DonValleyRainbow
Senior Member
I dunno why this is making me laugh so much. "The Eglinton Crosstown - Loud as a Quack."
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I dunno why this is making me laugh so much. "The Eglinton Crosstown - Loud as a Quack."
A Torontonian Now
Senior Member
That graphic leads me to ask the following completely unimportant question:
Why do they have what appears like a goose as the image for a duck?
I'm pretty sure geese honk instead of quack. Also, a honk is typically louder than a quack. They're doing themselves a disservice by not showing a picture of a mallard.
Also, I now feel compelled to go for a walk in High Park and carefully consider whether the quacks are exactly three times the volume of the rustling leaves.
Why do they have what appears like a goose as the image for a duck?
I'm pretty sure geese honk instead of quack. Also, a honk is typically louder than a quack. They're doing themselves a disservice by not showing a picture of a mallard.
Also, I now feel compelled to go for a walk in High Park and carefully consider whether the quacks are exactly three times the volume of the rustling leaves.
DonValleyRainbow
Senior Member
I'm pretty sure people dislike geese more than ducks as well, so that also contributes to the disservice.
And 60 dB ≠ 20 db*3. Decibels are on a log scale.
AlvinofDiaspar
Moderator
dB is logarithmic - that's 3 orders of magnitude, not 3x.
AoD
EDIT - I see DVR gotten to it!
someMidTowner
¯\_(ツ)_/¯
Napoleon
Active Member
That is true of the sound pressure levels; however, humans also perceive sound roughly on a logarithmic scale (Weber-Fechner). That means the perceived loudness is actually around 3 times louder.
Anyway, what a strange comparison. 60 dB is more like conversation feet or an air conditioner 30 meters away. That's a quiet train
Monarch Butterfly
Superstar
What about the terrible "noise" caused by the wind?
salsa
Senior Member
What's making me laugh is that this forum has now turned into a discussion of the noise levels of a duck, a goose, or wind.
robmausser
Senior Member
8-10 years??? I thought city council wanted the Eglinton West and East extensions to be done by 2021.
crs1026
Superstar
African or European? Laden or unladen? ;-)
Yeah, this slide got some furrowed brows at the PIC. ML did a lot better on the Davenport diamond project to explain this..... the reference point of a truck at 15m is relevant, since the issue was residents (who are at some greater distance) worried that it would make traffic noise on Eglinton greater.
- Paul
- Paul
Attachments
TheTigerMaster
Superstar
Something I noticed about the ridership projections for Crosstown East and West is that East is projected to have about 43,000 riders per day, while West is projected to have 60 to 70,000 riders. This doesn't really make sense to me, as:
- Crosstown East has much higher peak ridership
- There's more development along Eglinton East
- There's been far more bus ridership coming into Kennedy, than there is coming into the Mt. Dennis corridor.
Any ideas?
- Crosstown East has much higher peak ridership
- There's more development along Eglinton East
- There's been far more bus ridership coming into Kennedy, than there is coming into the Mt. Dennis corridor.
Any ideas?
A Torontonian Now
Senior Member
Now the matter is even more confused. The rustling leaves which were compared to the volume of a quack (20 dBA) were significantly louder than the rustling leaves which are being compared to the volume of a conversation at 1 m (10 dBA). Do I trust therefore that a quack and a conversation at 1 m are the same volume? Or do we just need more information about the varieties of trees in question? Or windspeed?
And what does this all mean about the volume of a train?
Voltz
Senior Member
8-10 years??? I thought city council wanted the Eglinton West and East extensions to be done by 2021.
They must still be sticking with that ridiculous Alternative Procurement P3 that Metrolinx has a fetish for, these timelines are much longer than when the TTC was going to build them.
DonValleyRainbow
Senior Member
It means that whoever thought it was a good idea to use a log scale to measure sound was a quack.
crs1026
Superstar
This is pure speculation - but -
Suppose that in the east, the modal share already favours transit. The variable driving ridership growth is new development (and as a secondary factor, improved trip time). If the people already present use transit, the people who arrive with development will use it too.
Now suppose that in the west, the modal share does not favour transit. There is a large potential customer base already on hand (the airport jobs areas, plus the airport itself). The variable driving ridership growth is the belief that an LRT will capture added market share (fewer autos, more LRT riders). The people who are present will begin to use transit. Development may bolster this, but development is not the driving variable.
I suspect that the projection for the east may be higher confidence than the projection than the west. We don't know how attractive the new LRT will be compared to driving, that depends on its routing (tbd north of Eglinton), the number of stops, the travel time, etc etc. We do know that the buses in the east are full, and people will accept a change to LRT.
Just my hypothesis.
- Paul