What is Call Quality (Mic Performance)?
Call quality is all about how clearly your voice comes through when you’re on a phone call or video meeting using wireless earbuds or a headset. With remote work and video conferencing now part of everyday life, mic performance has become just as important as how good your music sounds. The number of microphones, their placement, and the noise reduction technology built into your earbuds all play a role in determining call quality. If you’ve ever been told “you’re breaking up” or “there’s a lot of background noise,” that’s a call quality issue. Modern earbuds tackle this with multiple mics, beamforming, and AI-powered noise reduction to isolate your voice from your environment.
In-Depth
Types of Microphones in Earbuds
Wireless earbuds use several types of microphones to capture your voice:
- MEMS microphones: Ultra-compact semiconductor microphones. These are the standard in virtually all wireless earbuds today due to their tiny size and low power consumption.
- