How to Convert Audio Files

Every year volume of downloadable audiophile audio are growing.

At our home we amass a vast audio libraries.

We need converting music formats and resolution for:

- compatibility with DAC and players,

- curtailing hard disk or disk storage space occupied music

- other.

How to convert audio files with minimum quality loss?

First claim to file format converter software are clear sound and minimum distortions.

Audiophile ( pro ) converting tools on the market has:

- low level of distortions,

- embedded dithering,

- minimum phase filter.

Dithering - method of audio purity improvement for 16 bit resolution converting.

Minimum phase filter (Analog mode) (of sample rate conversion) - sound cause noise for digital sample frequency conversion. Primarily you listen the (pre-sound) noise. After some milliseconds you hear sound. Conversion tool in this mode efficiently fix the pre-sound noise.

But high qualitative audio converters have some troubles :

1. Limited number of built-in output file formats

2. Noise of shifted ultrasound

3. Starting on Mac OS X hardware via Win software emulator

Restricted number of built-in output formats - HD downloadable audio files have format (FLAC, WAV, AIFF). As rule high resolution and professional utilities for conversion support a limited range of output formats. Don't supported formats wma, mp3, alac and other (used for qualitative mobile audio gears: car and portable systems). Required additional manual conversion of file with changed bit resolution and sample rate to final format.

User of AuI Converter 48x44 able add necessary output file format. Third-parties encoders can be connected via command line.

Noise of shifted ultrasound: imperfection of audio apparatus cause ultarsound become audible as noise. Especially it might appear during playback high resolution at high loudness power.

AuI Converter 48x44 suppress the noise.

Runing on Mac with Windows emulation software - many engineers and audiophiles use Mac. Some high resolution audio conversion converters has Windows version only.

AuI Converter 48x44 software has Mac OS X version.

Which can offers HD audio tools for resolution ( sample rate and bit depth) converting of lossless files with user friendly interface?

Audio file converter AuI ConverteR 48x44

Read more about AuI ConverteR 48x44

About AuI ConverteR 48x44

Special design for HD converting of lossless files WAV, FLAC, AIFF:

- 64-bit float internal sound processing;

- conversion noise below noise of 24-bit quantisation;

- dithering for improving of purity 16 bit converting (16 bit to 24 bit/32 bit, 24 bit/32 bit to 16 bit, 16 bit to 16 bit);

- sample frequency converting without pre-ringing at output. Like to analog audio processing (minimum phase filter mode);

- sample rate converting without phase distortions. Fine for such instruments as drums, piano, guitar (linear phase filter mode).

Removing noise of shifted ultrasound simultaneously with sampling frequency conversion algorithm alphaC.

User customization of output files formats : after audio resolution conversion automatically launching encoders via command line by third-parties developers. You can connect your encoder utilities off one's own bat.

Video: Audio converter for audiophile music

Roland Krammer
Crayon Audio GmbH
Republic of Austria,
uses
AuI ConverteR 48x44
since 2012

...we use AuI ConverteR 48x44 software, so that we can provide right examples...

...The dither generated music data that sounded more fine then the original...

"We do develop and built high end HiFi devices like integrated amplifier, power amplifier, phono preamplifier, pre amplfier, cd-player and audio streamer. We attach particular importance to maximum spatial resolution, but avoid the typical harshness sound in semiconductor amplifiers and digital equipment. ...

Since our CD player can play FLAC encoded files up to 96KS, we use AuI ConverteR 48x44 software, so that we can provide right examples. ..."

"...After many attempts to get my music data in the correct format, I discovered the positive characteristics of the dither function of AuI. I converted different music samples with dither. Burned the data with and without dither on CD and show this also to my colleagues in my branch. There was not one among them who could say something different as I'm. The original and the with the dither function converted samples sounded different.

The dither generated music data that sounded more fine then the original. The attacks in side instruments had more dynamic. The space was more clear. A decaying sound was to be heard longer, right down to the quietest passages. The whole sound had gained. But frequency analyzes indicated no difference, although you can hear differences. ..."

