ACCURATE HD AUDIO CONVERTER SOFTWARE FOR STUDIO

•  music producer or audio engineer?
•  stream service owner or distributor of musical recordings?
•  music lover?

Do you care deeply about sound quality?

If so, AuI ConverteR is pro-audio software designed for you.

AuI ConverteR 48x44 is used to optimize audio file format for:

• Playback on:
  • audiophile portable digital audio players,
  • media servers,
  • computer audio,
  • hi-end car audio,
  • mobile phones,
  • other audiophile devices and software;
• Music production to:
  • file including into a DAW project,
  • music stuff preparation for further authoring in other software,
  • studio release preparation for distribution (download stores, radio, TV, soundtracks, etc.),
  • unify accurately file format and resolution for streaming services.

If you're proud of your recording studio, downloading store, streaming service, audiophile music collection, try for free AuI ConverteR right now:

AuI ConverteR is designed for the pro-audio market segment.

"Pro", "professional" means a secure use with minimum pitfalls.

You are just doing your job.

You needn't think about how well the converter works.

Its designers have already thought about it.

The main conversion aim is minimum impact on processed music. For audio-resolution changing, input and output should be the same as possible technically.

In instance, downsampling eliminates the high part of an audio spectrum. But the rest music data should be distorted minimally.

To avoid worrying about distortions for different conversion modes, conversion quality should be far beyond resolution requirements.

Conversion should be as "transparent" as possible.

An audio converter has number of conversion modes: input/output combinations of sampling rates, bit depths, DSD/PCM modulations.

AuI ConverteR contains individual resampling filters for each of combinations of input/output sampling rates.

AuI ConverteR contains
1125 resampling filters = 15 input x 15 output sampling rates x 5 filter modes [linear optimized, non-optimized, non-optimized wide, G5 optimized, minimum phase optimized].

For the best result, we carefully and manually minimize distortions as low as we're able for each of these filters individually.

It is more than 12 years of work and more than a hundred thousand experiments. And we continue the studies to find the best conversion ways.

Since the beginning of the Audiophile Inventory, 5 resampling filter generations were designed.

AuI ConverteR gives you several options for resampling characters (resampling filter modes). But, it is rather a matter of personal preferences than sound quality.

You are just converting music and don't need to worry about sound quality.

Read more about sound quality...

Resampling is a hard work for computers despite the apparent simplicity.

Conversion-time reduction is possible for more powerful computer's CPU.

First, we adjust sound quality (minimize distortions).

Conversion-time may be reduced, but always at the sacrifice of quality.

If we can, we reduce the time.

We provide some conversion types without limitations in the free version.

However, the project is live. Permanent research and development, tech support are needed.

Operating systems alter. The modern versions impose new requirements.

The current quality level is time-consuming, and demands great effort and in-depth knowledge.

All these things are not free.

Paid licenses are the only source of our project funding.

When you buy the AuI ConverteR license, you help our project to exist and develop.

Only price comparison with pro-audio converter software is relevant.
AuI ConverteR is far from the most expensive one in the pro-audio market segment.

Read what our customers say...

You can save budget

AuI ConverteR has options that allows purchase only converter abilities that you need. And, you can save budget...

Rapid assistance

Rapid replies to your inquries. Also, you can find answer your question in the online guide and explaining articles about audio.

No mandatory annual payments

NO mandatory annual payments.
For purchased or updated major-version numbers, PROduce-RD and Modula-R licenses have no special operating time limitations. Further operating system version incompatibility or others are probable.
Annual major updates (..., 7.x, 8.x, 9.x,...) are paid.
You can save budget of major update via Extra Warranty.

Read more about warranties...

AuI ConverteR is an multi-tool to tune your music library:

• DSF DFF FLAC WAV AIFF mp3 ... converter >
• Extractor of SACD ISO files >
• CD ripper >
• Metadata editor >

 

• AuI ConverteR is designed for people to whom sound quality is very important.
• The software is intended for top-level studio projects and audiophile applications.
• Easy-to-use graphical user inteface.

