-
Notifications
You must be signed in to change notification settings - Fork 4
/
mt32-pi.cfg
341 lines (306 loc) · 11 KB
/
mt32-pi.cfg
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
# ________ _______ __
# __ /_____ `. /____ `. /__`
# ____ ____ __/ /____ _______) / ______) / ____ ______ __
# / __ v __ `./__ _____//_____ < / _____. /____// ___ `. / /
# / / / / / / / /____ _______) // /______ / /____/ // .__
# /__/ /__/ /__/ \______//_________. /_________/ / ______. \____/
# /////////////////////////////////////////////////////// / / //// /// // /
# ```
# mt32-pi.cfg: mt32-pi configuration file.
# Default options are marked with an asterisk (*).
# -----------------------------------------------------------------------------
# System options
# -----------------------------------------------------------------------------
[system]
# Set the default synthesizer to be made active on startup.
#
# If the default synthesizer is unavailable (e.g. missing ROMs or SoundFonts),
# the first working synth is made active.
#
# Values: mt32*, soundfont
#
# mt32: Use mt32emu (Munt) for Roland MT-32 emulation
# soundfont: Use FluidSynth for SoundFont synthesis
default_synth = mt32
# Enable or disable support for USB devices.
#
# Disable this to speed up boot time if you are not using any USB devices.
#
# Values: on*, off
usb = off
# Set the I2C baud rate/clock speed for all peripherals (Hz).
#
# Most peripherals will work fine at the default speed (400KHz "fast mode"),
# but larger LCD/OLED displays (e.g. 4-line I2C HD44780 and 64 pixel high
# SSD1306) won't be able to refresh at 60FPS at the default setting.
#
# Try increasing this value to 1000000 (1MHz) for a smoother LCD refresh rate.
# If your display doesn't work, try backing off the speed 100KHz at a time
# until it does.
#
# Values: 100000-1000000 (400000*)
i2c_baud_rate = 400000
# Set the timeout for power saving mode (seconds).
#
# After the specified number of seconds of silence, the CPU clock speed will be
# reduced, the audio device will be stopped, and and the LCD's backlight will
# be turned off to save energy (certain I2C displays only).
#
# Any MIDI activity will instantly bring the system out of power saving mode.
#
# If set to 0, power saving mode is disabled.
#
# Values: 0-3600 (300*)
power_save_timeout = 300
# -----------------------------------------------------------------------------
# MIDI options
# -----------------------------------------------------------------------------
[midi]
# Set the baud rate used for GPIO MIDI.
#
# For connecting to standard MIDI devices (i.e. via DIN cable), this should be
# left at the default rate of 31250.
#
# For connecting to PCs, set this to match the baud rate of the other host.
# SoftMPU's serial MIDI mode, for example, uses a baud rate of 38400.
#
# Values: 300-4000000 (31250*)
gpio_baud_rate = 31250
# Enable or disable software "MIDI thru" on the GPIO Tx pin.
#
# When enabled, all data received via the GPIO Rx pin will be re-transmitted
# verbatim on the Tx pin. This may be useful for debugging or for passing MIDI
# data through to another synth.
#
# Values: on, off*
gpio_thru = off
# -----------------------------------------------------------------------------
# Audio options
# -----------------------------------------------------------------------------
[audio]
# Select audio output device.
#
# Values: pwm*, i2s
#
# pwm: Use the headphone jack
# i2s: Use an I2S DAC
output_device = i2s
# Sample rate of audio output (Hz).
#
# mt32emu uses an internal sample rate of 32000Hz (just like the real hardware)
# which is then resampled to this value.
#
# FluidSynth renders at this sample rate directly.
#
# Values: 32000-192000 (48000*)
sample_rate = 48000
# Set audio rendering chunk size (samples).
#
# A single stereo frame of audio has two samples, and so this value is double
# the number of frames per chunk.
# The smaller the chunk size, the lower the latency, but too low a value will
# cause underruns (distortion artifacts).
#
# Latency is a function of chunk size and sample rate, for example:
# 256 samples / 2 channels / 48000Hz * 1000ms = 2.67ms of latency.
# See documentation for recommended values for various Raspberry Pi models.
#
# The minimum value varies depending on audio output device.
# For PWM, the minimum is 2, for I2S the minimum is 32.
#
# Values: 2-2048 (256*)
chunk_size = 256
# Set address (hexadecimal) of I2C DAC control interface.
#
# This will be used for the initialization sequence (see below) if enabled.
# You can find the address of your DAC by using the i2cdetect utility in Linux.
#
# Values: 00-80 (4c*)
i2c_dac_address = 4c
# Select an initialization sequence for the DAC.
#
# Some DACs require some initialization commands to be sent via I2C before they
# will produce any sound.
#
# Values: none*, pcm51xx
#
# pcm51xx: for DACs based on PCM5121 or similar (e.g. PCM5141, PCM5242)
i2c_dac_init = pcm51xx
# -----------------------------------------------------------------------------
# Control options
# -----------------------------------------------------------------------------
[control]
