HARK Document Version 2.2.0. (Revision: 7981) : SaveFeatures

6.4.7 SaveFeatures

6.4.7.1 Outline of the node

This node saves feature vectors in files.

6.4.7.2 Necessary file

No files are required.

6.4.7.3 Usage

When to use

This node is used to save acoustic features such as MFCC and MSLS.

Typical connection

$\includegraphics[width=100mm]{fig/modules/SaveFeatures}$

Figure 6.76: Connection example of SaveFeatures

6.4.7.4 Input-output and property of the node

Table 6.66: Parameter list of SaveFeatures

Parameter name	Type	Default value	Unit	Description
BASENAME	`string`			Prefix of file name when saving

Input

FEATURES: : Map<int, ObjectRef> type. The value is a feature vector (Vector<float> ).
SOURCES: : Vector<ObjectRef> type. This input is optional.

Output

OUTPUT: : Map<int, ObjectRef> type.

Parameter

BASENAME: : string type. Prefix of a file name when saving. An ID of SOURCES is given after Prefix and features are stored when saving.

6.4.7.5 Details of the node

Feature vectors are saved. In terms of file format, vector elements are saved in 32-bit floating-point number format in IEEE 758 little endian. As for the naming rule, an ID number is given after the Prefix given in the BASENAME property.