Hot answers tagged bit-depth
7
First of all, there is (edit: was) a potential terminology issue going on here. Please understand the following: Dithering noise is not something that exists, but something you can add to get rid of something that exists. That something is often called the quantization noise caused by rounding errors during the sampling or the conversion back from 24 bits to ...
7
Let me generally explain the use of bit resolutions.
24 bits is giving you a higher dynamic range: you can store audio information until a level of -144dB FS instead of -96dB FS in 16 bits. That is the quality improvement you get, so the precision in dynamic range improves. This is useful if your recorded material is too soft, and you want to increase the ...
5
This site has a decent table about what the standards are for different HD formats. In general, lower sample rates will have an lower frequency ceiling due to the Nyquist theory, but the average upper bound for human hearing is somewhere between 18k and 20k, so 48k should easily contain all the information necessary for human consumption. The only real ...
3
You are right!
The quality of the audio will be decreased if the volume lowered by software means. As you have correctly assumed, reducing volume in software is actually similar to reducing the bit depth.
Generally, every 6 dB of attenuation is equivalent to reducing the bit depth by one.
Brief explanation: Max volume level of your sound card output, ...
2
Pro Tools gives me the option of 16 bit or 24 bit. Is there a reason I shouldn't just always use 24-bit sessions to get the highest quality sound?
the short answer:
no. record and edit at 24 bit when 16 or 24 are your options.
the longer answer:
there are a few exceptional cases where it may be worth considering
disk space and/or disk speeds being ...
2
There isn't a single, simple answer for this question. This forum post explains:
You can estimate the approximate Audio information [1] content of FM by using the bandwidth and dynamic range. FM pretty much tops out at about 15K and the dynamic range is about 70db. Each bit represents approx 6db so we need just under 12 bits and a sampling rate of 30K.
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1
Yes, they are independent of the bitrate and they both directly affect the "quality" of a digital recording.
Sampling Rate
At a basic level, digital audio is recorded by approximating the positions of an audio signal over time. The Wikipedia article on sampling rate has a pretty good picture of how this works, which I'll link here:
You can see that the ...
1
Dithering adds amplitude to all the signals in a digital sample. It forces the lower level amplitude values up to the next threshold level. These new higher amplitude signals now represent the sum of the dither noise and the previously existing amplitude. The lower level bits are filled in with the dither noise and become the least significant bits (in terms ...
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