Kumar et al., Mixer Board Showcase: Comparing Frequency Modulation Techni..., Haptics Symposium 2024
Channel: IEEE Haptics Symposium
Date: 2024-04-05

Haptics Symposium 2024
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https://www.hapticssymposium.org/
In this demo, we present a ’Mixer Board’ setup to compare Pseudo-frequency Modulation (PFM) with Continuous Frequency Modulation (CFM), two frequency modulation techniques for vibrotactile feedback applications. While CFM may feel more effective, PFM offers a simpler alternative with minimal real-time processing demands. It can create an illusion of continuous frequency change by modulating only the amplitudes of two frequency components. However, the choice of frequencies can influence PFM’s effectiveness, which we can better understand using this setup. We will also demonstrate an increased perceptual contrast between the two techniques when applied to audio-based feedback, highlighting the higher acuity of our hearing sense.