AuI ConverteR 48x44

From Audiophile Inventory:

Professional high-precision audio sample rate converter for lossless files WAV, FLAC, AIFF. It's intended for professional sound production and for exact audiophiles.

Advantages. 1. Low losses of quality at conversion. Obtained as a result of numerous calculations and experiments, the unique algorithm of sampling rates conversion, used in Audiophile Inventory Converter 48x44, has allowed to reduce level of conversion noise (artefacts) to -140 dB (24-bit and more samples). That's below a theoretical limit of noises for 16-bit samples of compact disk (16 bits multiply at minus 6 dB/bit = -96 dB) and below noises analog-digital convertors of 24-bit sound cards (above then -120 dB). 2. Signal level automatic scaling (normalizing) at reduction of bit per sample (as example, input=24 to output=16 bit per sample). 3. Double precision (64-bit float) algorithms used for calculations. 4. Handling multichannel files.

Specification. 1. Format of input files (FLAC, not compressed WAV, AIFF) 1.1. Sampling rates - 44.1, 48, 88.2, 96, 176.4, 192 kHz. 1.2. The support of multichannel audio files - yes. 1.3. Bit per sample (for each channel) * FLAC, AIFF, WAV - 16, 24; * WAV - 32 float, 64 float. 2. Format of output files (FLAC, not compressed WAV, AIFF) 2.1. Sampling rates - 44.1, 48, 88.2, 96, 176.4, 192 kHz. 2.2. The amount of channels - as input file. 2.3. Bit per sample (for each channel) - select by user: * FLAC, AIFF, WAV - 16, 24; * WAV - 32 float, 64 float.

3. Level of conversion noise (artifacts) at 20...20500 Hz, better than: -147 dB. Remark: level noise of output file depends on bit per sample of input and output files. Level of conversion noise equal -140 dB is reached at bit per sample not less than 24 bits, or 32 and 64-bit float. 4. Dither - yes. 5. Multi-CPU and multicore-CPU support for batch converting - yes (only for PRO).