Voxengo r8brain PRO

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r8brain PRO is a professional sample rate converter designed to deliver an unprecedented sample rate conversion (SRC) quality. Unlike many existing SRC algorithms available on the market, r8brain PRO implements sample rate conversion processing in its full: interpolation and decimation steps without exploiting any kind of simplifications; the signal is first resampled to a least common multiple sample rate which makes conversion perfect. In the core of the SRC algorithm, we use the convolution methods of our Pristine Space convolution processor which is known for its highly precise convolution processing. This gives us high sample rate conversion quality in combination with comparably small processing times: sample rate conversion without compromises!

Like many existing SRC programs, r8brain PRO offers you a linear-phase conversion mode. But more importantly, you also have an option of using the minimum-phase conversion mode, which finally brings SRC with true analog qualities to affordable digital audio workstations: in this mode, r8brain PRO works like an ideal digital-to-analog converter followed by an analog-to-digital converter to resample the audio. This eliminates pre-ringing associated with linear-phase designs, while introducing only a minimal amount of phase coloration.

r8brain PRO can read mono, stereo and multi-channel files in both WAV and AIFF file formats, creating 16-, 24- and 32-bit mono, stereo and multi-channel WAV files in fixed and floating point formats. EBU BWF (broadcasting) extensions, extensible wave format, sample loops and textual data residing inside the file are also supported. For the sake of convenience, r8brain PRO allows you to perform batch conversions in a convenient manner.

r8brain PRO's bit-depth conversion is limited to flat dithering. We have decided not to implement noise-shaping dithering because pro audio production software available on the market usually offers the user noise-shaping dithering of some kind already. We also based our decision on the fact that the sample rate conversion process often adjusts peak structure of the original program material, thus, in many cases, making a subsequent peak-limiting a necessity. To prevent output audio from clipping we have implemented a level normalization feature.

Features & Compatibility

  • Reads 8-, 16-, 24-, 32-bit PCM and IEEE files
  • Multi-channel file support
  • Linear- and minimum-phase modes
  • Supports all standard sample rates
  • Reads both WAV and AIFF files (AIFF are read-only)
  • Extensible wave format support
  • Batch support
  • Writes 16-, 24-, 32-bit PCM and IEEE WAV files
  • EBU BWF extensions support
  • Automatic normalization

Demo limitations

The demo version allows you to evaluate all the features of the software, but its conversion is limited to the first minute of an audio file.

The demo version does not support batch conversions. (Demo version is authorized with a product key, which is a text string - no challenge/response nor dongle required)

You may register to obtain either a Full or Light license of r8brain PRO. The Light version offers you a linear-phase conversion mode and up to 48 kHz output sample rates only while supporting all input sample rates. The Full version offers you all features of the software.

Compatibility

This software application is compatible with Windows (XP and later versions, 32- and 64-bit) computers (1 GHz or faster processor with at least 1 GB of system RAM recommended).

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