Measure sound pressure level of a room or an environment with this neat little Phidget that plugs into a VINT port (See the "Compatible Products" tab for a list of VINT Hubs). You could also use it to detect the occurance of sudden noises. The sensor returns data in dB (SPL), which is decibels relative to the quietest noise a human can hear.
The Sound Phidget also reports data in dBA (SPL) and dBC (SPL). These are special standardized weightings of the frequency range created for specific purposes. For example, dBA puts less emphasis on lower frequencies that the human ear doesn't pick up, making it ideal for measuring loudness as heard by your ear.
This Phidget is also capable of analyzing specific frequency bands of sound. Every time data is sent to your program, an array of 10 values will be sent, each one corresponding to a different frequency band ranging from 31.5 Hz to 16kHz centered.
|Sound Level Min||* 34 dB|
|Sound Level Max||102 dB|
|Sampling Interval Max||1000 ms/sample|
|Sampling Interval Min||100 ms/sample|
|Current Consumption Max||26 mA|
|Current Consumption Min||(unconfigured) 16 μA|
|Operating Temperature Min||-20 °C|
|Operating Temperature Max||70 °C|
|SoundSensor||Visual Basic .NET||Windows||Download|
|Date||Board Revision||Device Version||Comment|
|June 2017||0||101||Product Release|
|June 2017||0||102||Fixed issue where board continually reset|
Welcome to the SND1000 user guide! In order to get started, make sure you have the following hardware on hand:
Next, you will need to connect the pieces:
Now that you have everything together, let's start using the SND1000!
In order to demonstrate the functionality of the SND1000, the Phidget Control Panel running on a Windows machine will be used.
The Phidget Control Panel is available for use on both macOS and Windows machines. If you would like to follow along, first take a look at the getting started guide for your operating system:
Linux users can follow the getting started with Linux guide and continue reading here for more information about the SND1000.
After plugging the SND1000 into your computer and opening the Phidget Control Panel, you will see something like this:
The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:
The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.
Double-click on the Sound Sensor object, labelled Sound Phidget, in order to run the example:
General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:
Depending on your application, you may be interested in acoustic data with weightings applied. The SND1000 returns a SPL value with the A-weighting applied, C-weighting applied, and with no acoustic weighting applied.
The microphone on the SND1000 is slightly more responsive to some frequencies than others. The following graph illustrates this difference:
This Phidget is a smart device that must be controlled by a VINT Hub. For more information about VINT, have a look at the VINT Primer. You can use a Phidget Cable to simply and easily connect the two devices. Here's a list of all of the different VINT Hubs currently available:
Use a Phidget cable to connect this device to the hub. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system.