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app.gainforest.ac.audio

An audio recording record with technical metadata and optional links to occurrence, deployment, and site records.

Repository @gainforest.earth did:plc:qoti4acfmc5wg6zzmtix6hse namespace authority
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Record keytid
Authorityac.gainforest.app
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Record

record · key tid

Properties

accessUri

string · uri

URI to the original full-resolution audio resource (e.g. object storage URL). When present, the PDS blob is a compressed variant and this points to the archival original. Aligns with AC ac:accessURI.

  • maxGraphemes: 2048

blob

ref

The audio file blob stored on the PDS. May be a compressed preview variant when the archival original is referenced via accessUri. At least one of blob or accessUri should be present.

Reference

createdAt

requiredstring · datetime

Timestamp of record creation in the ATProto PDS.

deploymentRef

string · at-uri

AT-URI of the ac.deployment record describing the recording device setup (device model, gain, location, schedule, etc.).

description

ref

A longer human-readable description of the audio recording content.

Reference

license

string

License for this recording (e.g., CC-BY-4.0, CC0-1.0). Aligns with AC dcterms:rights.

  • maxGraphemes: 256

metadata

requiredref

Technical audio metadata (codec, sample rate, duration, frequency bounds, etc.).

Reference

name

string

A short human-readable name or label for this audio recording.

  • maxGraphemes: 256

occurrenceRef

string · at-uri

AT-URI of the dwc.occurrence record this audio is evidence for. Use when this recording documents a specific species detection or biodiversity observation.

recordedBy

string

Name of the person or agent who made the recording. Aligns with AC dc:creator. For automated deployments, this is the person who deployed the device.

  • maxGraphemes: 512

siteRef

string · at-uri

AT-URI of the organization site record where this audio was captured.

spectrogram

ref

Spectrogram image of the recording (visual frequency-time representation).

Reference

tags

array

Freeform tags for the recording (e.g., 'dawn-chorus', 'rain', 'chainsaw', 'anthropogenic-noise'). Aligns with AC ac:tag.

  • maxLength: 20
itemsstring
  • maxGraphemes: 64

thumbnail

ref

Thumbnail image for display in list views.

Reference

variantLiteral

string

AC variant describing the quality/size of the PDS blob relative to the archival original. Aligns with AC ac:variant.

  • maxGraphemes: 64
  • knownValues: Thumbnail | Lower Quality | Medium Quality | Good Quality | Best Quality | Offline

#metadata

object

Technical audio metadata. These are properties of the audio file itself, not the recording context (location, weather, device). Aligns with AC Resource Creation Vocabulary and Music Ontology terms.

Properties

bitDepth

integer

Bits per sample (e.g., 16, 24, 32).

  • minimum: 8
  • maximum: 64

channels

requiredinteger

Number of audio channels (1 = mono, 2 = stereo).

  • minimum: 1

codec

string

Audio codec (e.g., 'PCM', 'FLAC', 'MP3', 'AAC').

  • maxGraphemes: 32

duration

requiredstring

Duration of the recording in seconds (e.g., '300.0').

  • maxGraphemes: 32

fileFormat

string

File format (e.g., 'WAV', 'FLAC', 'MP3'). Aligns with AC dc:format.

  • maxGraphemes: 32

fileSizeBytes

integer

File size in bytes.

  • minimum: 0

filterHighPassHz

integer

High-pass filter cutoff frequency in Hz applied during or after recording. Aligns with AC ac:filterHighPass.

  • minimum: 0

filterLowPassHz

integer

Low-pass filter cutoff frequency in Hz applied during or after recording. Aligns with AC ac:filterLowPass.

  • minimum: 0

maxFrequencyHz

integer

Highest frequency present in the recording in Hz. Aligns with AC ac:freqHigh.

  • minimum: 0

minFrequencyHz

integer

Lowest frequency present in the recording in Hz. Aligns with AC ac:freqLow.

  • minimum: 0

recordedAt

requiredstring · datetime

Date and time the audio was captured (start of recording). Aligns with AC xmp:CreateDate.

sampleRate

requiredinteger

Sample rate in Hz (e.g., 44100, 48000, 384000 for ultrasonic). Aligns with AC mo:sample_rate.

  • minimum: 1

signalToNoiseRatio

string

Signal-to-noise ratio in dB.

  • maxGraphemes: 32

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