Tenant Noise Alarm

Place our box in your Tenant's Area.
If their noise exceeds the set threshold, they will receive a warning.
At a higher threshold, it logs the noise violation.

Proposed MSRP:

$45USD

Touch Screen+Wifi

$70USD

The #1 Complaint

about Tenants

is their

NOISE!

The Competition:

Minut: $15/month

Options:

External microphone.
Touch Screen.
Wi-fi
Bluetooth.

LED lights on Side of Unit:

Power(white)
Wifi(blue)

Optional Gauge showing a Max of the loudest decibel reading that second.
- 40db(Green)
- 80db(Yellow)
- 100db(Red)

Two Different Models:

"Building Manager Units":

Some units known as "Building Manager Units" would have no settings.
Simply Plug in, and walk away.
Cheap. Sold in Bulk.
Admin would set the limits--preventing tenants from tampering with it.

"Landlord Units":

Dials that could be set to agreed upon warning, and infraction limits.

Set your own

Quiet Times.

We recommend

11pm to 7am

Software:

Calibration Mode (Hold Decibelmeter 1 foot away, and play a tone. Check your level reading matches the TenantAlarm's)
Testing Mode (Instant Decibel Reading)
On (Records Noise Volumes and Types)
View Graphs (Daily, Monthly, Yearly). (Elephants, Dogs, and Birds)
Sample

Weekly Noise

Time:

0:00

1:00

2:00

3:00

4:00

5:00

6:00

7:00

8:00

9:00

10:00

11:00

12:00

13:00

14:00

15:00

16:00

17:00

18:00

19:00

20:00

21:00

22:00

23:00

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Graph Icons:

Low Sounds
Stomping & Thumping
10-40 Hz

Mid Sounds
Yelling & Music
40-100 Hz

High Sounds
Alarms & Birds
100-140 Hz

Memes:

Pics:

Every Happy Tenant

comes Pre-Configured

with Default Settings.

Plug & Play!

Choose whether to

Remind them with a

Strobe-Light,

A Beep, or even

Funny Memes!

Politely ask your

Tenants / Roommates

to keep it down,

Immediately

Accurately.

Set your own decibel limits,

We recommend

40db as a warning.

80db an audible chirp &

A violation is recorded

Dylan, Please Order:

$10 Raspberry Pi Zero WITH Wifi
$4 Low Frequency Microphone
$2 Sound Card Adapter
High Amplification, 5-Volt, rail to rail op-amp.
Capacitor (22ųf)
Put bigger input coupling capacitor in sound card to support lower frequencies.
Figure out R1 and R2 from the diagram.
Research this
Research GPU_FFT
Research this

HELP! Multiple Units:

Put a meter in 3 suites, track the data. But HOW do we (graphically) show this data so tenant A can prove it is tenant 2 making the noise?
Think of a pretty way of saying: 95% of people do not require a fine in order to change their behavior. They simply require a warning in a timely fashion. If you can prove to them exactly when and how they are annoying others. In a fair manner. They will change their behavior

Drivers:

LCD Screen Drivers

Parts:

Other Parts

Science Links:

Nuttall windows for determining noise floor.
And the Approximate confined Gaussian window for logging quadratic interpolation of the signal to find the exact peaks.
We could bin the frequencies into music notes and create a midi file of the noise:
Link #1
Link #2
Competitor at Commericial Level ($4k)

Prototype Budget ($28):

Optional: $17 LCD Screen

Digital Audio & the Limits of Human Hearing:

Link
"The absolute threshold of hearing increases with age and hearing loss.
Interestingly, the threshold of pain decreases with age rather than increasing.
The hair cells of the cochlea themselves posses only a fraction of the ear's 140dB range;
musculature in the ear continuously adjust the amount of sound reaching the cochlea by shifting the ossicles, much as the iris regulates the amount of light entering the eye.
This mechanism stiffens with age, limiting the ear's dynamic range and reducing the effectiveness of its protection mechanisms.
The sensation of eardrums 'uncringing' after turning off loud music is quite real!"
Some nice diagrams can be found at the HyperPhysics site:
Link
That is that *WOOSH* you hear after turning off a computer with a loud fan, or after the yapping of a rat-sized dog.

MicroController Options:

Chip Selection
Option #1
Option #2
Chip: 8 bit AVR CPU
Operating Volts: 1.8 to 5.5 volts
Pin count: 5 to 32
Max resolution: 10 to 16 bits
Digital audio converters: 1+
Internal voltage reference: yes
Comparators: 1+

Hotel Option:

When a hotel guest gets a noise complaint.
Security shows up at the door, ordering them to keep it down.
I propose, they would leave a meter in your room to warn you if you get loud again
"You will much rather this thing tell you to keep it down, then me having to come up again"

Original Analogue (Cheap)Option:

Adjustable Potentiometers
Set one, and get a Warning Strobe light(Suggestion 60db)
Set two, and get a Violation Beep (Suggestion 80db)
Auxiliary Plug with a Strobe to put in Another Room / Floor
Optional, a Odometer Style Counter of warnings.
Outdoor Options. For Construction Noise, Party Houses, Motorcycles, Arenas, Festivals,hotels with attached bars etc.