Daqarta
Data AcQuisition And Real-Time Analysis
Scope - Spectrum - Spectrogram - Signal Generator
Software for Windows
Science with your Sound Card!
The following is from the Daqarta Help system:

Features:

Oscilloscope

Spectrum Analyzer

8-Channel
Signal Generator

(Absolutely FREE!)

Spectrogram

Pitch Tracker

Pitch-to-MIDI

DaqMusiq Generator
(Free Music... Forever!)

Engine Simulator

LCR Meter

Remote Operation

DC Measurements

True RMS Voltmeter

Sound Level Meter

Frequency Counter
    Period
    Event
    Spectral Event

    Temperature
    Pressure
    MHz Frequencies

Data Logger

Waveform Averager

Histogram

Post-Stimulus Time
Histogram (PSTH)

THD Meter

IMD Meter

Precision Phase Meter

Pulse Meter

Macro System

Multi-Trace Arrays

Trigger Controls

Auto-Calibration

Spectral Peak Track

Spectrum Limit Testing

Direct-to-Disk Recording

Accessibility

Applications:

Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Auditory phenomena

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery

Automotive

Product test

Contact us about
your application!

Mashup.DQM MIDI Setup

When this setup is loaded, right-clicking on the Pitch-to-MIDI title bar or any non-control portion of the dialog will open Help at this topic.

Mashup.DQM is an extension of the concept used in the "Glossy" setup family. Those are based on 8 concurrent voices, each playing a different random melody. Here, 8 concurrent voices are each playing a different traditional melody:

    Frere Jacques
    Alouette
    Amazing Grace
    When the Saints Come Marching In
    Joshua Fought the Battle of Jericho
    This Old Man
    Take Me Out to the Ball Game
    Pomp and Circumstance

Although only the melody lines are used in Mashup.DQM, each song is also included separately in Daqarta as a complete performance, including chords.

For Mashup use, the melody for each voice has been transposed to the key of C by means of its Pattern Key control. Each melody is a different length, and each starts at a random location (somewhere between note 30 and 60) chosen at the beginning of the performance. When each melody reaches the end, it repeats from its proper start. Since the melody lengths are different, there is never any lasting synchrony between them.

Each voice plays for a randomly-selected 40-60 beats, after which the instrument is randomly changed. The voice may also be randomly shifted an octave higher or lower than the default. Then the process repeats with another randomly-selected 40-60 beats. This continues until you manually end the performance. All voices are independent, including their random values.

You might think this would be total chaos, but it sounds suprisingly good. Sometimes you can briefly pick out an individual melody if it is using an instrument that is distinctively different from rest, but often they all seem interwoven. (Note that the songs used for this were chosen arbitrarily... no attempt was made to guess which ones might work well together.)

Here is the Changes script listing for Voice 1:

    ;Frere Jacques (D)      ;Originally in the key of D
    p1=?(30,60)            ;Start at random position

    {!                     ;Repeat loop forever
    oL="Frere Jacques"     ;Show name of song
    I1=?(0,118)            ;Random Instrument
    Y1=?(-1,1)*12+58       ;Random octave
    ;W=87                   ;Full melody length
    W=?(40,60)             ;Wait 40-60 beats
    }                      ;Repeat infinite loop

Most of the above should be self-explanatory from the comments and links, but the Y1=?(-1,1)*12+58 random octave may not be clear. The Y1 command sets the Pattern Key for Voice 1. The default value is MIDI note number 58, which is shown as A# (more commonly known as B flat). That value was chosen to transpose this song, which was originally in the key of D, into the key of C. (See the Pattern Key topic for more on transposition.)

To transpose this default up or down by an octave, 12 semitones (MIDI note numbers) must be added to or subtracted from it. The ?(-1,1) term produces a random integer between -1 and +1, namely -1, 0, or +1. After multiplying by 12 this becomes -12, 0, or +12, which is then added to the default 58 value.

The other voices are similar, but since they have different original keys (shown in parentheses in the initial comment line), they have different default Pattern Key values.


Voice 2:

    ;Alouette (F)
    p2=?(30,60)

    {!
    oL="Alouette"
    I2=?(0,118)
    Y2=?(-1,1)*12+67
    ;W=119
    W=?(40,60)
    } 

Voice 3:

    ;Amazing Grace (G)
    p3=?(30,60)

    {!
    oL="Amazing Grace"
    I3=?(0,118)
    Y3=?(-1,1)*12+65
    ;W=191
    W=?(40,60)
    } 

Voice 4:

    ;When the Saints Come Marching In (F)
    p4=?(30,60)

    {!
    oL="Saints Come Marching In"
    I4=?(0,118)
    Y4=?(-1,1)*12+55
    ;W=67
    W=?(40,60)
    } 

Voice 5:

    ;Joshua Fought the Battle of Jericho (G)
    p5=?(30,60)

    {!
    oL="Joshua"
    I5=?(0,118)
    Y5=?(-1,1)*12+53
    ;W=193
    W=?(40,60)
    } 

Voice 6:

    ;This Old Man (F)
    p6=?(30,60)

    {!
    oL="This Old Man"
    I6=?(0,118)
    Y6=?(-1,1)*12+67
    ;W=63
    W=?(40,60)
    } 

Voice 7:

    ;Take Me Out to the Ball Game (D)
    p7=?(30,60)

    {!
    oL="Ball Game"
    I7=?(0,118)
    Y7=?(-1,1)*12+58
    ;W=98
    W=?(40,60)
    } 

Voice 8:

    ;Pomp and Circumstance (B-flat)
    p8=?(30,60)

    {!
    oL="Pomp and Circumstance"
    I8=?(0,118)
    Y8=?(-1,1)*12+62
    ;W=160
    W=?(40,60)
    } 

See also Example MIDI Setup Files, MIDI Setup Files, Musical Frontiers, DaqMusiq, KaleidoSynth, Pitch-to-MIDI dialog, Pitch Track Toolbox - Overview, Spectrogram / Pitch Track Controls, Spectrogram / Pitch Track (Sgram/PT)

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