View Issue Details

IDProjectCategoryView StatusLast Update
0000918ardourbugspublic2008-11-20 23:43
ReporterScottHelmke Assigned Topaul  
PrioritynormalSeverityminorReproducibilityalways
Status closedResolutionfixed 
Summary0000918: (0.9beta27) Import 24-bit .wav files - they appear as silence
DescriptionTrying to import some 4-channel, 24-bit .wav files (created with arecord). Sometimes the audition in the import dialogue causes a segmentation fault crash, but otherwise just plays silence. When files are imported and dragged into Ardor tracks, only silence (flat-line waveform) appears.

Tested with 16 and 32 bit .wav files with no problems, audio imports perfectly.
Additional InformationFedora Core 1, CCRMA, just ran apt-get update/upgrade to get 0.9beta27.
TagsNo tags attached.

Activities

paul

2005-03-03 18:29

administrator   ~0002071

created with arecord? hahaha!

ok, seriously, run sndfile-info on the files, and also try sndfile-play to see if that can play them.

ScottHelmke

2005-03-04 13:51

reporter   ~0002074

Here's the output from sndfile-info:


Version : libsndfile-1.0.11

========================================
File : test24.wav
Length : 2489804
RIFF : 2489796
WAVE
fmt : 16
  Format : 0x1 => WAVE_FORMAT_PCM
  Channels : 4
  Sample Rate : 44100
  Block Align : 16

Invalid file generated by Syntrillium's Cooledit!
Treating as WAVE_FORMAT_IEEE_FLOAT 32 bit floating point file.

  Bit Width : 24 (should be 32)
  Bytes/sec : 705600
data : 2489760
End

----------------------------------------
Sample Rate : 44100
Frames : 155610
Channels : 4
Format : 0x00010006
Sections : 1
Seekable : TRUE
Duration : 00:00:03.528
Signal Max : 2.35099e-38 (-752.57 dB)


So anyway, obviously something not right. I realize that there are newer better recording tools than arecord, but I was on the spot in a session and went back to the old standby. At least aplay can play back those files, so at worst I'm in for an analog transfer.

paul

2005-03-07 12:57

administrator   ~0002086

i am marking this "resolved" but it really needs to be reported to the ALSA mantis system as well. its a disaster that arecord/aplay try to implement their own code for reading/writing audio files, and this is just one manifestation of that.

Issue History

Date Modified Username Field Change
2005-03-03 15:45 ScottHelmke New Issue
2005-03-03 15:45 ScottHelmke E-mail => scott@scotthelmke.com
2005-03-03 15:45 ScottHelmke Name => Scott Helmke
2005-03-03 18:29 paul Note Added: 0002071
2005-03-03 18:29 paul Status new => feedback
2005-03-04 13:51 ScottHelmke Note Added: 0002074
2005-03-07 12:57 paul Status feedback => resolved
2005-03-07 12:57 paul Resolution open => fixed
2005-03-07 12:57 paul Assigned To => paul
2005-03-07 12:57 paul Note Added: 0002086
2008-11-20 23:43 seablade Status resolved => closed