v0.5.1

Chirplab v0.5 includes:

Graphical User Interface

• File input and output
• Sound card input and output
• Input calibration dialog for acoustic/electrical measurements
• Create and configure projects
• Create and configure measurements
• Save and load measurement presets
• Export individual measurement graphs and data

Command-Line Interface

• Measure an input file using the settings in a Chirplab project file
• Switches to override input file, input channel, and data output directory
• Generate a chirp stimulus file from project file parameters

Runs on Windows, Linux, and Mac. GitHub actions automatically bundle a Windows executable for every build and release.

Measurements

• Frequency Response
• Phase Response
• Group Delay
• Harmonic Distortion
• Impulse Response
• Waterfall
• Tracking Filter
• Residual Distortion

Examples:

• New project response file allowing immediate configuration and exploration of measurements without first needing to capture a chirp response
• Speaker measurement project with example speaker response recording and measurements that are typical for basic electroacoustic evaluation
• THD+N and High Order Harmonic Distortion measurement presets
• Rub and Buzz measurement presets using different analysis methods

Updates in v0.5.1

• Fixed GitHub actions builds. Each commit and release now built with PySide6 and OpenGL acceleration
• Minor bug fixes

v0.5

Chirplab v0.5 includes:

Graphical User Interface

• File input and output
• Sound card input and output
• Input calibration dialog for acoustic/electrical measurements
• Create and configure projects
• Create and configure measurements
• Save and load measurement presets
• Export individual measurement graphs and data

Command-Line Interface

• Measure an input file using the settings in a Chirplab project file
• Switches to override input file, input channel, and data output directory
• Generate a chirp stimulus file from project file parameters

Runs on Windows, Linux, and Mac. GitHub actions automatically bundle a Windows executable for every build and release.

Measurements

• Frequency Response
• Phase Response
• Group Delay
• Harmonic Distortion
• Impulse Response
• Waterfall
• Tracking Filter
• Residual Distortion

Examples:

• New project response file allowing immediate configuration and exploration of measurements without first needing to capture a chirp response
• Speaker measurement project with example speaker response recording and measurements that are typical for basic electroacoustic evaluation
• THD+N and High Order Harmonic Distortion measurement presets
• Rub and Buzz measurement presets using different analysis methods

Other updates in v0.5

• Breaking change from v0.4: Improvements to Impulse Response measurement, with changes to measurement parameters
  • Added reference channel setting
  • Made truncation settings more flexible
  • Improved GUI controls to automatically fix several mutually exclusive parameter settings
  • Parameter changes
    • ref_channel has been changed to timing_channel
    • ref_channel now refers to the actual signal used for the impulse response reference
    • truncate has been removed
    • truncate_mode now controls how truncation is performed
    • truncate_time added, which is the length of time after t0 when truncate_mode is 'fixed'
• Tracking Filter Rub and Buzz example presets updated to use 8th order Butterworth highpass filtering

v0.4

Chirplab v0.4 includes:

Graphical User Interface

• File input and output
• Sound card input and output
• Input calibration dialog for acoustic/electrical measurements
• Create and configure projects
• Create and configure measurements
• Save and load measurement presets
• Export individual measurement graphs and data

Command-Line Interface

• Measure an input file using the settings in a Chirplab project file
• Switches to override input file, input channel, and data output directory
• Generate a chirp stimulus file from project file parameters

Runs on Windows, Linux, and Mac. GitHub actions automatically bundle a Windows executable for every build and release.

Measurements

• Frequency Response
• Phase Response
• Group Delay
• Harmonic Distortion
• (new) Impulse Response
• (new) Waterfall
• Tracking Filter
• Residual Distortion

Examples:

• New project response file allowing immediate configuration and exploration of measurements without first needing to capture a chirp response
• Speaker measurement project with example speaker response recording and measurements that are typical for basic electroacoustic evaluation
• THD+N and High Order Harmonic Distortion measurement presets
• Rub and Buzz measurement presets using different analysis methods

Other updates in v0.4

• Settings to control whether measurement noise floor estimate is plotted in GUI or included in measurement data output
• 'dB' output unit for Frequency Response measurement, which normalizes measurement to a reference frequency point
• Help menu with links to GitHub, issues, and wiki
• Other minor tweaks and bugfixes

v0.3

Chirplab v0.3 includes:

Graphical User Interface

• File input and output
• Sound card input and output
• (new) Input calibration dialog for acoustic/electrical measurements
• Create and configure projects
• Create and configure measurements
• (new) Save and load measurement presets
• Export individual measurement graphs and data

Command-Line Interface

• Measure an input file using the settings in a Chirplab project file
• (new) Switches to override input file, input channel, and data output directory
• (new) Generate a chirp stimulus file from project file parameters

Runs on Windows, Linux, and Mac. (new) GitHub actions automatically bundle a Windows executable for every build and release.

Measurements

• Frequency Response
• Phase Response
• (new) Group Delay
• Harmonic Distortion
• (new) Tracking Filter
• (new) Residual Distortion

Examples:

• New project response file allowing immediate configuration and exploration of measurements without first needing to capture a chirp response
• Speaker measurement project with example speaker response recording and measurements that are typical for basic electroacoustic evaluation
• (new) THD+N and High Order Harmonic Distortion measurement presets
• (new) Rub and Buzz measurement presets using different analysis methods

Other updates in v0.3

• Hotkeys for common tasks in GUI, including play/capture
• Graph ticks show 1,2,5 series by default
• Chirp Stimulus/Response tab graph settings configured for much faster plotting
• Other minor bugfixes, mostly GUI corner cases

v0.2

Chirplab v0.2 includes:

• File input and output
• (new) Sound card input and output
• (new) Works on Linux and Mac
• Measurements
  • Frequency Response
  • (new) Phase Response
  • Harmonic Distortion

v0.1

Initial minimum usable release. Only supports file I/O and only includes Frequency Response and Harmonic Distortion measurements.