acknowledgements for ansi/nist-itl 1-2011 - NIST Visual Image ...

ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSIONoooooChanges to the bit depth should be logged in Field 98.900: Audit log / ALF orField 11.902: Annotation information / ANN audit logs. Common values forBIT are 8, 16, 24, and 32 bits.The fourth information item (endian code / ENDC) is mandatory and indicateswhich byte goes first for digital samples containing two or more bytes. Thevalues for ENDC are 0=big, 1=little, or 2=native endian. (ENDC is optional andignored for digital samples that do not contain two or more integer multiples ofbytes.)The fifth information item (fixed point indicator / FPNT) is mandatory andindicates the digital sample representation. The value is 0 if the digital samplesare represented as fixed-point or 1 if the samples are floating-point.The sixth information item (channel count / CHC) is mandatory and gives theinteger number of channels of data represented in the digital voice data file. Thenumber of channels must be between 1 and 99, inclusive. Common values forCHC are 1 and 2 channels.The seventh information item (external codec reference code / ECOD) onlyappears if CODC = 1. It contains the 'reference code' from the table of codecsavailable at http://www.nist.gov/itl/iad/ig/ansi_standard.cfm.The eighth information item (comments / COM) is an optional, unrestrictedtext string of up to 4000 characters in length. It can contain additionalinformation about the codec or additional instructions for reconstruction ofaudio output from the stored digital data. Codec parameters shall be specified inthis information item when required for unambiguous decoding. This itemshould include a description of any noise reduction processing or equalizationthat must be applied to faithfully render the voice recording.8.11.15 Field 11.015: Premliminary signal quality / PSQoooThis field is optional and gives an assessment of the general “quality” of thevoice recording. There may be as many as 9 PSQ subfields for the audio fileto indicate different types of quality assessments.The first information item (quality value / QVU) is mandatory if this field isused and shall indicate the general quality as an integer value between 0 (lowquality) and 100 (high quality). A value of 255 indicates that quality was notassessed.A second information item, an algorithm vendor identification / QAV, ismandatory if this field is used and shall specify the ID of the vendor of thequality assessment algorithm used to calculate the quality score. This 4-digithex value (See Section 5.5 Character types ) is assigned by IBIA andexpressed as four characters. The IBIA maintains the Vendor Registry ofCBEFF Biometric Organizations that map the value in this field to a registeredorganization. For algorithms not registered with the IBIA, the value of 0x00shall be used.A third information item, algorithm product identification / QAP, is250