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Author Topic: How To Fix Sample Rate? (iRiver recorded in 44100Hz but saved as 8000Hz)  (Read 4297 times)

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Offline Neilyboy

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I do not know what happened but for some reason my iRiver H110 kinda goofed on me this weekend. I was recording a Backyard Tire Fire show and the dang thing recorded the first set fine. The recorder turned itself off after inactivity during the break. I then turned it back on and recorded the second set as usual.

Well I get home and look and the first set is fine totally normal but the second set shows up as a seven and a half hour file at a rate of 8000Hz. So I know all the data is there. It possibly has corrupted header information or something. The question is how to fix it?

I have tried everything in audacity. I have tried just changing the rate from 8000Hz to 44100Hz on the file itself. This works somewhat but results in skipping and such.. I have tried the trick of importing two files (one that is 44100 first - setting the project sample rate to 44100 then importing my 8000Hz file) This just produces a seven and a half hour recording at 44100Hz at a whopping 4.31GB (still playing really slow and sounds like Halloween music)..

What program should I be using or what is the best way to go about fixing this issue?

Any help is much appreciated!! Thanks so much
Neil

« Last Edit: August 31, 2009, 09:02:16 AM by Neilyboy »
Mic's: AKG C214's, Line Audio CM3, AT4041SP, AT853 (C, SC, O), AT943 (C, H)
Pre's: Sound Devices MixPre 2
Rec's: Sony PCM-M10, Edirol R-44, Tascam DR60D MKii, Tascam DR70D x 2

Offline Neilyboy

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Re: How To Fix Sample Rate (iRiver recorded in 44100Hz but saved as 8000Hz)
« Reply #1 on: August 31, 2009, 08:55:37 AM »
hahaha I guess I just had to give up on audacity.. I went ahead and did a little searching.. found this program.

http://www.mega-nerd.com/libsndfile/

Here is the command I ran:

libsndfile>sndfile-convert.exe -override-sample-rate=44100 set02.wav set02fix.wav

Looks like its playing fine now!! Very awesome program to have around so I will keep this thread here for future reference.

Take care,
Neil
Mic's: AKG C214's, Line Audio CM3, AT4041SP, AT853 (C, SC, O), AT943 (C, H)
Pre's: Sound Devices MixPre 2
Rec's: Sony PCM-M10, Edirol R-44, Tascam DR60D MKii, Tascam DR70D x 2

Offline Neilyboy

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hmm well shoot looks like there is still some skipping.. dang it.. Probably have a corrupted file i guess... good thing ctfshjohn ran a patch off me haha.. If anyone else has other ideas please let me know..

Neil
Mic's: AKG C214's, Line Audio CM3, AT4041SP, AT853 (C, SC, O), AT943 (C, H)
Pre's: Sound Devices MixPre 2
Rec's: Sony PCM-M10, Edirol R-44, Tascam DR60D MKii, Tascam DR70D x 2

Offline Husker Du

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Neumann KM150->SD MixPre->Edirol R-44

Offline Neilyboy

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thank you for the link man! I have not tried it but I will for sure! I will let ya know how it goes
neil
Mic's: AKG C214's, Line Audio CM3, AT4041SP, AT853 (C, SC, O), AT943 (C, H)
Pre's: Sound Devices MixPre 2
Rec's: Sony PCM-M10, Edirol R-44, Tascam DR60D MKii, Tascam DR70D x 2

Offline JasonSobel

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r8brain will resample the data to a different sample rate, which you don't want to do.  all you need to do is fix the header to tell the file that it's at 44.1 kHz, without actually resampling any of the data.
although it seems like that is what you did initially, here's another program to try out:
http://taperssection.com/index.php/topic,72936.0.html


edit to add:
here's another good thread to read about this problem.
http://taperssection.com/index.php/topic,80888.0.html

Offline taperj

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A quick google brought me to this... not sure if it would help..

http://www.nick-andrew.net/projects/wav-fixer/

I'd run it on a copy if anything.

J
Rig: Neumann skm184 or Neumann skm140 > Sound Devices Mixpre > Olympus LS-10 or Korg MR-1

Just ask the axis, he knows everything.

Offline Neilyboy

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well r8brain didnt work but the wav fixer here http://taperssection.com/index.php/topic,72936.0.html is exactly what i needed. looks like the recording had other issues as well though as there are still spots where it just goes from nothing to about a half a second into the song.. not sure what caused that though. Oh well ill just get with ctfshjohn and see if I can get his patched copy. Thanks for all the help guys..

Neil
« Last Edit: August 31, 2009, 01:24:13 PM by Neilyboy »
Mic's: AKG C214's, Line Audio CM3, AT4041SP, AT853 (C, SC, O), AT943 (C, H)
Pre's: Sound Devices MixPre 2
Rec's: Sony PCM-M10, Edirol R-44, Tascam DR60D MKii, Tascam DR70D x 2

 

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