FreeShaper
FreeShaper is a professional dithering and noise-shaping software instrument that features unparalleled power and flexibility within an intuitive interface.
FreeShaper can reduce audio word length from 32 bit floating point to 8, 16, 20 or 24 bit resolution. The amount of dithering can be user-defined using the Level parameter. The quantization distortion as well as the dither can be monitored separately using the Audition function. Added dither can be changed to a freely definable shape, and -- for the first time ever, you can freely change the width of the dither noise within the stereo panorama.
FreeShaper's large graphic display provides precise, independent control of all settings, and lets you easily visualize the output signal, dithering noise, and the frequency spectra of the noise floor. FreeShaper's flexibility facilitates the processing of all input material according to its specific characteristics, thus achieving optimal re-quantization, without granulation noise or audible coloration, with a linearity far below the least significant bit. This makes it fit perfectly with the processed audio material.