Auditory seasoning filters
altering food perception via augmented sonic feedback
of chewing sounds.
Be aware that this presentation contains some chewing and eating sounds.
If you experience misophonia, please mute the sound of this video.
The experience of eating is shared daily among most humans as a social,
cultural, pleasurable and life sustaining activity.
A crucial part of body weight management.
Healthy eating involves consideration both in terms of food choices,
such as avoiding excess intake of salt, sugar and fat,
as well as eating practices, including eating the right quantity of food.
Eating at a slower rate and increasing the number of chews before
swallowing When we eat are expensive.
The food isn't only dictated by a case, but but also by other senses.
Perception research has demonstrated the important role of visual,
olfactory and tactile cues that can affect our perception
of what we eat in terms of texture, flavor and sense of fullness.
The HCI community as leverages these findings to create tools
for healthy eating, but they often require cumbersome external hardware.
Those who use oil specially produce food.
These issues reduce the adoption factor of the technology
and limit their potential as just in time interventions.
Therefore, the question arises
how can we design easily deployable,
scalable and ubiquitous interventions that can help users regulate their eating
behavior in real time without solely being based
on deliberate self-control?
Could the food itself tell us what to eat
and when to stop?
Inspired by personal research on sound and food perception,
combined with recent work on modulated auditory feedback,
we explore how changing the way we hear our own eating sound
can affect perception of food, texture, flavor,
and eating experience.
Older previous literature has demonstrated
undeniable links between sound and food perception.
These works have often focused on single experiential aspects
such as flavor or texture, and have included, for the most part,
external auditory stimuli such as background music.
Closed loop modify.
Auditory feedback has been shown to have strong subconscious
neurological effect during various behavioral task, including
speaking eye affecting fluency and motor control
singing by influencing pitch and prosody,
as well as breathing and eating.
Previous work in the context of food has shown that
applying a high bass filter on chewing sound in real time
has been associated with a high sense of crunchiness and freshness in foods.
Our work
takes a broader view on how modulating food, intrinsic auditory feedback
parameters can influence different aspects of eating beyond flavor,
such as deliciousness, craving
fullness, and eating speed.
The purpose of this work is to introduce and evaluate
the potential of auditory seasoning filters, meaning changing
auditory feedback of chewing sound in real time while eating.
In influencing eating behavior in flavor
perception,
we created various auditory seasoning filters
and tested them in a Pringle eating experiment.
We ran a mobile based study on 37 participants
to evaluate the self-reported effects on eating experience.
More information about the ethics protocol and auditory mode Implementation
is available in our paper.
Our results suggest that amplifying eating sound
increases all food, texture and flavor related parameters.
Crispiness, saltiness, sourness, mouthfeel, and overall flavor intensity.
Louder eating sound also led
the participants reporting feeling more full
for delays.
We did not observe any effect on perceived texture or flavor.
Comments suggest a decrease in eating speed.
Moreover, participants reported out-of-body experiences was it felt
like they were eating with someone else or that the chips tasted less flavorful.
Large reverb made the chips taste
less sour and led to less craving, says City.
Maybe Link was primitive reactions to environmental incongruence,
leading to a more alert behavior, less prone to eating,
or to a more culturally informed, restrained behavior in a large room
where one can be observed and therefore is more self-conscious.
Lopez filter led to less crispiness,
more mouthfeel and texture, and more fullness.
After eating.
Interestingly, both high and low pass filters led to more fullness,
which suggests that fullness may be mediated by attention to the food.
Although less suited for social eating, such a tool would be most relevant
in a situation where people already eat while listening to video or music
as they are less attentive to their own eating
sound.
Potential applications include interactive tool
for flavor enhancement, more mindful and slower eating.
Educational activities for
children to include food diversity,
high gastronomy experiences in restaurant
for augmented curated fine dining
or just in time interventions based on showing detection
for eating disorder support.
Auditory seasoning filters lay the groundwork for developing audio
based mobile interventions to regulate food perception and cravings
without the need for additional devices or deliberate
explicit self-regulation.