olemus
ISO/IEC 19794:
vajalik bittide arv
andmeeelemendi või andmikuparameetri esituseks
= number of bits used to represent a data element,
the number of bits used to represent a data record parameter

ISO/IEC 23002 (MPEG):
täisarvväärtuse esituseks vajalik bittide arv
= amount of data used to represent the value of an integer quantity (expressed in bits)

ISO 19262:
diskreettasemete maksimaalarv kahe astmena,
signaali intensiivsuse digiteeritud esituseks
= maximum number of discrete levels available for the digitized representation of the signal intensity, represented as a power of two

näiteid
https://en.wikipedia.org/wiki/Color_depth

https://en.wikipedia.org/wiki/Audio_bit_depth

https://2.bp.blogspot.com/-NQPXItfa_Og/VJ_5VBeHv3I/AAAAAAAAAgA/Ct9Ae_UW6E0/s1600/bitdepths_chart_med.jpg

https://www.projectorcentral.com/images/articles/Fig1-BitDepthValues-600.jpg

https://etc.usf.edu/techease/win/images/what-is-bit-depth/

https://photography.tutsplus.com/articles/bit-depth-explained-in-depth--photo-8514

https://www.soundguys.com/audio-bit-depth-explained-23706/