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Contents of /linuxsampler/trunk/ChangeLog

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Revision 791 - (show annotations) (download)
Sun Oct 16 14:50:20 2005 UTC (14 years, 2 months ago) by persson
File size: 5524 byte(s)
* Filter tuning: calculation of cutoff frequency and bandwidth
  improved. Removed use of "BasicBPFilter". Changed bandpass filter
  from constant peak to constant skirt. Use gig parameter Resonance if
  no resonance controller is set. Removed keyboard tracking influence
  on resonance.

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
14 * Gigasampler format engine:
15 - extensive synthesis optimization
16 (reimplementation of EGs and LFO(s), removed synthesis parameter
17 prerendering and the synthesis parameter matrix in general, splitting
18 each audio fragment into subfragments now where each subfragment uses
19 constant synthesis parameters - that is volume, pitch and filter
20 coefficients)
21 - fine tuning of the EG modulation parameters
22 - improved filter cutoff calculation by adding support for the
23 following gig parameters: Cutoff freq (used when no cutoff
24 controller is defined), Control invert, Minimum cutoff, Velocity
25 curve and Velocity range. The keyboard tracking now scales
26 cutoff frequency instead of resonance.
27 - filter fine tuning: calculation of cutoff frequency and
28 bandwidth improved. Removed use of "BasicBPFilter". Changed
29 bandpass filter from constant peak to constant skirt. Added
30 support for gig parameter Resonance.
31 - fixed bug in sysex handling (patch by Juan Linietsky)
32 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
33 which can be overridden with --enable-global-attenuation
34 - EG fixes: made the length of "attack hold" stage more
35 accurate. Release stage can now start before attack stage
36 ends. Cancel release didn't work when sustain was zero.
37
38
39 * LSCP server:
40 - fixed application exit on broken pipe error (fixes bug #20)
41
42 * MIDI driver:
43 - fixed legacy sysex code which caused dispatching of MIDI SysEx
44 messages several times instead of once
45
46 * general changes:
47 - support for muting sampler channels and solo mode of the same, two new
48 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
49 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
50 introduced for this, the behavior is the same like on a mixer console
51 (patch by Grigor Iliev, a bit adjusted). Also added configure option
52 --enable-process-muted-channels which can be used to enable the
53 processing of muted channels.
54 - support for sostenuto pedal
55 - support for monitoring the total number of active voices
56 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
57 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
58
59 Version 0.3.3 (15 July 2005)
60
61 * packaging changes:
62 - fixed compilation with gcc 4.0
63
64 * Gigasampler format engine:
65 - LFO preprocessing was performed even though the respective LFO was
66 disabled by the instrument patch (minor efficiency fix)
67 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
68 for volume ramp downs in the same fragment (needed for current voice
69 stealing implementation) then simply inform the user with a warning
70 about possible click sounds and reduce the volume ramp down
71 appropriately instead of cancelling the audio device connection
72
73 Version 0.3.2 (24 June 2005)
74
75 * packaging changes:
76 - updated autotools build files to compile on OS X
77 (conditional compilation of CoreMIDI and MidiShare drivers)
78 - hand-crafted assembly optimization code can be disabled with
79 './configure --disable-asm' (definitely not recommended)
80 - fixed 'make dist' rule to include all necessary files
81 - require automake (>= 1.5) for 'make -f Makefile.cvs'
82 (due to 'dist-bzip2' automake option)
83
84 * Gigasampler format engine:
85 - support for the gig parameters for "release velocity response" curves
86 - fine tuning of the EGADSR envelope
87 - volume of release triggered samples now depends on note-on velocity,
88 note length and gig parameter "release trigger decay" instead of
89 note-off velocity.
90 - revised voice stealing
91 (fixes crash and endless loop caused by voice stealing)
92 - don't reset scale tuning on instrument or audio output device change
93 - handle key group conflicts right at the beginning of each fragment
94 instead of when the respective voice is actually launched
95 (fixes undefined behavior if stolen voices belonged to a key group -
96 this case was followed by a "killed voice survived" error message)
97 - fixed minor issue with null/silence samples
98 (those stole voices even though they don't need a voice at all which
99 resulted in "voice stealing didn't work out" messages)
100 - don't reset volume, pan, pitch and MIDI controller values on
101 instrument or audio output device change
102
103 * LSCP server:
104 - fixed some crashes (patch by Grigor Iliev, fixes #19)
105 - fixed LSCP event "CHANNEL_INFO" notification
106 (e.g. did not notify on volume changes or MIDI program change events)
107
108 * linuxsampler application:
109 - added command line parameters --lscp-addr and --lscp-port to override
110 default IP address and port of LSCP server
111
112 Version 0.3.1 (24 May 2005)
113
114 * initial release

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