Track – track methods

class pyechonest.track.Track(identifier, md5, properties)

Represents an audio analysis from The Echo Nest.

All methods in this module return Track objects.

Attributes:

analysis_channels int: the number of audio channels used during analysis

analysis_sample_rate float: the sample rate used during analysis

analyzer_version str: e.g. ‘3.01a’

artist str or None: artist name

bars list of dicts: timing of each measure

beats list of dicts: timing of each beat

bitrate int: the bitrate of the input mp3 (or other file)

danceability float: relative danceability (0 to 1)

duration float: length of track in seconds

energy float: relative energy (0 to 1)

end_of_fade_in float: time in seconds track where fade-in ends

id str: Echo Nest Track ID, e.g. ‘TRTOBXJ1296BCDA33B’

key int: between 0 (key of C) and 11 (key of B flat) inclusive

key_confidence float: confidence that key detection was accurate

loudness float: overall loudness in decibels (dB)

md5 str: 32-character checksum of the input mp3

meta dict: other track metainfo

mode int: 0 (major) or 1 (minor)

mode_confidence float: confidence that mode detection was accurate

num_samples int: total samples in the decoded track

release str or None: the album name

sample_md5 str: 32-character checksum of the decoded audio file

samplerate int: sample rate of input mp3

sections list of dicts: larger sections of song (chorus, bridge, solo, etc.)

segments list of dicts: timing, pitch, loudness and timbre for each segment

start_of_fade_out float: time in seconds where fade out begins

status str: analysis status, e.g. ‘complete’, ‘pending’, ‘error’

tatums list of dicts: the smallest metrical unit (subdivision of a beat)

tempo float: overall BPM (beats per minute)

tempo_confidence float: confidence that tempo detection was accurate

title str or None: song title

Each bar, beat, section, segment and tatum has a start time, a duration, and a confidence, in addition to whatever other data is given.

Examples:

>>> t = track.track_from_id('TRXXHTJ1294CD8F3B3')
>>> t
<track - Neverwas Restored (from Neverwas Soundtrack)>
>>> t = track.track_from_md5('b8abf85746ab3416adabca63141d8c2d')
>>> t
<track - Neverwas Restored (from Neverwas Soundtrack)>
>>> 
__repr__()
__str__()
static track.track_from_file(file_object, filetype)

Create a track object from a file-like object.

Args:
file_object: a file-like Python object filetype: the file type (ex. mp3, ogg, wav)
Example:
>>> f = open("Miaow-01-Tempered-song.mp3")
>>> t = track.track_from_file(f, 'mp3')
>>> t
< Track >
>>>
static track.track_from_filename(filename, filetype=None)

Create a track object from a filename.

Args:
filename: A string containing the path to the input file. filetype: A string indicating the filetype; Defaults to None (type determined by file extension).
Example:
>>> t = track.track_from_filename("Miaow-01-Tempered-song.mp3")
>>> t
< Track >
>>>
static track.track_from_url(url)

Create a track object from a public http URL.

Args:
url: A string giving the URL to read from. This must be on a public machine accessible by HTTP.
Example:
>>> t = track.track_from_url("http://www.miaowmusic.com/mp3/Miaow-01-Tempered-song.mp3")
>>> t
< Track >
>>>
static track.track_from_id(identifier)

Create a track object from an Echo Nest track ID.

Args:
identifier: A string containing the ID of a previously analyzed track.
Example:
>>> t = track.track_from_id("TRWFIDS128F92CC4CA")
>>> t
<track - Let The Spirit>
>>>
static track.track_from_md5(md5)

Create a track object from an md5 hash.

Args:
md5: A string 32 characters long giving the md5 checksum of a track already analyzed.
Example:
>>> t = track.track_from_md5('b8abf85746ab3416adabca63141d8c2d')
>>> t
<track - Neverwas Restored (from Neverwas Soundtrack)>
>>>
static track.track_from_reanalyzing_md5(md5)

Create a track object from an md5 hash, reanalyzing the track first.

Args:
md5 (str): A string containing the md5 of a previously analyzed track
Example:
>>> t = track.track_from_reanalyzing_md5('b8abf85746ab3416adabca63141d8c2d')
>>> t
<track - Neverwas Restored>
>>>

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