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Gear / Technical Help => Post-Processing, Computer / Streaming / Internet Devices & Related Activity => Topic started by: pepper on July 15, 2009, 08:37:27 AM

Title: 24bit to 16bit
Post by: pepper on July 15, 2009, 08:37:27 AM

I recently bought and edirol r09-hr and recorded a show in 24 bit.Ive since been trying to downsample it to 16bit,and used 8brainto do this .I opened the 24bit wav and this is what i have now after converting the file in 8brain and importing the converted file into gspot.Im pretty new,so patience would be appreciated. :)

(http://img.photobucket.com/albums/v137/plymboy/Untitled-1.jpg)

Title: Re: 24bit to 16bit
Post by: Brian Skalinder on July 15, 2009, 09:38:37 AM

Looks like you have a 16-bit, 44.1k file.  Odd that gspot doesn't show the bit-depth.  But we can derive it from the Bitrate field.

Bitrate = bit depth * sample rate * # of channels

Gspot shows bitrate of 1,411,000 (1,411 kb/s), sample rate of 44,100, and 2 channels (stereo).  So...

1,411,000 = bit depth * 44100 * 2

Solve for bit depth.  1,411,000 / 44,100 / 2 = 15.99*

* Close enough! The result in this calculation isn't quite 16 because Gspot isn't precise in its display of bitrate.  The actual bitrate for 16/44 is 1,411,200, but Gspot displays it simply as 1,411 kbs, or 1,411,000.

Title: Re: 24bit to 16bit
Post by: pepper on July 15, 2009, 10:03:32 AM

So this is fine?

Title: Re: 24bit to 16bit
Post by: Brian Skalinder on July 15, 2009, 10:22:36 AM

Quote from: pepper on July 15, 2009, 10:03:32 AM

So this is fine?

If your goal was to have a 16-bit, 44.1 kHz WAV file (CD format), yes.

Title: Re: 24bit to 16bit
Post by: pepper on July 15, 2009, 10:26:56 AM

Thank you brian,us newbies( to newer technology ) need all the help we can get. :D

Title: Re: 24bit to 16bit
Post by: acidjack on July 17, 2009, 02:03:15 PM

Quote from: pepper on July 15, 2009, 10:26:56 AM

Thank you brian,us newbies( to newer technology ) need all the help we can get. :D

I don't know what you're using for general editing, but you can also do this very easily in Audacity by setting the "Project Rate" to 44.1 and then, when you export, setting the export rate to 16bit.