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Re: tapping hardware & software: summary

Dear  list member & Daniele,

Thanks for this complete organized summary.

An alternative to tapping on a mic might be to buy piezoceramic sheets that you can cut at the size you want (and thus cut several pieces in one sheet).

You just have to solder 2 wires (one on each face) to a "mic plug" (for example jack 3.5mm for connecting it to a standard laptop computer). You can then put the piezo under some material (e.g. a piece cut in a mousepad).

The main advantage is that the "tap" channel will free from other environmental sounds (you'll only get the vibrations on your tapping pad). The post processing (extraction of tap times) will thus be easier.

I have not tested it for tapping experiments but those piezo sheets are often used for Do-it-Yourself electronic drums projects.

best regards
Sylvain ClÃment

Le 29/03/11 23:15, schon a Ãcrit :
Dear all,
first of all I wish to thank all those who replied to my message. I
received more or less 30 messages! This enthusiasm and will to share
knowledge make me "feel good"! Again thank you so much.
I tried to summarize the different solutions below grouped in different
"categories", in case this may help someone else in the future.

I still have to make a definite choice, but after discovering that onset
extraction of tapping on a mic is mostly automatic,
I may choose this way (ie recording both playback and tapping on the same
file, left&  right), although the NanoPad might be more fun for kids.

very best regards

"Psychological solutions": software for presenting stimuli and recording
using a mouse or keyboard.

- DMDX, free software for stimuli presentation:

- Psyscope X. It is freeware.
It's Mac-only, but has good timing accuracy and fairly easy to use.

- Impromptu 1.21 (free MAC Scheme program
language with easy access to sound, graphics and MIDI) and a Korg NanoPad

"Classical solutions"

- MaxMSP patch
http://www.eecs.qmul.ac.uk/~andrewr/software/BeatAnnotator.zip (Mac
Tap along on a mic or MIDI, analyzes and saves taps to txt file

- MatTap:Matlab toolbox

Requires Matlab and a data acquisition card compatible with the Data
Matlab toolbox

"Audio solutions": Using a microphone as the sensor, Playback of the
stimulus and recording
Better to record both output (metronome or music) and input (mic) as L&R
channels in a stereo file.

- PD (http://puredata.info/). Free

- Daqarta for Windows (Shareware, 1 month)

- Audacity, Free, can play and record, plus automatic extraction of taps
to txt file

Alternative to microphone: tap a button that makes or breaks a simple
electrical circuit. The resulting signal could then be
recorded through the sound-card as if it was a sound signal on the second
stereo channel.

"Hybrid solutions": audio software recording the mouse, keyboard or MIDI

- Transcribe (http://www.seventhstring.com/)
play a file and set markers by use of mouse/keys
(Shareware, 1 month, multiplatform)

- Sonic Visualiser (free, multiplatform)
Can playback and record via keyboard or MIDI
Export taps as txt file.

"Getting rid of the computer solution"

- Arduino (http://www.arduino.cc/).
It contains a number of A/D converters as well as TTL inputs/outputs as
well as a microcomputer.
It can therefore be programmed to operate in real-time as a standalone,
independent of any personal computer you need for the control and
programming interfacing.
It requires programming to perform a tapping experiment


Laboratoire de Neurosciences Fonctionnelles et Pathologies
LNFP EA 4559
Equipe  "Neuropsychologie et Cognition Auditive"
Università de Lille 3,UFR de Psychologie
BP 60149
59653 Villeneuve dâAscq Cedex

Phone: +33 3 20 41 64 42
Fax: +33 3 20 41 63 24
Email: sylvain.clement@xxxxxxxxxxxxxx
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