Who We Are
Soundlevel is a trading name of KMR Digital Ltd, a company registered in England and Wales (company no. 17516682). Its registered office is 71–75 Shelton Street, Covent Garden, London, WC2H 9JQ. KMR Digital Ltd is the data controller for this site and is registered with the UK Information Commissioner's Office (registration ZC266758).
Your Microphone
Sound from your microphone is processed only on your device, inside your browser. It is never recorded to a server, uploaded, or shared. The mic test's 5-second clip stays in your browser's memory and is discarded when you leave the page.
Settings on Your Device
Your meter calibration (one for each microphone you calibrate) and your tuner settings (reference pitch and tuning) are saved in your browser's local storage. So are your metronome settings (tempo, time signature, sound, and the rest of its Settings). You can clear them by clearing site data.
Microphone Calibration Lookups
When you start the meter, it asks our server whether other people have shared a calibration for your microphone. The request contains your microphone's name as your browser reports it (for example "MacBook Pro Microphone") and your platform (for example Windows or iPhone). On Android it also contains your phone model, if your browser reports it. No audio is sent, and the lookup is not stored.
Shared Calibrations (Optional)
Sharing is off unless you choose it. After you calibrate against a reference sound meter, you can tick "I used a reference meter" and tap Share This Calibration. That sends the same microphone name, platform, and phone model as a lookup, plus your correction value in dB. No audio is sent or stored.
We don't store IP addresses. To limit each connection to 5 shares a day, we store a one-way hash of your IP address, the date, and a secret. The hash changes every day. When 3 or more people share a calibration for the same microphone, visitors with that microphone get the median value.
Analytics
We count visits with our own analytics, run on our server. It sets no cookies, saves nothing on your device, and doesn't fingerprint your browser. If your browser sends Global Privacy Control or Do Not Track, it sends nothing at all.
For each page view or action (for example starting the meter, a mic test result, or opening an Amazon link), we store:
- The event name and a few fixed details about it, such as which tool, tuning, or product
- The page path, without the query string, except campaign tags (utm_source, utm_medium, utm_campaign, and ref)
- The host name of the site that linked to you (for example google.com), never the full address
- Your country, from Cloudflare
- Your device type (phone, tablet, or desktop) and browser family (for example Safari), never the full user agent
- A visitor code and the time
The visitor code is a one-way hash of your IP address, your browser's user agent, the date, and a secret. It changes every day, so we can count unique visitors within a day but can't link your visits across days. We don't store IP addresses. Known bots are ignored. Events are deleted after 400 days.
We also use Cloudflare Web Analytics to count page views. It does not use cookies or track you across sites.
Advertising
We show ads from Google AdSense. Google and its partners may use cookies to show ads based on your visits to this and other sites. Visitors in the EEA and UK are asked for consent first.
You can opt out of personalized ads at Google Ad Settings. See how Google uses data from partner sites.
Affiliate Links
Some links go to Amazon. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Contact
Questions: [email protected]