These softwares were made with Max 6 from Cycling 74 and tested on Mac OS 10.6. [app] = standalone application, zip'ed [mxf] = Max collective for MaxMSP Runtime [maxpat] = Max patcher, sometimes using 3rd party externals. For details, contact me.

Lindborg, PerMagnus (2013). pml, utilities collection (maxpat). Various abstractions.

Lindborg, PerMagnus (2013). Bark-Bands Calculator (maxpat).

SimpLeq screenshot

Lindborg, PerMagnus (2013). Binaural Beats (maxpat).

SimpLeq screenshot

Lindborg, PerMagnus (2013). Time-Level Trading (maxpat).

SimpLeq screenshot

Lindborg, PerMagnus (2013). Masking Level Difference (maxpat).

SimpLeq screenshot

Lindborg, PerMagnus (2012). TwiceAsLoud_StensTest (maxpat).

SimpLeq screenshot

Lindborg, PerMagnus (2012). Fletcher-Mundson Selftest (zip).

SimpLeq screenshot

Lindborg, PerMagnus (2012). Clicks Perceptual Threshold (maxpat).

SimpLeq screenshot

Lindborg, PerMagnus (2012). PlanetABC (zip).

SimpLeq screenshot

Lindborg, PerMagnus (2011-12). SSER experiment (maxpat). This is a collection of patchers used as platform for the SSER study; more about it here. It's not plug-n-play, so please contact me if you are interested in using it, or developing the ideas further etc.

SimpLeq screenshot

Lindborg, PerMagnus (2011). POMS-A, Max abstraction.

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RTsabine [app] [mxf] [maxpat]

This allows you to estimate a room's reverberation time over six frequency bands given its dimensions and materials in floor, ceiling, and four walls. You can choose two different materials for each surface and scroll back and forth, e.g. to get an intuitive feel for how the RT changes with different choice of acoustic material. The absorptivity data are taken from here. (December 2011).

SimpLeq screenshot

SimpLeq [app] [mxf] [maxpat]

To calculate an estimate of Leq from 'spot measures' over time, and the SPL of several sources playing simultaneously.

SimpLeq screenshot

RoomAcousticsCalculator [app] [mxf] [maxpat]

This is a calculator of sorts for basic room acoustics. You enter dimensions of a room and other parameters and it calculates standing frequencies, Schroeder frequency, Sabin's reverberation time, reverberation radius and more. You can also do calculations on steady-state acoustic pressure and source effect. (September 2011).

RT60estimator [app] [mxf] [maxpat]

To estimate reverberation time from a recording of a room response. You drag'n'drop your recording, selcted a portion of the tail, and it calculates RT60 from a regression of windowed averages. (20 August 2011).

TimeDelayGapTester [mxf] [maxpat] [more]

To test a central assertation in room acoustics regarding the perceptual thresholds for the initial time delay gap, which is particularly important for lateral reflections. It's based on a diagram in Michael Barron's book (Auditorium Acoustics and Architectural Design, p. 40). Also download the 'more' archive which contains the image and a soundfile. (19 September 2011).

pm.Madde [app] [mxf] [maxpat]

A 'free-hand' remake of Johan Sundberg's and Svante Granquist's MADDE voice syntheseiser. (August 2010).

VoiceRangeProfile [app] [mxf] [maxpat]

A voice (or vocal) range profile, aka phonetogram, is a graphic representation of voice use over time. It is something of a 'fingerprint' of a voice (or any sound). An image is generated with pitch range on the x-axis and SPL on the y-axis. Frequently used notes or areas appear brighter. Please note that SPL needs to be calibrated in order to be a useful measure. You can zoom in on an area of interest, and the VPR image can be saved in a number of formats. VoiceRangeProfile is inspired by Pabon's system (PAS5 2010). More information here and here. (9 August 2010).

These softwares are provided here under GPLv3. I do not guarantee their correctness in any way whatsoever. Kindly cite me should you come to use any abstraction in part or whole, or an idea therein that comes from my work. If you have comments or suggestions, feel free to drop me a line.