Curve Frame Header

Each curve frame contains a header with the following information.

Position

Description

0

Flag data (format and measurement info)

1

Flag data (format and measurement info)

2

Time stamp

3

Time stamp

4

Source amplitude in dB * 100

5

Highest value in dB * 100 (or data length)

6

RMS out in dB * 100

7

Noise reduction

8

Measured data points

 

The two 16-bit flag words contain information about the curve type and measurement conditions. When parsing this information, first determine the Curve Frame Format. This can be done by examining bits 10-12 of flag 0.

Curve Frame Format (Flag 0, Bits 10-12)

Bits 10-12 of flag 0 contain the curve frame format:

Value

Description

Data Points

0

Pure-tone response with distortion

64 plus 16

1

Standard composite

80

2

Audiometric

16

3

(reserved) [was Audiometric]

32

4

Variable length

Variable

 

The next two 16-bit words contain information on the date and time of the measurement. See the Time/Date format topic for more information on parsing this data.

Related Topics

Audiogram Curve Flags

Response Curve Flags