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Oscilloscope demo
Take your first steps in using the labAlive environment. Adjust some scope settings and see how the scope displays the signal.
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Signal-to-noise ratio demonstrator
How does music or speech sound in different signal qualities? Recognize that it's the signal-to-noise ratio (SNR) that matters. Observe the visual and auditive impact of added noise.
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Analyze audio signals
Analyze audio signals in the time and frequency domain. Play any music wave file, microphone line-in or signal generator waveform. This audio software visualizes the signal in an oscilloscope and in a spectrum analyzer.
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Peak-to-average power ratio of signals
The Peak-to-average power ratio (PAPR) of a signal is the peak power divided by the average power.
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LTI system - RC low-pass filter
Measure amplitude and phase of the output sine wave signal using an oscilloscope. Compare the results with the transfer function representing the linear time-invariant (LTI) system.
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Matched filter in digital communications
In this scenario, a pulse is sent and shall be detected at the receiver. It might represent a symbol for digital transmission or a radar pulse. The received pulse might be ...
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Uniform quantization
How does music or speech sound for different quantization resolutions? Explore how the quantization error degenerates the audio signal and each bit per sample improves the Signal-to-quantization-noise ratio by 6 dB.
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Non-uniform quantization
Explore how the use of compressors and expanders (companding) improves the signal quality compared to uniform quantization - especially for quiet voice. Logarithmic Laws - piecewise linear approximation.
