HAL Id: hal-02432795
https://hal.archives-ouvertes.fr/hal-02432795
Submitted on 9 Jan 2020
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Who Does Control the Attack Transients of the Recorder, the Musician or the Instrument Maker?
Augustin Ernoult, Benoît Fabre
To cite this version:
Augustin Ernoult, Benoît Fabre. Who Does Control the Attack Transients of the Recorder, the Musi- cian or the Instrument Maker?. International Symposium on Musical Acoustics, Jun 2017, Montréal, Canada. pp.18 - 22. �hal-02432795�
Who controls the attack transients of recorder?
zugustin Ernoult. Venoît Fabre
Lutherie"zcoustique"Musique. Institut Jean le Rond dTzlembert.
Université Pierre et Marie %urie. Paris 8. %NRS. Sorbonne Universités
w wD4 wD: wD8 wD& O OD4 OD: OD8 OD& 4
w :ww
&ww
w wD4 wD: wD8 wD& O OD4 OD: OD8 OD& 4
−2ww w 2ww
Time (s)
Time (s) SupplyPressure pm(Pa)zcDPressure pac(Pa)
PRondeauP JD5D Vraun
10 20 30 40 50 60 70 80 90 100
0 100 200 300
10 20 30 40 50 60 70 80 90 100
−100 0 100
Growth 90%
Onset
Rising time
10% 90%
target pressure
target amplitude
10%
pac pm
♫ : equiped recorders
(Vass. zlto. Soprano. Sopranino)
♫ 3 playersk
♪ Expert 1 (: recordersk 4&ww notes)
♪ Expert 2 (zlto S Sopranok 9ww notes)
♪ Novice (zlto S Sopranok 8ww notes)
♫ Tasksk Scales S Music
zcquisition of musical attacks
No blow
Oscillating Jet
No Jet
No sound
Steady Pressure
Steady Soundk
frequency. amplitude
Onset of Oscillation
zir supply
Growth of Oscillation
1ms0 10ms 100ms 1s
0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16
10−6 10−5 10−4 10−3 10−2 10−1 10−2
10−1
´
Novice
Fast Slow
5urationofjetformation(s)
Rise time of pressure (s)
Fast Slow
0 10 20 30 40 50 60 70
0 0.05 0.1 0.15 0.2
1 T10 3 T1 10 T1 30 T1 100 T1 0.02
0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18
0 2 4 6 8 10
0 0.02 0.04 0.06 0.08 0.1
0 20 40 60 80 100 120
0 5 10
0 20 40 60 80 100 120
0 0.02 0.04 0.06
ampD(f1) ampD(f2)
10 20 30 40 50 60 70
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
10 20 30 40 50 60 70
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
♫ Independent ofk
♪ Tessiture
♪ Instrument
♪ Target pressure
♫ 4 expertsk similare
♫ Novice x Ow x Experts
Pressure Jet velocity
♫ Limited by the channel inertia
♫ Expertsk reach the recordersT boundary
Musician: control the pressure rise Manufacturer: control the channel inertia
Rise time (logD scale)
Fractionofdata
♫ Proportional to the period (T
1)
♫ Novice x Ow x Experts
♫ 4 expertsk slightly different
Musician: energy input
Manufacturer: recorderTs response
♫ Proportional to the period (T
1)
♫ (Time/T
1)k Independent ofk
♪Instrument ♪Tessiture ♪Player
High frequencies components
Musician: trajectory in the Pbifurcation diagramP Manufacturer: zones of growth
Hard zttacksk
♪ Fast pressure rise♪ Strong energy input
Soft zttacksk
♪ Slow pressure rise♪ No energy input
5urationk 5urationk
Fractionofdata Fractionofdata
(Growth time)x f1 (Onset time)xf1 (logD scale)
Frequency(kHz)
Time (ms) Time (ms) Jet Velocityk θ=Uj/(Wf1)
Jetvelocityk θ=U j/(Wf 1) zcDPressurekp ac/(ρcU j)
zcDPressurek p ac/(ρcU j)
Expert O Expert 4 Novice
Expert O Expert 4 Novice
Expert O Expert 4 Novice
Experts
increase
f2 f1
Musician: low control
Manufacturer: impose the duration
Supply pressure ( Pa ) zcD pressure ( Pa )
ptarg x 4ww Pa ptarg x O kPa Vass
zlto Soprano Sopranino
decrease increase
f2 f1
decrease
f2
f1increase increase
Stationnary
f2
f1increase increase
Stationnary
increase
f2 f1
decrease
Time (ms)
Time (ms)
OwN of pm targD
OwN of pac targD OwN of pm targD
OwN of pac targD
Frequency(kHz)
Time (ms)