 

• Converted formats: DSF, DFF, SACD ISO, WAV, FLAC, AIFF, mp3, CAF, m4a (may contain ALAC, AAC), CUE-sheet with audio file, others ^[?]
  
• Sampling rate: up to DSD1024, PCM up to 1536 kHz/64-bit integer and float (depending on format and software configuration).
  
• Audiophile safe CD audio ripper (stereo)
  • safe (careful) reading audio data from CD with deep error control,
  • recovery-damaged-audio-data attempt,
  • autonomous multi-reading analysis of errors with byte precision without external database of checksums,
  • auto text metadata search in free Internet database and embedding it to ripped files,
  • manual assigning album artwork for ripped files before ripping (drag-n-drop or from file).
  • Visual CD Rip Error Display, including displaying of error location at a track timeline.

   

• Metadata editor DSF, FLAC, WAV, AIFF (performer, album, track names, artworks, other)
  • individual and group metadata editing,
  • embedding of a picture from a folder with source files to output files,
  • assigning album artwork for output files.
Export metadata from original to converted files.


 

• In research and development, audio distortions are under strict control.
• Own high-accurate 64-bit float sound technologies (resampling, dithering, true gapless conversion, processing of DSD audio files) for hi-res music files
• Each combination of input/output sampling rates has individual resampler. Each resampler is hand-adjusted to reach the best result we can.
• A sigma-delta (aka DSD) modulator might stop working because of level overload. In general, -6.0 dB output is recommended.
  AuI ConverteR has its own overload-tolerance improver. And, for higher -0.4 dB output, conversion is stable in most cases.
• Bit-perfect conversion mode. It is used to convert: ISO to DSF/DFF, between DFF and DSF, between lossless PCM audio files (WAV, FLAC, AIFF).
  The format is changed only. Binary audio content is kept. There is no changes in sample rate, bit depth, volume, click suppressing and any other audio processing.

 

• Extract SACD ISO with click suppression.
  
• True Gapless Conversion allows seamless album conversion like live concerts and operas without artifacts at track borders.
  
• Auto loudness normalization for better using of the dynamic range of your audio player/DAC.
  Peak level of output files is maximized without distortions. Or, average level is normalized for loudness equalization of song sequence.
  Manual loudness adjusting for both DSD (.dsf, .dff) and PCM (.wav, .flac, .aiff, .mp3, .m4a, ...) audio files.
  High-precision measurement of peak loudness and RMS level for target files.
  
• Stereo and multichannel conversion.
• Downmix 5.1/5.0 to 2.0 with several mixing modes for the sound by your taste.
  
• Copying of additional files with their subdirectories from source folder to target directory. It copies files that matched to filters in AuI ConverteR's settings.
• Search files to add to input file list for conversion.
  
• Show clipping numbers for converted files.
• Parallel multi-CPU batch conversion of several files for faster work.
  
• Windows 11, 10 (32-/64-bit/arm64 via emulation); Windows 8, 7 (32-/64-bit); Mac OS Ventura, Monterey, BigSur (Intel and Apple Silicon native support), Mac OS Catalina, Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks,...

See the background (noise floor) in the picture below. It is a tough case: conversion multibit PCM to DSD64. Lesser brightness of the background is better sound quality. In the ideal case, the slope bright line (signal) should be at the black background.
EXAMPLE:
Marker at the spectrogram show the noise level at the marker point (upper edge of audible range). Compare values: -155 and -137 dB. AuI ConverteR provides a noise floor at the marker point about 18 dB better.
 

Sound quality comparison: AuI ConverteR vs a converter (PCM 352.8 kHz to DSD64)

Sound quality comparison: AuI ConverteR vs a converter (DSD audio file resampling)

The darker background is lesser noise. Lesser noise means higher sound quality.

Sound quality comparison: AuI ConverteR vs a converter software (DSD64 to PCM 44.1 kHz aliases)

In an ideal case, should not be repeatable lines with lower brightness. These lines show distortions in the audible range, that correlate with the original signal.

To reduce audible distortions in some audio systems (equipment and software), audio optimization may be applied by user option.
Read more about our audio technologies >