Libquiet
Languages and libraries
audio data transmission library
SHOW HN2016
How HN took it
5 positive, 11 neutral or asking, 1 mixed, 3 critical, out of 20 comments about the project. Thread score +0.07.
Idea: 4 for, 1 againstPerformance: 0 for, 1 againstExecution: 1 for, 0 againstDesign: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Useful for device pairing without displays
From 2 comments
Magic ! You can broadcast data without a network. Edit: I actually prefer this to the clumsy QR code scanning, maybe I'll use it for device pairing. Would also be a great tool to…
justsaysmthng on HNYeah! I was thinking the same thing -- this could work quite well for pairing. Thanks for the kind words :)
brian-armstrong on HN
Works without networks, e.g. concerts or arenas
From 2 comments
This is definitely one of the biggest advantages. Though transmission is obviously much slower, it's still an incredible feature to have in cases where networks don't exist or…
tedmiston on HNYou could also transmit to a whole room full of people without needing to connect to any networks or devices.
premasagar on HN
Objections
Ultrasonic signals are audible to some listeners
From 2 comments
In your app, the "ultrasonic" signal is still audible to me. On that youtube video, I stop hearing stuff around 17,5kHz.
M4v3R on HNYep that's definitely true, but on average 17kHz is the cut off for 19-20. I know first hand that there are uncommon people, like me. Through an accident with way too many…
gravypod on HN
Ultrasonic signals attenuate quickly over air
From 1 comment
Pretty cool. The issue with ultra sonic transmission is attenuation destroys the signal.
samfisher83 on HN
Requests
Bitrate and range measurements
From 3 comments
Q1: Do you have some BER versus SNR measurements, especially for the speaker->mic path through air? Q2: For ultrasonic: Most cheap ultrasonic transducers are very narrow band…
dbcurtis on HNWhat's the bitrate and range one can achieve with this? What could be the advantage beyond those of bluetooth (low power) or wifi (range)? What could be applications of this?
fsiefken on HNWhat bitrate are you able to achieve?
Hydraulix989 on HN
Questions
What bitrate and range can be achieved
From 2 comments
What's the bitrate and range one can achieve with this? What could be the advantage beyond those of bluetooth (low power) or wifi (range)? What could be applications of this?
fsiefken on HNWhat bitrate are you able to achieve?
Hydraulix989 on HN
Whether it works over compressed connections like VoIP
From 1 comment
Would this work over a compressed (such as VoIP) connection, or even RF radio? Imagine sending a picture over an existing public safety radio network if Internet is disrupted.
telecuda on HN
Alternatives named
Google Chromecast ultrasonic pairing
From 2 comments
Really cool project. Using ultrasonic sounds to send data isn't new. Even chromecast is using it to pair to phones without wifi or bluetooth:…
TheGuyWhoCodes on HNGoogle uses sound for pairing - seems to work okay in reasonably sized room with all kinds of surfaces…
Maxious on HN
minimodem
From 1 comment
There's also minimodem for GNU/Linux systems: http://www.whence.com/minimodem/
absorber on HN
Google Tone
From 1 comment
I love the way people can still use old connection ports (jack for instance) to find new usages. Made me think about Google Tone :…
cocoggu on HN