Using Digiducer® USB Digital Accelerometer with TwistedWave Recorder App By: Ronald Nelson November 05, 2015, 0 Comments
TwistedWave Recorder App is audio editing software and is optimized for the Digiducer USB Digital Accelerometer made for the Mac, iPhone/iPad, and several web browsers. Offered on both portable devices and via online access, TwistedWave serves as a versatile audio recorder software providing scaled WAV files with embedded calibration information.
The online version of TwistedWave has a free, limited functionality version that is easy to use. Just open a new document in TwistedWave’s online version using Google Chrome, Mozilla Firefox, Internet Explorer, or Safari and get started. Before recording, make sure to select the Digiducer as the audio input. Follow audio -> select audio input and choose “333D01…”
After making sure the Digiducer has been selected, begin acquiring vibration data by selecting the record button. Once the desired amount of data has been collected, download the recording as a WAV file. Make sure the download settings are also properly selected. For optimal results, turn off file compression and choose a bit depth closest to 24. For the free version, 16-bit is the closest option. WAV file specifications such as stereo capabilities and 32-bit depth can be made available for a subscription fee.
The iPhone/iPad version of TwistedWave is also available for free on the App Store. Without specifying the recording device, the iPhone/iPad version will default to the USB audio input – which will be the Digiducer when plugged in. Settings need to be changed, such as saving to 32-bit audio in order to later export 24-bit data. To start recording, open the app on your Apple product and click the ‘+’ button on the bottom-left portion of the screen. For the best results, select a sampling rate most appropriate for the testing situation. Afterward, select stereo for two channel analysis. Now begin recording.
Recorded data can be sent in a variety of ways including email and iTunes File Sharing. More transfer methods, like Dropbox and SoundCloud, are available through in-app purchases. Before exporting the audio file, make sure the WAV file is properly formatted. Follow Audio Export (top right hand side) -> Format and select “WAVE.” Then follow Compression/Bit Depth and choose 24-bit. More specifications are available with the purchase of TwistedWave Audio Editor, which offers all data transfer methods.
For any of the Twisted Wave applications, the exported WAV files have the embedded calibration information for the Digiducer. These WAV files can then be analyzed via other optimized software found at http://digiducer.com/pages/software.