2. Abstraction
Layer
Audio
MIDI

3. Isomer-Symbolic
Description
Ingests single or multiple MIDI files (in
parallel) from a specified directory and
populates a MySQL database with a
symbolic model and associated raw MIDI
data. While the raw MIDI data remains
uninterpreted, it is organized into individual
streams (based on MIDI track) containing
collections of raw NodeEvents.

4. Isomer-Audio
Description
Isomer-Audio ingests single or multiple
audio files (in parallel) from a specific
directory and populates a MySQL
database with an audio model and
associated raw audio data. While the raw
audio data remains uninterpreted, it is
organized into separate streams
depending on the type of preprocessing
(e.g. source separation) employed.
Externals
SMS
MEAPsoft
openBliSSART
SIMM
JAFE

5. Isomer-A.R.E.
A.R.E. is an acronym defined as: Abstracted Representation Engine. The A.R.E. parses
ingested raw symbolic and audio data and populates a MySQL database with abstraction
layer data in a cartesian coordinate format. This allows input from various sources to
combine in a single representation suitable for further analysis and transformation.
slice
segment
streams
stream
time

6. 2ms
melody
stream 1
harmony
rhythm
timbre
melody
stream 2
harmony
rhythm
timbre
time

7. melody
A.R.E. Data
(single point)

8. harmony
A.R.E. Data
(single point)

9. rhythm
A.R.E. Data
(single point)

10. timbre
A.R.E. Data
(single point)

11. Isomer-Query
Isomer-Query allows users to retrieve Isomer-generated A.R.E. data (above) and mine that
data for musically relevant trends. Displays analyzed A.R.E. data as time points (X-axis)
and streams/sub-streams (Y-axis) for a given model and allows on-demand calculation of
any/all of the following data for any grid coordinates or range of coordinates:
melody harmony timbre rhythm
Temporal Direction
Registral Direction
Tension Direction Temporal Instability
Registral Return
Tension Instability Textural Fingerprint IOI Range
Proximity Ratio
Average Tension Dynamic Accent NPVI IOI
Interval Range
NPVI Duration
Melodic Accent
Agogic Accent

12. Event Trends
Event Properties
Event Properties Registral Direction
Registral Return RMS
Pitch Proximity Ratio Spectral Stability
Pitch IR Interval Range Spectral Flatness Event Trends
IR Equity Melodic Accent MFCC (13)
Proximity Equity Textural Fingerprint
Registral Return Dynamic Accent
melody timbre
Event Properties
rhythm harmony
Event Trends
Event Trends
N1 Onset
Event Properties Tension Direction
N2 Onset Temporal Direction
Offset Tension Tension Instability
Temporal Instability
Onset Delta (p) Pitch Collection Average Tension
IOI Range
Duration Delta (p) NPVI IOI Average Chroma
NPVI Duration Chroma (12)
Agogic Accent