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True Audio

 

The TTA lossless audio codec performs lossless compression on multichannel 8, 16 and 24-bit audio files. The term "lossless" refers to the fact that such compression results in literally no data or quality loss; when decompressed, the audio file data are bit-identical to those of their originals. Compression ratios achieved by the TTA codec vary, depending on music type, but range from 30% - 70% of the original. The TTA lossless compressed audio format supports both ID3v1 and ID3v2 information tags.

 

Sample Rate
Sample rate is the number of samples of audio carried per second, measured in Hz or kHz (1000 Hz). 44.1 kHz is the sampling rate of audio CDs and 48.0 kHz is commonly used for professional video. Higher sample rates result in higher quality audio with larger file sizes. Setting this to Auto will create an output file with the same sample rate as the input file. If the output file does not support the sample rate of the input file, Pro Audio Converter will use the greatest sample rate that is supported.

Bit Depth
Bit Depth defines the numer of bits (1's and 0's) used to represent each sample. By increasing the bit depth, quantization noise is reduced improving the signal to noise ratio. For each 1-bit increment in bit depth, the S/N will increase by 6dB. 24-bit digital audio has a theoretical maximum S/N of 144 dB, compared to 96 dB for 16-bit. Audio CDs use a bit depth of 16 bits. 24-bit is common in professional audio and video environments.