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Contents of /linuxsampler/trunk/ChangeLog

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Revision 832 - (show annotations) (download)
Sun Feb 5 10:24:05 2006 UTC (13 years, 10 months ago) by persson
File size: 6704 byte(s)
* added smoothing of volume changes caused by control change messages
* fine tuning of the crossfade volume curve

1 Version CVS HEAD (?)
2
3 * packaging changes:
4 - install necessary development header files for allowing 3rd party
5 applications to link against liblinuxsampler
6 - liblinuxsampler's API documentation can be generated with 'make docs'
7 (Doxygen required)
8 - added benchmark to automatically detect the best triangle LFO
9 implementation (currently either an integer math solution or a
10 di-harmonic approximation), automatic detection can be overriden
11 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
12 configure script argument though (mandatory for cross-compilation)
13 - do not automatically pick optimized gcc flags if the user already
14 provided some on his own (as CXXFLAGS)
15
16 * Gigasampler format engine:
17 - extensive synthesis optimization
18 (reimplementation of EGs and LFO(s), removed synthesis parameter
19 prerendering and the synthesis parameter matrix in general, splitting
20 each audio fragment into subfragments now where each subfragment uses
21 constant pitch and filter coefficients. The volume coefficient is
22 linearly interpolated inside a subfragment, unless
23 --disable-interpolate-volume is set.)
24 - fine tuning of the EG modulation parameters
25 - improved filter cutoff calculation by adding support for the
26 following gig parameters: Cutoff freq (used when no cutoff
27 controller is defined), Control invert, Minimum cutoff, Velocity
28 curve and Velocity range. The keyboard tracking now scales
29 cutoff frequency instead of resonance.
30 - filter fine tuning: calculation of cutoff frequency and
31 bandwidth improved. Removed use of "BasicBPFilter". Changed
32 bandpass filter from constant peak to constant skirt. Added
33 support for gig parameter Resonance.
34 - fixed bug in sysex handling (patch by Juan Linietsky)
35 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
36 which can be overridden with --enable-global-attenuation
37 - EG fixes: made the length of "attack hold" stage more
38 accurate. Release stage can now start before attack stage
39 ends. Cancel release didn't work when sustain was zero. Attack
40 time now has a minimal value to prevent clicks.
41 - fixed pitch changes larger than one octave
42 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
43 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
44 all modes can be altered via standard GM messages, that is CC5 for
45 altering portamento time, CC65 for enabling / disabling portamento
46 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
47 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
48 parameter) and crossfade
49 - added support for the "attenuation controller threshold" gig
50 parameter
51 - added smoothing of volume changes caused by control change
52 messages
53
54 * LSCP server:
55 - fixed application exit on broken pipe error (fixes bug #20)
56 - fixed the notification messages delay due to lack of
57 network activity (fixes bug #26)
58 - fixed parser bug which occured on space(s) within device parameters
59 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
60
61 * MIDI driver:
62 - fixed legacy sysex code which caused dispatching of MIDI SysEx
63 messages several times instead of once
64
65 * general changes:
66 - support for muting sampler channels and solo mode of the same, two new
67 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
68 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
69 introduced for this, the behavior is the same like on a mixer console
70 (patch by Grigor Iliev, a bit adjusted). Also added configure option
71 --enable-process-muted-channels which can be used to enable the
72 processing of muted channels.
73 - support for sostenuto pedal
74 - support for monitoring the total number of active voices
75 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
76 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
77
78 Version 0.3.3 (15 July 2005)
79
80 * packaging changes:
81 - fixed compilation with gcc 4.0
82
83 * Gigasampler format engine:
84 - LFO preprocessing was performed even though the respective LFO was
85 disabled by the instrument patch (minor efficiency fix)
86 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
87 for volume ramp downs in the same fragment (needed for current voice
88 stealing implementation) then simply inform the user with a warning
89 about possible click sounds and reduce the volume ramp down
90 appropriately instead of cancelling the audio device connection
91
92 Version 0.3.2 (24 June 2005)
93
94 * packaging changes:
95 - updated autotools build files to compile on OS X
96 (conditional compilation of CoreMIDI and MidiShare drivers)
97 - hand-crafted assembly optimization code can be disabled with
98 './configure --disable-asm' (definitely not recommended)
99 - fixed 'make dist' rule to include all necessary files
100 - require automake (>= 1.5) for 'make -f Makefile.cvs'
101 (due to 'dist-bzip2' automake option)
102
103 * Gigasampler format engine:
104 - support for the gig parameters for "release velocity response" curves
105 - fine tuning of the EGADSR envelope
106 - volume of release triggered samples now depends on note-on velocity,
107 note length and gig parameter "release trigger decay" instead of
108 note-off velocity.
109 - revised voice stealing
110 (fixes crash and endless loop caused by voice stealing)
111 - don't reset scale tuning on instrument or audio output device change
112 - handle key group conflicts right at the beginning of each fragment
113 instead of when the respective voice is actually launched
114 (fixes undefined behavior if stolen voices belonged to a key group -
115 this case was followed by a "killed voice survived" error message)
116 - fixed minor issue with null/silence samples
117 (those stole voices even though they don't need a voice at all which
118 resulted in "voice stealing didn't work out" messages)
119 - don't reset volume, pan, pitch and MIDI controller values on
120 instrument or audio output device change
121
122 * LSCP server:
123 - fixed some crashes (patch by Grigor Iliev, fixes #19)
124 - fixed LSCP event "CHANNEL_INFO" notification
125 (e.g. did not notify on volume changes or MIDI program change events)
126
127 * linuxsampler application:
128 - added command line parameters --lscp-addr and --lscp-port to override
129 default IP address and port of LSCP server
130
131 Version 0.3.1 (24 May 2005)
132
133 * initial release

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