Re: [Bluemusic-users] blue 2.6.0 Test 10
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Re: [Bluemusic-users] blue 2.6.0 Test 10
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From: Steven Yi <ste...@gm...> - 2016-07-23 03:20:46
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Hi Jan Jacob,
ALSA is reporting buffer underruns via PortAudio, which would cause
crackling sound. I think this is different from Menno's case with
parallel audio. You could try using a -b and -B setting, or may try a
different audio driver (such as alsa, pa_cb, or pa_bl).
For fades, I wrote this just now for the manual:
Audio clips can have fades enabled. Like Ardour, upon which much of
the audio layer system is based, all fades are crossfades. Clips will
crossfade with signals that are already in the bus, with the first clip
crossfading with silence. Fade types and durations may be set within
the clip's editor panel. The clip duration may be visually modified by
mousing over the clip, pressing with the mouse on either the fade-in or
fade-out handle that appears after mousing over the clip, then dragging
and releasing to update the fade's duration. The fade type may also be
modified by right clicking within a fade area and choosing the fade
type using the popup menu.
(The popup is something I just implemented.)
Hope that helps!
steven
On Fri, Jul 22, 2016 at 7:47 AM, Jan Jacob Hofmann
<jj...@so...> wrote:
> Dear Steven,
>
>
> I now tested Version 10 and I also found the cracklish sound even with
> one simple oscil opcode. I did not find the general setting for blue
> running at the linux-platform, else I might have liked to try another
> audio-unit after the messages I found at the csound output:
>
>
>
> [CommandlineRunner] - Began Exec(csound -+msg_color=false
> -+rtaudio=PortAudio -o dac -d -m135 -j1
> "/home/janjacobhofmann/Dokumente/blue/tempCsd6394376975807090893.csd").
> virtual_keyboard real time MIDI plugin for Csound
> 0dBFS level = 32768.0
> Csound version 6.02.0 (double samples) Jan 25 2014
> libsndfile-1.0.25
> UnifiedCSD:
> /home/janjacobhofmann/Dokumente/blue/tempCsd6394376975807090893.csd
> STARTING FILE
> Creating orchestra
> Creating score
> rtaudio: PortAudio module enabled ...
> using blocking interface
> rtmidi: ALSA Raw MIDI module enabled
> Elapsed time at end of orchestra compile: real: 0.002s, CPU: 0.002s
> sorting score ...
> ... done
> Elapsed time at end of score sort: real: 0.002s, CPU: 0.002s
> Csound version 6.02.0 (double samples) Jan 25 2014
> displays suppressed
> 0dBFS level = 1.0
> orch now loaded
> stdmode = 00000000 Linefd = 0
> audio buffered in 256 sample-frame blocks
> ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
> ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
> ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
> bt_audio_service_open: connect() failed: Connection refused (111)
> bt_audio_service_open: connect() failed: Connection refused (111)
> bt_audio_service_open: connect() failed: Connection refused (111)
> bt_audio_service_open: connect() failed: Connection refused (111)
> Cannot connect to server socket err = No such file or directory
> Cannot connect to server request channel
> jack server is not running or cannot be started
> PortAudio V19-devel (built Feb 25 2014 21:08:14)
> 0: dac0 (HDA Intel: ALC889A Analog (hw:0,0))
> 1: dac1 (HDA Intel: ALC889A Digital (hw:0,1))
> 2: dac2 (sysdefault)
> 3: dac3 (front)
> 4: dac4 (surround40)
> 5: dac5 (surround51)
> 6: dac6 (surround71)
> 7: dac7 (iec958)
> 8: dac8 (spdif)
> 9: dac9 (pulse)
> 10: dac10 (dmix)
> 11: dac11 (default)
> PortAudio: selected output device 'default'
> writing 512 sample blks of 64-bit floats to dac
> SECTION 1:
> new alloc for instr 3:
> new alloc for instr 4:
> ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred
> WARNING: Buffer underrun in real-time audio output
>
> (...) message gets repeated a hundred of times
>
>
> ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred
> WARNING: Buffer underrun in real-time audio output
> B 5.891 .. 7.891 T 7.891 TT 7.891 M: 0.07842 0.07842
> Score finished in csoundPerform().
> inactive allocs returned to freespace
> end of score. overall amps: 1.00000 1.00000
> overall samples out of range: 0 0
> 0 errors in performance
> Elapsed time at end of performance: real: 4.159s, CPU: 1.124s
> stdmode = 00000000 Linefd = 0
> closing device
> 1360 512 sample blks of 64-bit floats written to dac
> Ended Exec(csound -+msg_color=false -+rtaudio=PortAudio -o dac -d -m135
> -j1
> "/home/janjacobhofmann/Dokumente/blue/tempCsd6394376975807090893.csd" -L
> stdin).
>
>
> Anyway I could import and play a soundfile without problems (apart from
> the cracklishness) but still did not find out, how a fade is generated.
> Which is the was to apply one?
>
> All teh best,
>
> Jan Jacob
>
>
> Am 20.07.2016 um 05:47 schrieb Steven Yi:
>> Hi All,
>>
>> http://www.kunstmusik.com/blue_2.6.0_test10.zip
>>
>> I've just completed rewriting the fade processing code so that the
>> fades on audio clips crossfade with the contents of the bus. This
>> behavior should now match Ardour 4. For test 10, I have also adjusted
>> the visual rendering of the audio clips so that there is some
>> transparency even when an audio clip is not selected, making it easier
>> to see through when wave files overlap.
>>
>> In rewriting the fade code, I saw that there were some miscalculations
>> for the Fast and Slow envelopes when starting in the middle of an end
>> fade. I am planning to review that tomorrow as well as to implement
>> visual rendering of the different fades. (I just remembered I need to
>> add a popup menu for quickly modifying the fade type, which I will do
>> tomorrow as well.) I will be doing another audit of the code
>> tomorrow, but overall, I think that's what's left for AudioLayers for
>> this first release of the 2.6.x series.
>>
>> I will be looking at github issues and my emails to see what else I
>> can fit into this release. There will be at least one beta release
>> issued before the final will go out.
>>
>> Thanks!
>> steven
>>
>> ------------------------------------------------------------------------------
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>
>
> ------------------------------------------------------------------------------
> What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
> patterns at an interface-level. Reveals which users, apps, and protocols are
> consuming the most bandwidth. Provides multi-vendor support for NetFlow,
> J-Flow, sFlow and other flows. Make informed decisions using capacity planning
> reports.http://sdm.link/zohodev2dev
> _______________________________________________
> Bluemusic-users mailing list
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> https://lists.sourceforge.net/lists/listinfo/bluemusic-users
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