Steve Freedman,
USA,
uses
AuI ConverteR 48x44
since 2014

I just upsampled Little Feat, "Waiting for Colombus," 1978 MSFL to 384 and all I can say is, WOW!!!...

"I just upsampled Little Feat, "Waiting for Colombus," 1978 MSFL to 384 and all I can say is, WOW!!! Such a wonderful product you make... and on my droid it sounds great as well.. Thanks Yuri! Audiophile Inventory rocks!!!!!"

Martin Klaiss,
Germany,
uses
AuI ConverteR 48x44
since 2015

The cd ripper works perfect...the music played without any dropouts...

"The cd ripper works perfect, yesterday i ripped a old cd that with other cd ripping software could not correct ripped, but by your software its perfect the music played without any dropouts."

Simon Pang,
Music lover
from Hong Kong,
uses
AuI ConverteR 48x44
since 2015

...Finally, I have chosen AuI ConverteR, simply because I find the sound quality of the files converted by it is better than the other softwares that I have tried...

"When I searched on the web to find software for converting my collections of DSF files to WAV or FLAC files to fit for my equipment setup, I found AUI ConverteR and some other softwares.

Before deciding to go for which one, I had compared the sound quality of the WAV files converted by these softwares. Finally, I have chosen AuI ConverteR, simply because I find the sound quality of the files converted by it is better than the other softwares that I have tried. In addition, it is also a nice experience to feedback my suggestions to the AUI developer for improvement and fixing issues. He always responds friendly and quickly.

I hope to continue to use it happily for my various conversion projects."

David Roush,
USA,
uses
AuI ConverteR 48x44
since 2014

...AuI was one of the few converters that had the options I wanted, especially 32 bit...

"I have spent a lot of money building a stereo system including a water-cooled media server. I have several thousand CDs that I am ripping. There is a big difference in sound quality between lossless uncompressed files (WAV) and lossless compressed files (WMA). I started with WMA due to the difference in file size compared to WAV. In the past, data storage was not inexpensive and 2 TB discs were the maximukm size you could buy. Now storage is getting cheaper and 4TB hard drives are becoming common. Now I am looking into converting the files to WAV.

It is becoming apparent that 32 bit is the way of the future, so no sense in buying software that does not handle 32 bit (same with a DAC). The AuI was one of the few converters that had the options I wanted, especially 32 bit.

About communication with Audiophile Inventory's team: Excellent and immediate responses."

Emil Serafino,
USA,
uses
AuI ConverteR 48x44
since 2014

...So I find myself using Aul ConverteR all the time for multiple audio needs...

"Infact I stumbled across your software while looking for a DSF to PCM converter for Windows before the RD version ever came out. I could only find Open Source Linux and Mac Software, one without a GUI and another with a very suspect one.
Best part about it is, IMO it is a superior sample rate and format converter than using my wave editor... So I find myself using Aul ConverteR all the time for multiple audio needs.
AuI ConverteR is an invaluable tool for converting my ... (1-bit HD audio disks [AuI's remark]) to lossless PCM WAV/AIFF or FLAC format so they can be interpreted by my non ... (1-bit HD audio [AuI's remark]) compatible ... 24/192 portable DAC and ... Headphone Amp for enjoying audiophile grade sound on the go."

Andrew Kruchinov,
music lover
Russia,
uses
AuI ConverteR 48x44
since 2013

...In previous versions there were "bugs" that the program developer fix fairly quickly...

"I'm experienced music lover. Thus I prefer possible most qualitative of available formats.
   With the variety of free and paid converters for hi-res lossless files, high qualitive ones is unitary.

    I use AuI ConverteR 48x44 almost a year. In previous versions there were "bugs" that the program developer fix fairly quickly. What does the author's desire to constantly improve the software.
    All statements on the official website and the features of the software corresponds to the actual results obtained.

    Currently AuI ConverteR 48x44 is a priority program for converting of files. Especially for high-resolution audio.

    From my own experience I recommend use the software for all music lovers and interested professionals."

