, on systems
170 # that support it. This helps when debugging, while trying to find the cause
171 # of a context error. On Windows, a breakpoint exception is generated.
172 # Optionally, the __ALSOFT_TRAP_AL_ERROR env var may be set before running the
174 #trap-al-error = false
177 ## Reverb effect stuff (includes EAX reverb)
182 # A global amplification for reverb output, expressed in decibels. The value
183 # is logarithmic, so +6 will be a scale of (approximately) 2x, +12 will be a
184 # scale of 4x, etc. Similarly, -6 will be about half, and -12 about 1/4th. A
185 # value of 0 means no change.
189 # Allows the standard reverb effect to be used in place of EAX reverb. EAX
190 # reverb processing is a bit more CPU intensive than standard, so this option
191 # allows a simpler effect to be used at the loss of some quality.
195 ## ALSA backend stuff
200 # Sets the device name for the default playback device.
204 # Sets the prefix used by the discovered (non-default) playback devices. This
205 # will be appended with "CARD=c,DEV=d", where c is the card id and d is the
206 # device index for the requested device name.
207 #device-prefix = plughw:
210 # Card- and device-specific prefixes may be used to override the device-prefix
211 # option. The option may specify the card id (eg, device-prefix-NVidia), or
212 # the card id and device index (eg, device-prefix-NVidia-0). The card id is
217 # Sets the device name for the default capture device.
221 # Sets the prefix used by the discovered (non-default) capture devices. This
222 # will be appended with "CARD=c,DEV=d", where c is the card id and d is the
223 # device number for the requested device name.
224 #capture-prefix = plughw:
227 # Card- and device-specific prefixes may be used to override the
228 # capture-prefix option. The option may specify the card id (eg,
229 # capture-prefix-NVidia), or the card id and device index (eg,
230 # capture-prefix-NVidia-0). The card id is case-sensitive.
234 # Sets whether to try using mmap mode (helps reduce latencies and CPU
235 # consumption). If mmap isn't available, it will automatically fall back to
236 # non-mmap mode. True, yes, on, and non-0 values will attempt to use mmap. 0
237 # and anything else will force mmap off.
246 # Sets the device name for OSS output.
250 # Sets the device name for OSS capture.
254 ## Solaris backend stuff
259 # Sets the device name for Solaris output.
263 ## MMDevApi backend stuff
268 ## DirectSound backend stuff
273 ## Windows Multimedia backend stuff
278 ## PortAudio backend stuff
283 # Sets the device index for output. Negative values will use the default as
284 # given by PortAudio itself.
288 # Sets the device index for capture. Negative values will use the default as
289 # given by PortAudio itself.
293 ## PulseAudio backend stuff
298 # Attempts to spawn a PulseAudio server when requesting to open a PulseAudio
299 # device. Note that some apps may open and probe all enumerated devices on
300 # startup, causing a server to spawn even if a PulseAudio device is not
301 # actually selected. Setting autospawn to false in Pulse's client.conf will
302 # still prevent autospawning even if this is set to true.
303 #spawn-server = false
306 ## Wave File Writer stuff
311 # Sets the filename of the wave file to write to. An empty name prevents the
312 # backend from opening, even when explicitly requested.
313 # THIS WILL OVERWRITE EXISTING FILES WITHOUT QUESTION!