Listening Experiment for Electric Motorcycles

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UoS_Alex

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Hi All,

We at The University of Salford are conducting an experiment which is part of a project all about the design of algorithms that create electric motorcycle sounds, and we could do with some volunteers!

What is the purpose of this study?
The study is part of a project exploring and evaluating the design of algorithms which synthesise alert sounds for electric motorcycles. Traditional internal combustion engine (ICE) motorcycles are commonly loud, with a distinctive sonic character. However, electric vehicles can be significantly quieter and could sound different from an ICE. We are investigating the design of synthetic sounds for electric motorcycles for both safety and aesthetic purposes.

Who is running the study?
The study is run by researchers from the University of Salford in the UK, in collaboration with a commercial partner.

What will happen to me if I take part?
We ask you to complete an online survey. If you choose to take part, you will be presented with various synthesised vehicle sounds. Some of these might sound more like a real engine, others might be more experimental. They are not necessarily final sounds to be used on electric motorcycles, but your responses to them will help us in the design process.
After listening to each audio sample, you will be presented with a list of 7 scales with opposite words at extremes of the scale (e.g. “fast” and “slow”) and asked to rate the sound on each of the scales. You will be able to listen to each of the sounds as many times as you need.
We ask that you use headphones to listen to the sounds and to take care to make sure that the sound levels are comfortable.
There are 20 sounds in total and the whole survey should take between 10-15 minutes. You will have the right to withdraw at any time or ask for your data to be deleted for any reason.

What are the eligibility criteria?
Participants must be at least 18 years old.

Do I have to take part?
We hope that you will take part, but participation is entirely voluntary.

What are the possible disadvantages and risks of taking part?
This study has been reviewed and granted approval by an ethics panel at the University of Salford.
There are no consequences for you if you decide not to take part, or later choose to withdraw your responses. You do not need to give a reason for non-participation or withdrawal.

What are the possible benefits of taking part?
The findings from this study will help us better understand how people respond to different types of engine sounds. This will help us develop acoustic alert sounds for electric motorcycles, which will likely be beneficial for pedestrian safety and to improve the soundscapes of the future.

Will my data be stored securely?
The collected data will be stored only on secure servers provided by the data collection service (Gorilla) and on password-protected university asset computers and University of Salford IT network. We will not collect any identifying characteristics such as name or address and all your responses will be anonymous. Because of this, once you have submitted all of your responses, we will not be able to identify you and withdrawing your data will not be possible.
Anonymised data will be kept as long as considered necessary by the research team to support further analysis and publication; it may also be used in future projects.

What will happen to the study results?
The findings from this study will be used to inform future research and product development related to this topic. The results will be written up in an internal report, will be shared with project stakeholders, and may be published in conference papers or academic journals. Any information made available in this way will be strictly anonymous i.e. we will never publish anything that could identify a response as coming from you personally or show that you have taken part in this study.

What if I have a question?
If you have concerns or questions about this experiment, either before or after taking part, please get in touch:
Dr Zuzanna Podwinska, Project Researcher [email protected]
Dr Antonio Torija Martinez, Academic Lead [email protected]

If that sounds good to you, a link to join the online experiment is here: https://research.sc/participant/login/dynamic/23C2AE9C-DFB7-42F8-9665-2FEB4483177E

Thanks!
 
No interest! I opposed the "Bell the Hybrid" act that makes all EVs and hybrids generate synthetic noises below 25 mph. I was in the discussions when the blind and anti-Prius idiots pushed it through. It is a false premise that has left the pedestrian death and injury rate untouched while masking the true fault, "A" pillars:
upload_2024-7-17_10-57-55.webp

At the time, the pedestrian accident data showed a bias based on which side the driver sat. The USA has left hand side drivers and the Japanese, right hand drivers. Yet the pedestrian accident rate was higher in left turning, left hand USA driver accidents and right hand Japan drivers had more in right hand turning accidents.

Every human eye has a blind spot that we barely notice because we have two eyes. But the "A" pillar partially block one eye like a standard eye exam:
upload_2024-7-17_10-54-25.webp

In a turn, atleast one eye is partially blocked by the closer, "A" pillar. This leaves the blind spot in the other eye to make pedestrians and everyone else 'invisible.'

So no, I won't take a survey that in anyway claims "noise" solves a problem while the deadly driver's eye problem remains.

Bob Wilson
 
Not sure I see a reason not to tackle one issue just because another issue may also need addressing.
I live on a quiet dead end street that people often walk along and they often don’t hear my slowly moving car approaching until the VESS alerts them. I think having a sound is a great idea to prevent them accidentally moving in front of me at the last moment. Way better than having to tap the horn. Same for the backing-up beeps.
I also ride a quiet motorcycle (Honda Goldwing) and I really hope those developing the sounds don’t fall for the myth that loud motorcycles somehow save lives. (On a motorcycle forum I would now be putting on my flame retardant suit )
 
I really hope those developing the sounds don’t fall for the myth that loud motorcycles somehow save lives
We agree on this. Also, I have no problem with 'sounds' like ice cream trucks. Regardless, I look forward to your analysis of the survey.

Bob Wilson
 
The low-speed noise compensates for the lack of tire noise, so I feel it's a fair compromise. The idea of synthetic noise to "improve" the driving experience for electric vehicles is misguided in my mind, a sad attempt to cling to the past. Do any modern ICE vehicles come with smoke effects to recreate the pre-catalytic converter days of driving? Other than the idiotic coal rollers, I mean.
 
While I can see why they are doing it. I find the noise to be annoying, especially the ridiculous loud backup noise.
 
The low-speed noise compensates for the lack of tire noise, so I feel it's a fair compromise. The idea of synthetic noise to "improve" the driving experience for electric vehicles is misguided in my mind, a sad attempt to cling to the past. Do any modern ICE vehicles come with smoke effects to recreate the pre-catalytic converter days of driving? Other than the idiotic coal rollers, I mean.

I actually really enjoy the noise, even if I’m the only one who hears it. Also it would be nice to alert other drivers that I am, erm, ready to have fun if they are… Manuals made that much easier, and yes, it’s a relic of the past, but there isn’t another universally accepted communication for such a alert.

But back on topic, I don’t think I can really comment on the bike sound, but I will pass it along to some of my bike friends


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Having heard the 'melodies,' I find them amusing. And then I remember a pedestrian who was hit and killed in crosswalk by a Prius driver who was making a left turn when the light turned green.

Bob Wilson
 
Having heard the 'melodies,' I find them amusing. And then I remember a pedestrian who was hit and killed in crosswalk by a Prius driver who was making a left turn when the light turned green.

Bob Wilson

To be fair, I am sure this happens fairly frequently regardless of powertrain, but newer technology certainly does garner more media attention (eg car battery fires break the news, but ICE fires are substantially more common and are hardly reported on because its normalized).

With how quiet ICE cars are a low speeds, I honestly don’t know if pedestrian warning sounds are just a BEV problem.
A car driving past on in my neighborhood (even at 10-15mph) I can’t hear the gas engine, but I can hear the “chorus” of the EVs/hybrids. But mostly it’s just tire noise.



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