Bit Depth
Definition
The number of bits used to represent each audio sample in a digital audio system. 16-bit is the CD standard, 24-bit is the professional recording and mixing standard, and 32-bit float is used for internal DAW processing. Bit depth determines the theoretical dynamic range of the audio signal.
Context
Each additional bit of depth adds approximately 6dB of dynamic range. 16-bit audio provides ~96dB of dynamic range, while 24-bit provides ~144dB. Recording at 24-bit is standard practice as it provides ample headroom and low noise floor. When delivering final masters at 16-bit (for CD or certain streaming formats), Dithering should be applied to preserve detail.
Community Perspective
cian riordan (2022-06-30)
“You shouldn’t [record at 32-bit float from a 24-bit interface]. 24 bits is an insane amount of head room to begin with.”
Adam Thein clarified: “If you are tracking 32-bit float from an interface that only captures 24 bit you are basically wasting hard drive space. Unless you have specifically purchased a 32-bit depth recording device or interface then use 24.”
The community consensus is clear: 24-bit is the professional standard for recording. 32-bit float is valuable for internal DAW processing but provides no benefit at the capture stage with standard converters.
Related Terms
See Also
Source Discussions
Discord Source
Channel: recording-talk Matches: 53 (shared with Sample Rate discussions) Key contributors: cian riordan, Adam Thein