Topic: Converted file from 64000 to 44100...still sounds "fast"

[jasonw]

Whats going on here?  Never had this happen.

[PH]

why are you recording at 6400?

My guess is that you didn't actually resample the file, but just changed the sample rate.

[jasonw]

Its an old file so not really sure how it got that way.  In Adobe Audition 2.0 I did "Edit > Convert Sample Type > 44100 & 16bit"

Nothing changed.

[PH]

sounds like the original file might be corrupted, or it might be at another sample rate instead of 64k.
I would guess that it's actually 48k file, maybe try another program with that file and see if it still shows up at 64k.
Haven't ever encountered such a thing as a file changing sample rates on it's own.

[jasonw]

It shows up in audacity as 44k & 16bit.  Still slow. 

[pontiacb]

I had something similar when I recorded digital in on my iRiver from optical out my Sky+ satellite receiver.  In Audacity it said 64000 Hz in sample rate and sounded much too fast (may have been 66000 Hz can't remember) but I knew it was a 48 KHz output.  So I changed the sample rate associated with the wav file in Audacity to the correct 48000 Hz (using the little drop down box to the left of the wave file) and with the project sample rate at 44.1 kHz exported the wave to downsample it and the resultant wave was fine.  

Suggest you try going back to the original file and try the same thing and hopefully it will sort your problem.

[Brian Skalinder]

Your subject line says the file plays too fast, yet in another post you say it's too slow.  Is the original file playing too slow, or too fast? 

Try following the instructions in this post - you only want to change the WAV header sample rate value, not actually resample / perform sample rate conversion on the data itself.  If the file doesn't sound the proper speed, either <a> you've not actually succeeded in changing the WAV header sample rate, or <b> even though the WAV header sample rate has changed, it's still different from the sample rate of the data.

[jasonw]

Your subject line says the file plays too fast, yet in another post you say it's too slow.  Is the original file playing too slow, or too fast? 

Try following the instructions in this post - you only want to change the WAV header sample rate value, not actually resample / perform sample rate conversion on the data itself.  If the file doesn't sound the proper speed, either <a> you've not actually succeeded in changing the WAV header sample rate, or <b> even though the WAV header sample rate has changed, it's still different from the sample rate of the data.

sorry for the confusion but the original is fast and the one that I "edited" is still fast.  Going to have to play around some more with it to see whats up.

[TNJazz]

try 32K

We had this happen recently with a mismatched digital path that was 32k on one device and 96k on the other.

[heath]

i play with sample rate/speed quite a bit.  If i want to half my playback speed, I simply open a 96k file in a 48k session.  The program asks if I want to convert the file to the session rate.  I say no, and play it back in a 48k session.  Presto! I'm playing at half speed. 

[SmokinJoe]

I've had that happen before.  The data is OK, but the wave file header information is messed up.  If that's the case, you've got data at 44.1, but the header says it's something else.  Bottom line is that you don't want to "convert" anything to a different speed, because it's already correct, you just want to fix the header.  The way I've done it is to just strip the raw data out, and replace the header with a proper one.  How do you do that on your computer with your software?  I dunno.  Below is how I do it on my Linux box.  DIfferent software, but I think that is the concept you want.

If you get totally frustrated, PM me... I can try to fix the file for you.

Solution: strip the wave file header, and replace it with a good one
1) Strip header: shntool cat -nh broken_input_file.wav > temp.raw
2) Replace header: sox -t raw -w -c 2 -s -r 44100 temp.raw fixed_output_file.wav

Notes: cat -nh means "no header"
          sox -t raw means type raw
                -w means 16bit words
                -c 2 means 2 channels
                -s means signed data
                -r 44100 means

~~~~~~~~~~~~~~ HERE'S YOUR ANSWER RIGHT HERE~~~~~~~~~~~~~
http://taperssection.com/index.php/topic,80888.0.html

[Brian Skalinder]

FYI, a new WAV header sample rate utility, gleaned from a broader posting Teddy made elsewhere:  http://www.audiosignal.co.uk/Resources/changerate.zip

Haven't tried it, but perhaps it's easier than using your favorite audio editor.