Hans Daudey
Netherlands,
uses
AuI ConverteR 48x44 pro
since 2011

...With a few mouse clicks I convert a directory map of flacs to a submap with converted files...

"I use the AuI ConverteR 48x44 pro for the conversion of 192 khz / 24 bits flac files from ... to 96kHz / 24 bits flacs which are required for my ... (audio card [AuI's remark]). I use the default settings. With a few mouse clicks I convert a directory map of flacs to a submap with converted files. "

Sergey Bobrov
Russia,
uses
AuI ConverteR 48x44
since 2013

...Audiophile Inventory willingly and promptly responds to requests about found shortcomings...

"AuI ConverteR 48x44 software is a unique tool. I like its quality of audio processing more than many well-known professional software products.

Audiophile Inventory willingly and promptly responds to requests about found shortcomings. Very quickly and efficiently fix it in newer versions."

AuI ConverteR 48x44

WARNING: Modula-R modules are NOT compatible with integrated editions (including Free).
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DOWNLOAD FREE for WINDOWS DOWNLOAD FREE for MAC OS	ORDER NOW for WINDOWS ORDER NOW for MAC OS	CONFIGURE ORDER for WINDOWS CONFIGURE ORDER for MAC OS
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Detailed comparison

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Functionality	FREE DOWNLOAD FREE for WINDOWS DOWNLOAD FREE for MAC OS	PROduce-RD $249.8* ORDER NOW for WINDOWS ORDER NOW for MAC OS
Output DSF/DFF D64/128/256/512/1024	2 sec silence in middle file ≥ 3 min
Input DSF, DFF, ISO	2 sec silence in middle file ≥ 3 min D64/128/256/512/1024	1-bit 2.8(D64) ... 45.2(D1024) MHz
True Gapless Conversion (seamless album conversion)	2 sec silence in middle file ≥ 3 min
FLAC/AIFF 32 bit
Lossless formats WAV, FLAC, AIF, AIFF, AIFF/sowt, m4a (ALAC), APE
Lossy formats mp3, WMA, m4a, mp4, ogg and more
CD ripper with deep error control, recovering attempt of damaged data	1 track
CD ripper with displaying errors at track timeline	1 track
CD риппер получает информацию об альбоме на CD из бесплатной интернет-базы данных
Input CUE + file
Support meta tags (album and track name, artist, etc.)		Редактор метаданных DSF, FLAC, WAV, AIFF
Batch processing of group of files	2 sec silence in middle output file: - from 2nd file for PCM to PCM, - from 1st file for all other	Multiple files in parallel
Multichannel files (more 2 channels)	output ≤ 3 min
Downmix 5.1 to stereo
Auto peak level maximazing for album (relative level differences between tracks are kept)
Manual output volume adjust
Inverting phase audio
Sample rates 352, 384 kHz	WAV, AIFF, FLAC,...	WAV, AIFF, FLAC,...
Sample rates 705, 768 kHz	WAV, AIFF	WAV, AIFF
Sample rates 22, 44, 48, 88, 96, 176, 192 kHz
Bit depth of input files: 16, 24, 32 (wav), 64 integer and 32, 64 float point
Bit depth of output files:
16 and 24 bit
32 bit (wav)
32 bit (float point)
64 bit and 64 bit (float point)
*alphaC* resampling and bit-depth conversion algorithm by Audiophile Inventory
*alphaD* dithering algorithm by Audiophile Inventory
Audio processing 64-bit float point (double precision)
External audio format converters of files (download codec by demand, user can add AuI ConverteR compatible codec)	9 only
Extensible WAV format (sampler notes, BWF - Broadcast Wave Format)
WAV 64-bit (RF64) format (size more 2 gigabyte)
Search files by sample rate, bit depth, format
No pre-ringing distortions (minimum phase resampling filter)
Launch via command line
Possible start more one instance of application simultaneously
Additional skins, editing and creating custom skins (amount)		10
Commercial using
*Extra Warranty*

* All prices at this page in the U.S. dollars without V.A.T. and other applicable taxes. The prices are recommended.