Archive

Overview

This document explains some of the motivation and background behind various
design decisions that went into defining SDIF.

Why Isn't SDIF IFF Compatible?

In early versions of SDIF, we claimed compatibility with the IFF standard,
the par

Define a global t_symbol called ps_buffer:

t_symbol *ps_buffer;


Do this in the main function:

void main(void){
...
ps_buffer = gensym("buffer~");
...
}

This function should convert a buffer name into an actual buffer:

t_buffer* _sym_to_buffer(t_symbol* s) {
 t_buffer *b;

# Remove any existing drivers:

sudo rm -rf /System/Library/Extensions/sky2_multi.kext
sudo rm -rf /System/Library/Extensions/RboxAudioDriver.kext
sudo rm -rf /System/Library/Extensions/Meyer120AudioDriver.kext
sudo rm -rf /System/Library/Extensions/DodecAudioDriver.kext
sudo rm -rf /System/Library/Extensions/TouchpadAudioDriver.kext

Here are some basic instructions for setting up a "Telematic" (remote) rehearsal/performance using AULab and the AUNetSend/Receive Audio Unit plugins.

1. Get a copy of AULab: it comes with the Developer tools from Apple, but you may be able to download it separately. It should include the AUNet* plugins--you shouldn't have to download them separately.
   

Access to the following resources requires membership in the CNMAT-SHRC research group. The authentication details are the same as used to access the website.

# Subversion Repository for Experiment Code:

- Checkout URL: [https://cnmat.berkeley.edu/svn/repository/shrc|https://cnmat.berkeley.edu/svn/repository/shrc]

The programming boot for the BTE hearing aid was modified to support simultaneous programming and direct audio input.

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A small hole is drilled into the side of the boot.

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A pair of wires carrying the audio input are soldered directly to the internal connectors.

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Binaural DAI + Reprogramming.

TASCAM US-122L audio interface
PreSonus headphone amplifier
Mac MINI
2Ghz Intel Core 2 Duo
OSX 10.5.5
1GB 667Mhz DDR2 SDRAM

...

Apparatus configuration information.

Theoretical and applied results relevant to apparatus design, program model, etc.

- Design of the filterbank
- How to make a new one

Digital "SPL" reference:

The full-scale sinusoid is considered 120 dB SPL.
SPL meters are not weighted (e.g. A, C, etc). (@todo)
Music files are normalized to 72 dB SPL, and about 30 seconds long, and extracted from the "loudest part" of the music selection.

Collected materials on the CNMAT-SHRC research collaboration.

Instructions:

- Put the maxlib- folder into the MaxMSP path
e.g. Cycling '74 directory), or add it to the path (Options > File Preferences)
*Note that very long paths may be problematic in MaxMSP's buggy file opener.
An error, e.g. "can't open" in the Max status window means bad things
- Open main patch, exp/ui/comp_interface_16b.

DSP settings:

- 44.1 khz

I started writing _Labirynt_ while I was on a Fulbright grant in Poland. The spelling is polish, although
the word is ancient. In retrospect though, it seems to be a very American piece. I also started with the
idea of not writing a concerto, but rather a piece for soloist and orchestra that was more cooperative.
But, oftentimes compositions go their own ways.

A three-year project involving CNMAT/Music Dept./UC Berkeley and the Centre National de Création Musicale (CIRM), the Conservatoire National de Région de Nice (CNR), and the Université de Nice Sophia-Antipolis (UNSA). The scope of the documentation will include text, photos and audio samples from participating student annd faculty composers.

Two methods are provided to interact with digital and analog I/O pins--at the individual pin level, and in pin-groups at the "port" level. The port mode is used for high-speed reporting of inputs. The pin/port message names are dependent on the hardware platform and correspond to the silk-screened names. The examples here use /ra and /rb consistent with the Sparkfun Bitwacker--for the CUI the equivalent would be /a, /b, /c, /d and /an.

The value of an analog input pin is reported as a floating-point number normalized to the range [0.0 - 1.0], inclusive.

-----

**/ra/0/vp** : Get/set ADC Vref+
**/ra/0/vn** : Get/set ADC Vref-

This message is only understood by a pin with analog input capability.

What is Subversion?

Subversion ("svn") is a version control system; it manages successive revisions of files, keeping track of the latest version of each file, which versions of other files are associated with particular versions of a file, etc. It can be used to:

By default a MaxMSP XCode Project must live in cnmat/trunk/max/(dir1)/(dir2)/(dir3) so that the relative path "../../../makefile.per-object" points to the shared makefile. Typically this relative path "../../../" is also used in the XCode build settings to locate the relevant c74support directory and its header files.