| This dialog sets the default options for conversion of audio to MIDI. When working with individual audio files, these settings can be easily customized via the MidiWindow's options dialog. Once a configuration is found that achieves satisfactory results for an audio recording, the custom settings can be named, saved, and, if desired, associated with the audio file so that they are automatically loaded when that audio file is opened. |
| Note Range
The MIDI Assembler will not generate note events outside of the selected note range.
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| Lowest Note | Select the lowest MIDI note that the assembler can generate. |
| Highest Note | Select the highest MIDI note that the assembler can generate. |
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| Polyphony In polyphonic mode, the assembler places no limits on how many MIDI notes can be active at one time - the only criteria is that the average signal measured over a note's frequency range must exceed the threshold (see About the Note Processor for more information). In monophonic mode, only a single note can be active at any time, and once a note is turned on, all other frequencies will be ignored regardless of their relative signal strengths until the active note is turned off. In monophonic mode, the mean frequency of the active note can be monitored and compared to the note's theoretical "perfect pitch" frequency, and MIDI pitch-bend events can be generated accordingly. Since pitch-bend events affect an entire MIDI channel, AudioExplorer cannot presently support pitch-bend events in polyphonic mode, since all notes are sent over the same channel. A future version of AudioExplorer may support various "channelizing" logic for assigning separate channels to notes in polyphonic mode.
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| Monophonic | When checked, the MIDI Assembler will operate in monophonic mode. |
| Generate Pitch Bends | When checked, MIDI pitch-bend events will be generated. This feature is unavailable in polyphonic mode. |
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| Stutter Control If a sustained note wavers in the vicinity of the NoteProcessor's threshold, it might produce multiple note-on/note-off events, causing a "stuttering" note. To prevent this, the MIDI Assembler can reduce the threshold for "on" notes by a constant factor, and MIDI note-off events will not be generated until a note signal drops below this reduced value.
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Threshold Reduction |
Enter the factor (a value between 0 and 99.99) by which the threshold will be reduced for "on" notes. |
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| MIDI Channels
The MIDI Assembler currently supports generation of events for only a single MIDI channel.
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Channel |
Enter the MIDI channel for all generated MIDI events. |
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| MIDI Timing
The MIDI Assembler requires this MIDI timing information to translate audio time (minutes, seconds, and milliseconds) into MIDI timing (MIDI ticks, beats, and measures). The MIDI resolution is also known as the "timebase" or "PPQ" (pulses per quarter-note). The default value (960) is standard for modern MIDI applications. The beats per measure should reflect the known time signature of an audio recording. The tempo setting can be set to the audio recording's tempo, if known. The MIDI Window provides a tool for more finely adjusting the MIDI tempo, after the MIDI data has been generated.
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| Resolution | Select the desired resolution for generated MIDI data. |
| Beats per Measure | Select a value which matches the recording's time signature. |
| Tempo | Enter a value which approximates the recording's tempo. |