Binaural 3D Demonstration on MatLab
University Project
The demonstration represents an interrogation scene. It takes place in a cave, and the listener is the interrogated hooded prisoner. The simulation of cave reverberations is achieved with the convolution of an external database of recorded impulse responses (IRs) in a cave. The KEMAR dummy head-related transfer functions (HRTFs) are employed to obtain the binaural reproduction. In addition, several foley sound effects were recorded to reproduce an accurate and convincing scene.
Western Saloon Acoustic Model – Acoustic Analysis
University Project
Evaluation of the acoustic characteristics of an old saloon 3D architecture. The report illustrates: the choice and recording of the specific anechoic sources for the virtual scene; the 3D modelling on Google SketchUp and the acquisition of Impulse Responses (IRs) on Odeon; the analysis of the IRs and the auralisation of the anechoic sources.
Because of the COVID-19 lockdown, the report covers only the first revision of the whole virtual environment acoustic examination, including directions on how to perform improvements to the model and simulations. So, further work would take into account the results of this first analysis to re-design the model accordingly.
Download the IRs, Auralised tracks and Report <Here>
Recording and evaluation of acoustic Impulse Responses (IRs)
University group project
It includes:
- synthesis of the impulse;
- analysis of the chosen site acoustic environment;
- planning of the survey: measurements of microphones positions in relation to a static source location to provide optimum coverage of the space under investigation;
- conducting Risk Assessment management and documentation;
- on-site ambisonics recordings of the impulses;
- reconstruction and decoding of the ambisonics IRs;
- evaluation of the IRs resulting acoustic parameters;
- auralisation of the several impulses (anechoic source convolved with each Impulse Response);
- evaluation of the auralised results compared with the on-site recording of the anechoic track, captured at the same positions of the microphones.
More information and downloadable contents (auralisations and IRs files) will be added as soon as available on the University of York OpenAIR library.
We also took a group presentation held at the end of the project, outlining the work done. The slides below display my part of the speech regarding DSP theory and techniques for IRs measurements.
iOS Music App – Otamatones
University Project
iOS app written in Swift, ‘OtamaTones‘ recreates the sound of the Otamatone, a unique Japanese electronic musical instrument. The app design includes the main fretboard view and several modules, each of which modifies a feature of the sound (various Oscillators settings, Modulation and Time-Based effects…). The touch fretboard represents the body of the Otamatone; it resembles a violin fretboard and its proportions between frets. The user can play along with diverse backing tracks and creatively combine multiple modules to personalise the sound in real-time.
Voice Synthesis System in Max/MSP
University Project
Voice synthesis system that aims to educate the user on the differences between the British and Italian accent through the analysis of the word spaghetti. The system is designed to let the user adjust, for the British pronunciation, both the timing between -ghét- and -ti- syllables and the pitch on -ghét- one. Changing these parameters with two different sliders, he will try to resemble the Italian pronunciation.
Hardware interfacing for audio – Feel the (poly)Rhythm game
University Project
Feel the (poly)Rhythm is a game for training the user to play and feel the polyrhythms correctly.
The system prototype of Feel the Rhythm interfaces a BBC Micro:Bit microprocessor a potentiometer and a push button to the game PD patch. The latter controls the signal flow of the MIDI data received from the microprocessor, and displays the UI while playing.
The addition of more sensors to collect MIDI data, would enable to use the system combined with several music instruments, thus to enrich the training and learning experience on your own instrument.
Click here to see more details…
Roberto Grilli 