alice-teacher Fwd: help with importing sound

[Don Slater]

From Steve Cooper…


Begin forwarded message:

> From: Steve Cooper <coopers at cs.stanford.edu>
> Subject: Re: Fwd: alice-teacher help with importing sound
> Date: September 19, 2011 12:30:15 PM EDT
> To: Wanda Dann <wpdann at andrew.cmu.edu>
> Cc: Don Slater <dslater at andrew.cmu.edu>, Aik Min <aik_min at yahoo.com>
> Reply-To: coopers at cs.stanford.edu
> 
> I too am no expert in sound. But, I believe that this error message appears when there is something wrong in the header of a .wav or a .mp3 file. I think that opening up the sound file in something like audacity and then saving it back out again causes audacity to update the header information, and then Alice will play the sound correctly. I have no idea in what way the header file may be corrupted, but this is one of the errors that happens as a result.
> 
> Regards,
> Steve
> 
> On Mon, Sep 19, 2011 at 9:22 AM, Wanda Dann <wpdann at andrew.cmu.edu> wrote:
> My understanding is that a Wav file that has no codec is said to be "raw PCM".  
> This means it is totally uncompressed and may be a very large file. 
> 
> Some audio editors actually apply a codec to a Wav file (for example, mp3) 
> to make the file smaller.  In other words, some Wav files are actually mp3 files ... 
> which confuses the Java Playback Engine (the utility used in Alice 2.2 to play sound files).
> 
> Please note that I am not a sound engineer and I'm not sure I have
> explained this very well...
> 
> Wanda
> 
> 
> 
> 
> 
> On 9/19/2011 12:04 PM, Don Slater wrote:
>> 
>> Why would Alice want a PCM audio file?
>> 
>> Thanks,
>> Don
>> 
>> 
>> Begin forwarded message:
>> 
>>> From: P Mac <pmac at petaletal.org>
>>> Subject: Re: alice-teacher help with importing sound
>>> Date: September 18, 2011 7:16:39 PM EDT
>>> To: <alice-teachers at lists.andrew.cmu.edu>
>>> Reply-To: Alice educators <alice-teachers at lists.andrew.cmu.edu>
>>> 
>>> It appears the error message is asking that you use a PCM audio file instead of an MP3 or Wav file. If you want to use the the latter two audio files, you will need a MP3 or WAV to PCM converter to change them over to a PCM audio file. You may find one here: http://www.cnet.com/?tag=hdr
>>> 
>>> 
>>> > Date: Sat, 17 Sep 2011 15:42:21 -0700
>>> > From: fletcher at csusm.edu
>>> > To: alice-teachers at lists.andrew.cmu.edu
>>> > Subject: Re: alice-teacher help with importing sound
>>> > 
>>> > My work around has been to always just record the sound directly into
>>> > Alice - rather than import it.
>>> > Sound quality isn't as high as it might be - but it works as long as
>>> > computer has microphone.
>>> > 
>>> > > Hello All,
>>> > > I'm having a heck of a time trying to import sounds into Alice. I am
>>> > > following all the instructions I have read on websites but I keep getting
>>> > > this error message:
>>> > >
>>> > >
>>> > > Your sound file cannot be played in Alice.
>>> > > Please find an audio editor to convert the file to one with a PCM
>>> > > encoding.
>>> > > See the tutorial on converting sound files at our Alice website.
>>> > > Right click to clear the messages here.
>>> > >
>>> > >
>>> > > I have tried importing a wav file as well as an mp3 but I keep getting
>>> > > this
>>> > > error message. Anyone have any solutions?
>>> > >
>>> > >
>>> > > Cheers,
>>> > > Robert Carullo
>>> > > _______________________________________________
>>> > > alice-teachers mailing list
>>> > > alice-teachers at lists.andrew.cmu.edu
>>> > > https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers
>>> > >
>>> > 
>>> > 
>>> > 
>>> > _______________________________________________
>>> > alice-teachers mailing list
>>> > alice-teachers at lists.andrew.cmu.edu
>>> > https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers
>>> _______________________________________________
>>> alice-teachers mailing list
>>> alice-teachers at lists.andrew.cmu.edu
>>> https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers
>> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.andrew.cmu.edu/mailman/private/alice-teachers/attachments/20110919/2ab77e8a/attachment.html