![]() ![]() You can pause at any time by using the Pause button and examine the signal in greater detail by zooming in and out by using two-finger pinch gestures for amplitude and/or time scales. Play option will open a new screen similar to live data view and immediately start playing the recording. Here you can change the name of the file, add a comment to the file, and see other details such as the sampling rate, the length of the file, the date it was created, bits per sample, etc.īesides File Details, you can also replay your recording (Play), analyse it, share it with other mobile devices or your desktop computer or delete it individually or all together. If you select the File Details option, the application will show you details of the recording. There, all your recordings will be aligned according to early dates.Īfter you have chosen one of the recordings, the application will offer you numerous options.Now let's take a look at each option. wav format).Īll your recordings can be easily accessed by using the Recordings tab at the bottom-right corner of the screen. When you tap on the red bar, the application will stop recording and save data into a raw audio file (. It’s very easy - all you have to do is to click on the Red circle in the upper-right corner, right next to the Settings tab. During the recording, the application will display a red bar on the top of the screen with the time elapsed since the beginning of the recording. So you’ve set up your experiment, turned on the Spikerbox, hooked it to your Chromebook, enabled proper settings and received awesome spikes. Fourier analysis converts a signal from its original domain (often time or space) to a representation in the frequency domain and vice versa. ![]() Note, if the time scale is set to 3 seconds, the application will display 6 seconds of signal on the screen since the time scale is exactly half of the screen wide.Īlso in the Real time view you’ll be able to see FFT and enable Thresholding mode.įFT (Fast Fourier transform) is an algorithm that computes the discrete Fourier transform of a sequence, or its inverse. This flexibility enables you to examine the signal in full depth, from a single neuron/muscle spike to a series of spike bursts. The time scale can be changed from 0.1 ms to 3 seconds. To zoom in and out and examine the signal in greater detail, use + or - sign for amplitude or time scale. Signal waveform will be displayed along with the horizontal time scale at the bottom of the screen. When you open the Spike Recorder it will automatically be in the View/Record screen and will display the waveform of the signal captured in real time. ![]() you’ll see that the band-pass filter cut-off frequency will automatically adjust, reducing the noise and allowing for smoother experimenting.ĭepending on your country’s “ mains” frequency, you can choose to enable the notch filter (50 or 60 Hz) which will automatically attenuate signals in that frequency range (noise coming from “ the mains”) and prevent it from interfering with your experiment.Īnd last but not least, you can choose which type of color your channel will be. When you click on the little “ Gear” icon, in the upper-right corner Settings tab will open and in it you can choose which time of signals you want to get.Ĭlicking on each setting like EMG, Plant, ECG, etc. The other one is labeled with “ Smartphone”, which plugs into your Chromebook.Īn important thing to mention is that the green audio cable is only a mono audio input and it doesn't provide a stereo audio connection or 2 channels.īut before you jump into your experiments and start receiving spikes in Spike Recorder, there is a neat little feature in the Settings tab, which will help you a lot with your experiments. In this case, like attracts like! The end labeled with “ SpikerBox” goes into the SpikerBox. There are 2 labels marked on the Green audio cable. But be careful, there is a specific direction for this cable connection and it’s important to connect it according to labels. The Green Smartphone cable comes within every SpikerBox kit or bundle. You will need to do both in order to record from the Green Smartphone cable, and save your precious data! The next step is to properly connect your chosen Spikerbox and connect it with the Green Smartphone cable. Once installed, the app will prompt you to allow access to your audio & microphone input, as well as to read your files. Search for “Spike Recorder” in the Play Store, check that it is from Backyard Brains, and click install. It has the same features, with slightly changed looks.įirst step you’ll have to do is download the Spike Recorder from the Play Store. Spike Recorder for Chromebook is very similar to Spike Recorder for Android. ![]() Recording spikes on your Chromebook with our Spike Recorder is pretty easy. Getting started with Spike Recorder for Chromebook ![]()
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