Peak Pro 5 Testimonial

"Everyone who knows me knows how much I love Peak. It's an environment that makes me feel really creative."

— Composer/Producer BT

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Peak Pro 5™ —
Sample rate converter comparison with other audio applications.

You Resample

You've spent countless hours editing and tweaking your audio down to the perfect mix, using all the best processing tools and of course your ears to make it sound great. You picked the perfect microphones, carefully edited the best takes together, and spent hours finding the right EQ and compressor settings. It sounds great, and now you need to deliver it in the format your client or project requires.

More often than not, delivering your project will require resampling, also known as sample rate converting. For example, if your project was done with a sample rate of 96kHz and you need to deliver a Redbook Audio CD, which is 44.1kHz, you'll need to resample. Resampling is often the last step and is of critical importance to the sound quality of your finished project. Would you trust all your hard work to just any application's resampler, without knowing how well it performs the job? You shouldn't.

What happened?

When you use a resampler that does a poor job of processing your audio, your ears will be the first to tell you something has gone wrong. Audio engineer jargon "jitter, aliasing, distortion, and rounding errors" all amount to audible problems that sound like someone put your audio through a bad EQ setting, or distorted the high end of the audio (cymbals, 's' and 't' consonants, etc).

How a Supercomputer Resamples

High quality resampling performed by a computer has historically required an extraordinary amount of power. With a supercomputer like Apple's G5 or G4, this task is now realistic. The G4 can calculate a billion floating-point calculations per second, and the G5 can calculate more than 9 times that amount.

Peak Pro 5 - High Quality Resampling Redefined

The BIAS Peak Pro 5 Sample Rate Conversion algorithm is capable of performing the billions of calculations required to ensure that resampling is done at maximum precision. Result? One of the very best resampling algorithms in the industry

We recently tested 12 audio software applications, including BIAS Peak Pro 5, to determine what their resampling algorithms were actually doing to the audio. As you can see by our findings, BIAS Peak Pro 5's resampler sets a new standard for high quality resampling. For your next audio project, trust Peak Pro 5 - your ears, and those of your audience, will be glad you did.

Download the full analysis here.

Reproducing Our Test Results

Below is all the material you need to download in order to reproduce our tests:

1) Matlab scripts that perform the same spectral analysis and data display we have performed in our tests:

Instructions:

Put these three files in the same folder on your computer. Edit SpectrogramAnalysis.m and set the name of the sound file to analyze. Execute the following command in Matlab, in order to plot the spectrogram:

>>SpectrogramAnalysis

2) Test Signals: