Screenshots

Main Window	User Waveforms
Mixer	Tuning Window
Audio Editor	Floating Keyboard
Help Browser	Preferences

Features

H-Pi Lo-Fi Microstudio (HPLF) is a stand-alone [not a plugin] fully tunable softsynth and multi-track audio utility which places emphasis first on tuning flexibility, using basic building blocks of electronic sound. Tunings can be specified across the entire MIDI range (unique tunings per channel, totaling 2048 available pitches). HPLF is compatible with U-PLEX and TPX keyboards, and standard MIDI controllers, and can communicate with sequencing and notation software such as Sibelius, Finale, Logic, etc.

HPLF output can be streamed to a .wav or .aiff file, and HPLF has a full featured audio editor built in, allowing you to do all the typical editing procedures, and some not so typical things as well. Essentially, HPLF is also now a multi-track recording utility. You can load any number of audio files (limited only by system resources), and mix them along with your playing. Tracks can be looped, panned, soloed, muted, and attenuated. Within the editor you can also record directly from a microphone. Edit the results, set loop points, add fades, change the gain, reverse audio, find fundamental frequencies, and more.

• loads .hz and .csv Tuning Table files (export files from free CSE and TPXE tuning editors)
• creates 1 virtual MIDI input port on Mac
• scaleable polyphony, up to 28 voices
• basic waveforms:
  • sine
  • triangle
  • sawtooth
  • square
  • pulse
  • noise
• custom waveforms:
  • add arbitrary overtones to a fundamental (harmonic or inharmonic)
  • specify the amplitude and phase shift of each overtone
• envelope control:
  • Attack time and amplitude level
  • Decay time
  • Sustain amplitude level
  • Release time
• 5 adjustable rate LFOs, apply to:
  • pulse width
  • overtone amplitudes
  • filter parameters
  • panning
• 7 filter types
  • low pass
  • high pass
  • band pass (skirt)
  • band pass (peak)
  • notch
  • all pass
  • peak EQ
  • low shelf
  • high shelf
• 2 delays
  • single delay
  • multi delay
  • 4 type filter
• polyphonic pitch gliding (portamento)
  • glide time control
• panning, volume, and velocity control
• playback and/or looping of any number of audio files while playing or recording
• MIDI learn - quickly map incoming MIDI CC messages to HPLF controls
• full-featured built-in audio editor
• save patches and custom waveforms in human readable / editable XML text format
• automatic bug reporting

Latest Version Details

Version 2.0.3, March 2011

This version has been updated in the following ways in response to user input:

Bug Fixes

• Sustain pedal no longer cuts off held keys
• MIDI devices now update properly in the MIDI window
• pulse waves now respect note velocities
• volume slider is now respected by all waveforms
• tuning tables window now resizes properly

New features

• 7 types of filters
• 5 assignable modulators
• 2 programmable delays
• Floating resizable keyboard window
• synth output streaming to WAV or AIFF files
• playback and/or looping of any number of audio files while playing or recording
• MIDI learn - quickly map incoming MIDI CC messages to HPLF controls
• full-featured built-in audio editor
• user waveforms now allow setting the amplitude of the base wave

Improved features

• overall audio performance boosted
• user interface reorganized and enhanced
• MIDI is now multi-client (HPLF can be controlled from multiple MIDI input sources)

HPLF is updated and improved in response to user input. The HPLF reports page shows this process in action.

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