Rather than representing the full waveform, or shape, of sound information in the way that most conventional, full-spectrum audio recordings in any application do, zero-crossing is a compact way of representing only the most prominent frequency in a recording by noting the points in time at which a sound wave has crossed a reference amplitude a certain number of times.

Because the zero-crossing format is only able to represent one frequency at a time, full-spectrum is particularly preferable for recording multiple sources of sound simultaneously, such as multiple bats vocalizing in the same area, or a single bat in a noisy environment.

• Why can't I use an adapter to connect a USB-C Echo Meter Touch to my Lightning iOS device?
• What adapter do I need for my Echo Meter Touch module and Android or iOS device?
• What type of data port does my phone or tablet have?
• Can I use Echo Meter Touch modules with USB connectors with iOS devices?
• What iOS devices are compatible with my Echo Meter Touch module?
• What type of plug does my Echo Meter Touch module have?
• How do I update the firmware on my Echo Meter Touch module with USB to add iOS compatibility?
• Are there acoustic differences between the first- and second-generation Mini Bat recorders?
• Will the Lithium-ion lids I used with first-generation Minis fit the new models?
• Will the security bracket accessory I use with first-generation Minis be compatible with the new models?
• Will Wildlife Acoustics continue to repair and support first-generation Minis with replacement parts?
• Are there size differences between the first- and second-generation Minis?
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