Download or playback these examples of sample rate conversions from BarbaBatch and some of its competitors and decide for yourself whether to laugh or cry. The results show differences so big you can actually SEE them.
The original file is a three second sinesweep, 16 bits 48 kHz. The sweep starts at 1000 Hz, goes up to 24 kHz, and is made with
Make A TestTone.
The resulting AIFF files below were only converted down to 44.1 kHz
Anything over 22k in the resulting file is aliasing and shouldn't be there. The result should be flat, and the filter should be steep as not to take away more high frequencies than necessary.
It takes about 2MB to load this page completely. If your software is not featured here, try doing this test yourself with Make A TestTone.
Screen dumps of the last .75 seconds of the resulting files
BarbaBatch 2.5
You will find no audible aliasing, while our output goes on all the way up to 22 kHz. Sparkling, accurate output.
Media Cleaner Pro 4.0 Media_Cleaner_4.aiff
This is what they tell you: "Cleaner Pro 4 produces substantially higher-quality results than past versions.[...]offers professional-quality resampling [...] uses a high quality sine downsample algorithm for the best results.
Bias Peak 2.0
Lots of aliasing, filter slope is too relaxed and starts too early.
Quicktime player
Lots of aliasing, runs way past 22k
SoundApp
ouch...
Digital Performer in quality mode "Best"
Quite clean, but gone too early.
Logic Audio 4.01
Loads of aliasing is what you get from this linear interpolating sample rate converter
Gallery software TurboMorph and SampleSearch
Another aliasing linear converter.
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| Download or playback these examples of sample rate conversions from BarbaBatch and some of its competitors and decide for yourself whether to laugh or cry. The results show differences so big you can actually SEE them.
The original file is a three second sinesweep, 16 bits 48 kHz. The sweep starts at 1000 Hz, goes up to 24 kHz, and is made with The resulting AIFF files below were only converted down to 44.1 kHz Anything over 22k in the resulting file is aliasing and shouldn't be there. The result should be flat, and the filter should be steep as not to take away more high frequencies than necessary. It takes about 2MB to load this page completely. If your software is not featured here, try doing this test yourself with Make A TestTone. |
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| Screen dumps of the last .75 seconds of the resulting files | |||||||||||||||||||||
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