Sound Diagnosis: Machine Noise

Something in your garage, basement or driveway is making a noise you can't place. Sound Diagnosis records it, measures it, and keeps everything you learn about it in one place: for your car, furnace, water heater, washer, dryer, fridge, garage door, AC or sump pump.

RECORD OR IMPORT
Record the noise while it's happening, with guidance on screen and a live level meter, or import a WAV, MP3 or M4A you already have.

KNOW IF THE TAKE IS USABLE
The app measures the recording itself (level, peak, clipping, background noise and length) and tells you plainly whether it's usable before you read anything into it.

SEE THE SOUND
A waveform, a frequency spectrum with the dominant peaks in Hz, a spectrogram, and the stretches that stand out, each one playable with a little audio either side. All analysis runs on your phone.

MATCH YOUR SETUP
Each recording keeps how it was made: mic position, distance, orientation, surroundings and what the machine was doing. Before you record the same machine again, the app shows the earlier setup so you can repeat it, and it tells you when two recordings can't be compared instead of comparing them anyway.

SEE HOW IT SETTLES (PRO)
Once a machine has a few comparable recordings, see the middle and the spread of recent takes beside the current one. That's a record of what you have measured, not a healthy range, a tolerance or a fault threshold.

NARROW IT DOWN
Answer a few questions about when the noise happens and what changes it, and get provisional troubleshooting checks for that kind of machine, with safety checks first.

COMPARE BEFORE AND AFTER (PRO)
After a repair, record the same machine again and view both takes side by side: waveforms, spectra and key measures.

SHARE ON YOUR TERMS (PRO)
Choose exactly which details and which recordings go into a PDF or text summary for a mechanic, landlord or technician.

PRIVATE BY DESIGN
No account, no ads, no analytics. Recordings stay in the app's private storage on your phone until you choose to share them.

FREE AND PRO
Recording, analysis, setup notes and troubleshooting checks are free for up to two machines. A one-time Pro purchase adds unlimited machines, how it settles, before-and-after comparison and export.

WHAT THIS APP DOES NOT DO
Sound Diagnosis measures sound and suggests provisional checks. It cannot confirm a failed component, certify that equipment is safe to operate, or establish that a repair worked. Have a qualified professional verify the cause before you act on it.

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