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Desks Up!
Published in Dave Swallow, Live Audio, 2012
Bit depth is how accurately the waveform is measured during each sample and converted into digital data. Bit depth (word length) refers to the number of binary digits that are generated during each sample, such as 8 bit, 16 bit, or 24 bit. In a general term, this gives us the amount of binary digits available to store data. For example, an 8-bit code has 256 storage spaces, a 16-bit code 65,536 storage spaces, and a 24-bit code 4,294,967,296 storage spaces. In terms of colors, these are the amounts of different colors available in your color palette; thus the higher the bit depth, the more shades of color are available, and the transition through each shade becomes better and better. In terms of audio, this gives us a larger dynamic range; this means that the higher the bit depth, the more audio we can store before we run out of headroom and get distortion.
Software mixers
Published in Roey Izhaki, Mixing Audio, 2017
Most audio sequencers ship with dither capabilities. It might be an individual plugin, a global option, or part of the bounce dialog. In addition, more than a few plugins, notably limiters and loudness-maximizers, provide dither as well. Essentially, what the dither process does is add dither noise, then remove any information below the destination bit depth. Figure 11.11 shows a dither plugin. The plugin is loaded on the master track in Pro Tools to establish itself as the very last process (even after the master fader). We can see the typical dither parameters: destination bit depth and noise-shaping type. In this case, the plugin is preparing for a bounce onto a 16-bit file.
Mixing
Published in Mike Collins, Pro Tools for Music Production, 2012
Whenever you change the bit depth of digital recordings you need to apply dither to reduce quantization error that can become audible, particularly when fading low-level signals. Dither does this ‘trick’ by actually introducing very low-level random noise that, counter-intuitively, increases the apparent signal-to-noise ratio. Typically, you will apply dither if you are bouncing a mix to a file on disk that uses a lower bit depth than your session. Two plug-ins are supplied for this purpose with TDM systems – POW-r Dither and Dither.
A Simple but Efficient EEG Data Compression Algorithm for Neuromorphic Applications
Published in IETE Journal of Research, 2020
Geevarghese Titus, M. S. Sudhakar
It can be observed that the algorithm is invariant to the data representation format and the performance metrics are correlated to the bit depth only. The choice of optimal bit depth is based on trade-off between acceptable amount of distortion in the decompressed signal and CR. This value can be found out with visual inspection along with numerical values of the distortion metrics PRD, RMSE, PAE, MAE and PSNR.