Cry Detection vs VOX: Understanding the Differences in Baby Monitors

July 10, 2024

When it comes to baby monitors, parents are often faced with a myriad of features and technologies designed to make monitoring their little ones easier and more effective. Two such features that frequently come up are Cry Detection and VOX (Voice Operated Exchange). While both serve the purpose of alerting parents to their baby’s sounds, they operate in distinct ways and offer different benefits. In this blog, we'll delve into the differences between Cry Detection and VOX, helping you make an informed decision about which feature best suits your needs.

What is Cry Detection?

How It Works
Cry Detection is a feature in baby monitors that uses advanced algorithms to specifically identify and respond to the sound of a baby crying. These algorithms are designed to differentiate between various types of noises, such as background sounds, talking, and actual crying. When the monitor detects crying, it sends an alert to the parent unit or smartphone app, allowing parents to respond promptly.
Precision: Cry Detection is designed to precisely identify the sound of crying, minimizing the chances of false alarms triggered by other noises.
Immediate Alerts: Parents receive instant notifications when their baby starts crying, ensuring they can attend to their baby’s needs as quickly as possible.
Peace of Mind: Knowing that the monitor can accurately detect crying can provide parents with peace of mind, especially during the night or when they are in another room.
Complexity: Cry Detection algorithms can sometimes be complex and may require periodic updates to maintain accuracy.
Cost: Monitors with Cry Detection features are often more expensive due to the advanced technology involved.

What is VOX (Voice Operated Exchange)?

How It Works
VOX, or Voice Operated Exchange, is a feature that activates the baby monitor when it detects any sound above a certain threshold. This threshold is usually adjustable, allowing parents to set the sensitivity level according to their preferences. When the monitor detects a sound, it turns on the audio and/or video feed, allowing parents to hear and see what’s happening in the baby’s room.
Customizable Sensitivity: The adjustable sensitivity levels in VOX allow parents to set the monitor to respond to various sound levels, from soft coos to louder noises.
Battery Efficiency: VOX helps conserve battery life by keeping the monitor in standby mode until a sound is detected, reducing the need for constant monitoring.
Versatility: VOX can pick up a wide range of sounds, not just crying, making it useful for detecting other activities or noises in the baby’s room.
False Alarms: VOX may trigger alerts for any sound above the set threshold, including background noises, which can result in false alarms.
Less Precision: Unlike Cry Detection, VOX does not differentiate between types of sounds, which means parents may receive alerts for non-urgent noises.

Comparing Cry Detection and VOX

Cry Detection: Highly accurate in identifying the specific sound of a baby crying, reducing the likelihood of false alarms.
VOX: Less precise, as it activates based on any sound above the set threshold, which can include non-crying noises.
Cry Detection: Limited customization, as it is specifically tuned to detect crying.
VOX: Offers adjustable sensitivity levels, allowing parents to customize the threshold for sound detection.
Battery Life
Cry Detection: May consume more battery due to the continuous operation of advanced algorithms.
VOX: Generally more energy-efficient, as the monitor remains in standby mode until a sound is detected.
Cry Detection: Typically more expensive due to the advanced technology and algorithms involved.
VOX: Often more affordable, as it relies on simpler sound detection mechanisms.

Which One Should You Choose?

The choice between Cry Detection and VOX ultimately depends on your specific needs and preferences.
Choose Cry Detection if: You prioritize precise alerts for crying, want to minimize false alarms, and are willing to invest in advanced technology for peace of mind.
Choose VOX if: You prefer customizable sensitivity settings, want to conserve battery life, and are looking for a more versatile and budget-friendly option.


Both Cry Detection and VOX offer valuable features for baby monitors, each with its own set of advantages and limitations. Understanding the differences between these technologies can help you make an informed decision that best suits your family's needs. Whether you opt for the precision of Cry Detection or the versatility of VOX, the ultimate goal is to ensure the safety and well-being of your baby, giving you the peace of mind you deserve.