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Dear sound processing experts, My name is Felipe Toussaint and I’m
studying Terminology in the Institut
Libre Marie Haps (Brussels). I’m currently working on my master thesis
dedicated to the “audio effect processors” that I will have to deliver on
August 19. Approach: terminology Theme of the master thesis : audio effect processors Languages : English and French Number of terms per language: around 55 terms Objective :
One of the terminology work aspect is to have
the result validated by experts. This is why I’m appealing to your experience
and knowledge of this precise domain. So at first, I would have liked to have a
feedback on the tree that you will find enclosed. Of course, I’m open to any
criticism and/or suggestions (modification, addition, suppression, etc.) Once a consensus found, I will be able to start writing definitions that will be sent to you in order to have them validated as well. If this work arouses your interest, I would be
glad to receive your comments. Best regards, Felipe Toussaint
Tree : This tree is the final result of a large series
of different trees!! This is a bi-branch tree dividing audio effect processors
into two big groups: AMPLITUDE and TIME domains. They both represent the action of the processor on the signal:
to boost and/or lower decibels of the original signal; to delay
the original signal. In order to be as precise as possible, I make
for each effect processor an additional tree describing its devices and control
parameters (not on the enclosed document). Furthermore, I try to be as neutral as possible
while choosing terms, leaving aside analogue and digital domains and using
terms like “modulator” instead of “LFO”, etc. (don’t hesitate to make any
comment). 1. AMPLITUDE domain : in this category, we find processors that, in oreder to create a
specific effect, will boost and lower the whole signal or a speicific frequency
range. a. GAIN-BASED PROCESSORS (boost or lower the whole signal)
i.
amplificateur
(amplifier)
ii.
processeur
de dynamique (dynamics processor) 1. compresseur (compressor) a. limiteur (limiter)
i.
écrêteur
(clipper) 2. expandeur vers le haut (upward expander) 3. expandeur vers le bas (downward expander) a. porte de bruit (noise gate) Devices : gain – détecteur de niveau (level detector) Control parameters : seuil (threshold) – rapport (ratio) –
temps d’attaque (attack) – temps de relâchement (release) b.
FILTER-BASED PROCESSORS (boost or lower, pass or cut, a
specific range of frequencies)
i.
processeur
spectral (spectral processor) 1. filtre (filter) a. filtre passe-bas (low-pass filter) b. filtre passe-haut (high-pass filter) c. filtre passe-tout (all-pass filter) d. filtre passe-bande (band-pass filter) 2. égaliseur (equalizer) a. égaliseur paramétrique (parametric equalizer) b. égaliseur graphique (graphic equalizer) Devices : filters Control parameters : fréquence de coupure (cut-off frequency) –
pente (slope) – gain (gain) – largeur de bande/facteur de qualité (bandwidth/Q
factor) c.
MODULATOR-BASED PROCESSOR
i.
trémolo
(tremolo) 2. TIME domain:
in this category, we find processors that, in order to create a specific
effect, will delay the input signal. (Most of them will mix the original
version with the delayed one.) a.
DELAY LINE BASED PROCESSORS :
i.
Délai (delay)
ii.
écho de
répétition (slapback)
iii.
double
iv.
écho
(echo)
v.
réverbération
(reverberation) Devices : ligne à retard (delay line) – régénération (feedback) – mélangeur
(mixer) Control parameters : temps de retard (delay time) – taux de
régénération (feedback gain) – mélange (mix) Other concepts : signal retardé (wet signal) – signal
original (dry signal) b. MODULATED DELAY LINE PROCESSORS
i.
chorus
ii.
flanger
iii.
vibrato Devices : ligne à retard (delay line) – régénération (feedback) – modulateur (modulator)
– mélangeur (mixer) Control parameters : temps de retard (delay time) – taux de
régénération (feedback gain) – profondeur (depth) – vitesse (rate) – forme
d’onde (wave shape) – mélange (mix) Other concepts : signal retardé (wet signal) – signal
original (dry signal) c.
FILTER BASED PROCESSORS
(time-varying filters)
i.
phaser
ii.
wah-wah Devices : [wah-wah] filtre passe-bande (band-pass filter) – [phaser] filtre
passe-tout (all-pass filter) – modulateur (modulator) - régénération (feedback)
– mélangeur (mixer) Control parameters : profondeur (depth) – vitesse (rate) – forme
d’onde (wave shape) – taux de régénération (feedback gain) - mélange (mix) Other concepts : signal retardé (wet signal) – signal
original (dry signal) Tout ce dont vous avez besoin sur le net et sur votre PC: 100% gratuit ! |
Attachment:
audio effect processor_schéma notionnel.pdf
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