Teac GX-1, Инструкция по эксплуатации

Страница: 73 / 122

Specifications
4-6
■
File type
The GX-1 creates one binary-format data file and one ASCII-
format header file each time recording pauses or stops.
Data File: A binary file containing binary-format data through
A/D conversion. Each data file has the filename extension of
dat.
Header File:
A text file (ASCII code) containing recording
information such as conditions. Each header file has the file-
name extension of hdr.
• The data is stored in the DOS format on an MO, PC card, or
medium on a PC. On an AIT cartridge, however, the data is
stored in a TEAC unique format. To utilize the data on an
AIT, you can use GX Navi to copy the data as a TAFFmat
file to a PC, or use separate software GX View to read data
from a PC's external AIT drive.
• When voice memo is recorded in the BEFORE or AFTER
mode, a WAVE file is created in addition to a header and a
data file. The WAVE files can be opened in Windows Media
Player.
■
Filename
Within the same ID, the data file and header file have the same
filename, which begins with five alphanumeric characters and
is followed by a three-digit number.
The first five characters are entered in the Data Set Name field
in the New dialog box. You cannot use the \ / * ? < > | “ : and ;
characters. When 4 or fewer characters are entered, zeros (0)
are embedded between the filename and the 3-digit number to
give a total of 8 characters.
The three-digit number is the ID number beginning from 001.
When
File number auto increment
is selected in the New
dialog box, the ID number is automatically incremented when-
ever recording is restarted after a STOP (or after a pause). If
not selected when recording into the PC, the number begins
from 001 every time you start recording after a STOP. If, then,
the data file of the same name already exists, it is overwritten.
If the data file of the same name already exists when recording
on the removable medium, the data files are automatically num-
bered consecutively through the medium regardless of selecting
or not. When a new filename is given, the number automatical-
ly begins from 001.
File Formats
ch 1
ch 2
ch 3
ch 4
ch 5
ch 6
Voice data
1/5000 sec.
Order of data in data file
■
Data file
A-to-D converted data is stored as an two-byte integer ranging
from –32768 to +32767. Negative values are represented by
two’s-complement numbers.
The order of bytes is so called “Intel format”: the lower byte
first, and the upper last.*1
The order of data is INTERLACED format*2: the first chan-
nel of the first sampling, the second channel of the first sam-
pling, . . . , the last channel of the first sampling, the first chan-
nel of the second sampling, the second channel of the the sec-
ond sampling, and so on.
When voice memo is recorded in the MIX mode, the voice data
is appended to the last channel data of each sampling.
*1: The format in which the upper byte comes first and the
lower last is called “Motorola format,” and is adopted for
workstations and FFT analyzers with Motorola CPUs.
*2: In the SEQUENTIAL format, data is arranged in a differ-
ent order: the first channel of the first sampling, the first
channel of the second sampling, . . . , the first channel of the
last sampling, the second channel of the first sampling, the
second channel of the second sampling, and so on.
The following example shows how the data files are organized.
A block of data shown in the example is referred to as a scan.
A data file consists of repetitions of scans.
Example 1
The illustration below shows a scan of data recorded at a
sampling frequency of 5 kHz for channels 1 to 6 together
with voice data recorded in MIX mode.