David Howard Christian Herbst

David Howard
Christian Herbst
Department of Electronics
University of York
Department of Cognitive Biology
York Centre for Singing Science
Laboratory of bioacoustics
University of Vienna
From: Howard and Murphy, 2009, Voice science acoustics and recording, Plural Press
n 
n 
Voice source (larynx) monitoring
n  via visual/electrical observation
Overall output (acoustic) monitoring
n  via a microphone recording
n 
Can measure …
n  Nature
of vocal fold vibration
n  electrolaryngography
n  Voice
fundamental frequency (~pitch)
n  Closed/open
phases of vibration
n 
Elephants(!)
(Herbst et al, 2013)
n  videokymography
n 
n 
Voice source (larynx) monitoring
n  via visual/electrical observation
Overall output (acoustic) monitoring
n  via a microphone recording
n 
Frequency content (cf hearing system)
n 
vowels: bead, bid, bed, bad, Bard, bored, bod, booed
n 
Frequency content (cf hearing system)
n  e.g.
‘trained’ vs. ‘untrained’ vowel
n 
Can measure …
n  Vowel
n  pitch
‘space’ - vocal tract resonances
range/dynamic range (ppp -> fff)
n 
Phonetogram (pitch vs sound level)
n 
Phonetogram
n 
Can measure …
n  Vowel
n  pitch
‘space’ - vocal tract resonances
range/dynamic range (ppp -> fff)
n  Overall
sound level (hearing protection)
n 
n 
n 
Hearing protection - sound level with time
Choir School – peak 104dB(SPL), average 91dB(LEQ)
Legal issues - changes to room acoustics advised …
n 
Can measure …
n  Vowel
n  pitch
‘space’ - vocal tract resonances
range/dynamic range (ppp -> fff)
n  Overall
n  Vocal
sound level (hearing protection)
tract shape
Vocal Vision II
{
Vocalise for two 3-D printed vocal tracts (S1 & S2's tracts) and their owners (S1 & S2)
&
‹
?
{
™™22 ∑
∑
Different vowel on
repeat if available
Ó
w
S2's tract
S2
Ó
™™22 w
S1's tract
˙
w
w
S1
8
& <#> ˙˙
‹
? ˙
˙
{
Ó
Ó
Ó
Ó
∑
∑
Ó
w
˙
15
& bw
‹ w
? bbw
w
{
nw
w
bw
w
˙
w
w
˙˙
w
w
Ó
w
w
w
˙˙
w
w
w
w
˙
˙
# ẇ n ˙
˙˙ bb˙˙
∑
∑
Ó
Ó
w
bw
w
w
˙
Ó
˙˙ Ó
˙˙ Ó
Ó
Ó
Ó
David M Howard (June, 2013)
Ó
w
™™ ™™
w
Ó ˙
Ó
™™ ™™ w ˙
˙
Ó
Ó
Ó
Ó
˙
b˙
˙˙
Ó
w
˙
w
w
∑
∑
Ó
w
Different vowel on
repeat if available
w
Ó ˙
Ó ˙
w
#w
w
w
w
Ó
w
w
w
˙
˙
ẇ ˙
˙˙ bb˙˙
b ẇ ˙
˙˙ #˙
#˙
˙
˙
ẇ # ˙
bb˙˙ nn˙˙
23
& w
‹ ÓÓ
? nw
{
{
w
Ó
Ó
w
˙
˙
ẇ b ˙
˙˙ ##˙˙
w
Ó
Ó
nw
30
& w˙ #˙
‹
?nb˙˙ #n˙˙
w
Ó
Ó
w
˙
n˙˙
##˙˙
˙
#n ˙˙
nn˙˙
nb˙˙
#n˙˙
w
Ó
Ó
w
1.
w
Ó
Ó
w
˙
˙
35
& b˙˙
‹
? bb˙˙
˙
˙
nw
w
ww
b˙˙
#n ˙˙
˙˙™™
Œ
Œ
bb˙˙
˙˙™™
nn˙˙
Œ
Œ
nw
w
nb˙˙
n˙˙
™™
2.
™™
U
w
w
pp
w
w
u
http://www.youtube.com/watch?v=pUryWk-s9Ig
n 
Long neck
n 
Flexible vocal tract
n 
VOICE project
n  measurements
n  resource
for choirs
n  survey
n  your
help needed
n  starting
next year ….
n  The
Choral Sound
(David Howard)
n  Early
2014
n 
Willow Leaf Publishing Ltd
n 
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