TB Dither is a plugin designed to modify the bit depth of audio signals, for example when authoring a CD or for archival purposes, with minimum quality degradation. Such process typically involves dithering, quantization, and noise shaping. TB Dither supports industry-standard dithering noise types such as RPDF (rectangular probability density function, 1 LSB wide) and TPDF (triangular probability density function, 2 LSBs wide). A GPDF (Gaussian probability density function) is provided as well.
TB Dither's uniqueness lies in the flexibility to shape and minimize the audibility of noise inherently introduced by bit depth reduction. Instead of providing a very limited set of a few, fixed noise shaping curves, TB Dither allows you to design the spectrum of the quantization noise using familiar tools such as low-shelf, high-shelf and peaking filters, just as any equalizer! This provides an unprecedented ability to adjust quantization noise spectra according to the audio content, and envisioned reproduction system(s). If you can work with an EQ, you can work with TB Dither.
To get started, no less than 7 different noise shaping curves are provided and can be recalled from a menu, ranging from threshold-in-quiet curves, inverse dB(A) weighting, inverse ITU-R 468 curves, and several more.