# Set the physical control scheme.
#
# See documentation for GPIO pinouts/wiring details.
#
# Values: none*, simple_buttons, simple_encoder
#
# none: No physical controls
# simple_buttons: Simple 4-button scheme
# simple_encoder: Simple 2-button + rotary encoder scheme
scheme = simple_encoder
# Set the rotary encoder type (if used by control scheme).
#
# Different rotary encoders may complete different fractions of a Gray-code
# cycle per detent ("click").
#
# If four clicks are needed for a single movement, try "quarter".
# If two clicks are needed for a single movement, try "half".
#
# Values: quarter, half, full*
encoder_type = full
# Enable or disable the I2C MiSTer control interface.
#
# If using mt32-pi with a MiSTer FPGA system and custom hardware to interface
# with MiSTer's User Port, enable this option to allow controlling mt32-pi via
# the MiSTer's on-screen display.
#
# Values: on, off*
mister = off
# Set the timeout for switching SoundFonts (seconds).
#
# When switching SoundFonts using the physical button, there is a short delay
# before loading begins. This option allows you to set the number of seconds to
# wait before loading.
#
# Values: 0-3600 (3*)
switch_timeout = 3
# -----------------------------------------------------------------------------
# MT-32 emulator options
# -----------------------------------------------------------------------------
[mt32emu]
# Set gain factor applied to synthesizer output channels.
#
# This is independent of the master volume that can be set via MIDI SysEx or
# the volume knob.
#
# Values: 0.0-256.0 (1.0*)
gain = 1.0
# Set gain factor applied to reverb wet output channels.
#
# Values: 0.0-infinity (1.0*)
reverb_gain = 1.0
# Select quality level for the resampler.
#
# If set to none, audio output will sound wrong unless you set the sample rate
# option to 32000Hz, which is the MT-32's native sample rate.
#
# Values: none, fastest, fast, good*, best
resampler_quality = good
# Select initial MIDI channel assignment.
#
# The MT-32 uses an unusual MIDI channel assignment by default. On a real MT-32
# this is set using a button combination. Use this option to change the initial
# channel assignment on startup.
#
# Values: standard*, alternate
#
# standard: Parts 1-8 = MIDI channels 2-9, Rhythm part = MIDI channel 10
# alternate: Parts 1-8 = MIDI channels 1-8, Rhythm part = MIDI channel 10
midi_channels = standard
# Select initial ROM set to use.
#
# If multiple ROM sets are available, this option determines which set to use
# on startup. If the ROM set specified here is unavailable, the first available
# set is used instead.
#
# Values: old*, new, cm32l
rom_set = old
# -----------------------------------------------------------------------------
# SoundFont synthesizer options
# -----------------------------------------------------------------------------
[fluidsynth]
# Set the initial SoundFont to use.
#
# If multiple SoundFonts are available, this option determines which SoundFont
# to use on startup.
#
# On startup, the "soundfonts" directory is scanned for valid SoundFonts, which
# are added to a list and sorted into alphabetical order.
#
# This setting is a zero-indexed offset into that list (i.e. 0 is the first,
# 1, is the second, and so on).
#
# If the index specified is unavailable, the first available SoundFont will be
# used.
#
# Values: 0-255 (0*)
soundfont = 0
# Set the master volume gain.
#
# The default is a low value to avoid clipping when many notes are playing at
# once.
#
# The value should be a decimal value between 0.0 and 10.0. Values outside this
# range will be clamped.
#
# Values: 0.0-10.0 (0.2*)
gain = 0.2
# Set the maximum number of voices that can be played simultaneously.
#
# Depending on the complexity of your SoundFont, you may need to reduce this
# value to prevent audio buffer underruns (distortion) when playing music
# featuring lots of notes being played at once.
#
# On the other hand, Raspberry Pi 4 users may want to try raising this value as
# it has a more powerful CPU.
#
# N.B. larger file size of the SoundFont does not imply higher CPU usage.
# SoundFonts that use more real-time effects (modulators) are more likely to
# require a reduction in polyphony.
#
# Values: 1-65535 (256*)
polyphony = 256
# -----------------------------------------------------------------------------
# LCD/OLED display options
# -----------------------------------------------------------------------------
[lcd]
# Select LCD driver.
#
# Note that LCDs connected via I2C, you must also set the correct address for
# your device via the i2c_lcd_address option. Consult its datasheet, or see
# our documentation for tested models and their configurations.
#
# Values: none*, hd44780_4bit, hd44780_i2c, sh1106_i2c, ssd1306_i2c
#
# none: No LCD
# hd44780_4bit: Hitachi HD44780 or compatible (e.g. WS0010, RS0010) character
# LCD connected to GPIO pins in 4-bit mode (see documentation for
# pinout)
# hd44780_i2c: As above, but using an I2C "backpack"
# sh1106_i2c: Small I2C-based OLED graphical display (usually 1.3")
# ssd1306_i2c: Small I2C-based OLED graphical display (usually 0.96")
type = ssd1306_i2c
# Set the width of the LCD.
#
# If the display is a character display, this value is measured in characters.
# Otherwise, for a graphical display, this is measured in pixels.
#
# Note that not all dimension settings are valid; see documentation for valid
# configurations for each LCD driver.
#
# Values: 20-128 (128*)
width = 128
# Set the height of the LCD.
#
# Same characters vs. pixels considerations as for width.
#
# Values: 2-64 (32*)
height = 32
# Set address (hexadecimal) of I2C LCD.
#
# This will be used to communicate with LCDs connected via the I2C bus.
#
# Values: 00-80 (3c*)
i2c_lcd_address = 3c
# Rotate the display output (graphical LCDs only).
#
# Some graphical displays support rotation. Use this option if you need to turn
# the display around.
#
# Values: normal*, inverted
#
# normal: No rotation
# inverted: The display output is upside down
rotation = inverted