bugGNU Octave - Bugs: bug #47603, audio distorted

 
 

bug #47603: audio distorted

Submitter:  None
Submitted:  Sat 02 Apr 2016 12:39:18 AM UTC
   
 
Category:  Libraries Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Inaccurate Result
Status:  Works For Me Assigned to:  None
Originator Name:  Originator Email:  -email is unavailable-
Open/Closed:  * Closed Release:  * dev
Operating System:  * Microsoft Windows Fixed Release:  None
Planned Release:  None
* Mandatory Fields

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Tue 19 Apr 2016 10:54:14 PM UTC, comment #5: 

No response to requests for more information and testing, closing report.

Mike Miller <mtmiller>
Group Member
Sun 03 Apr 2016 05:09:01 AM UTC, comment #4: 

The full list of audio devices on your system may be relevant also. You may want to use a different device than the default device detected by portaudio. See the audiodevinfo function.

Mike Miller <mtmiller>
Group Member
Sun 03 Apr 2016 05:06:01 AM UTC, comment #3: 

Can you paste the exact set of commands you used on the bug tracker here? Can you attach the recorded audio signal showing the distortion here?

Example:


>> r = audiorecorder (16000, 16, 2);
>> record (r, 10);
## wait 10 seconds
>> y = getaudiodata (r);
>> size (y)
ans =

   160000        2

>> save audio.dat y


Mike Miller <mtmiller>
Group Member
Sun 03 Apr 2016 02:31:17 AM UTC, comment #2: 

I created audiorecorder object, recorded audio for 10 seconds and saved it. I recorded audio using Windows sound recorder for the same test. Played both on VLC and they sound different. Waveform indicates Octave recording has some clipping and hiss but Windows recording has no clipping or hiss. Octave may be disabling automatic gain control or quality adjustments on the microphone, or getting data from hardware directly instead of the Windows microphone API. Octave 4.0.1+ on Windows 10.

Anonymous
Sat 02 Apr 2016 04:22:41 PM UTC, comment #1: 

Thanks for the bug report. Can you provide more details, which version of Octave you are using, which version of Windows, exactly what you tried and what you observed?

Mike Miller <mtmiller>
Group Member
Sat 02 Apr 2016 12:39:18 AM UTC, original submission:  

Audio is very distorted in recording and playback. There is a loud static hiss in octave but not in sndrec32. Same hardware, sampling rate. Recording settings for Octave may need to be tweaked.

Anonymous

 

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  • -email is unavailable- added by mtmiller (Posted a comment)
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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-04-19 mtmiller StatusNeed Info Works For Me
        Open/ClosedOpen Closed
    2016-04-02 mtmiller CategoryNone Libraries
        Item GroupNone Inaccurate Result
        StatusNone Need Info

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