Class Name: Sound

Superclass - <SEDRIS Abstract Base>

Subclasses

Definition

An instance of this DRM class is a digital representation of an acoustic phenomenon.

Primary Page in DRM Diagram:

• 21

Secondary Pages in DRM Diagram:

• 3
• 10

Example

1. A digital sound resource containing the sound of a fog horn.

FAQs

How can a data provider reference a <Sound> in a transmittal?

See <Sound Instance>.

How is the <Classification Data> component used?

The optional <Classification Data> is used to identify the type of <Sound> within a <Sound Library>.

Constraints

Associated by (one-way)

• zero or more <Sound Instance> instances

Composed of (two-way)

• zero or one <Classification Data> instance

Composed of (two-way metadata)

• zero or one <Access> instance
• zero or one <Citation> instance
• zero or more <Cross Reference> instances
• zero or one <Description> instance
• zero or one <Keywords> instance
• zero or one <Point Of Contact> instance
• zero or more <Process> instances
• zero or more <Source> instances

Component of (two-way)

• one <Sound Library> instance

Inherited Field Elements

Field Elements

Notes

Fields Notes

name

 This is a meaningful short name.  A full description would be in a
 <Description> component.

sound_urn

 This is a SEDRIS sound URN, in the form
 urn:x-sedris:<DNAS>:sound=<SN>:<S_FMT>
 where:
   <DNAS> is domain name authority name string,
   <SN> is a scoped sound resource name string, and
   <S_FMT> is a SEDRIS registered sound tag.

duration

 This is the length of the sound clip in seconds.

sampling_rate

 This is the number of samples per second. For example,
 a standard CD has a sampling of 44.1 kHz, which would be
 a sampling rate of 44100.

bits_per_sample

 This is also called 'sample size' or 'quantization';
 for example, a standard CD has 16 bits per sample.

channel_count

 Note that 1 = mono, 2 = stereo (CDs can be recorded with 4 channels).

method

 This identifies the encoding scheme (such as MULAW, ALAW, ACE, ADPCM,
 CELP, LPC) and compression scheme (CODEC) used, if any.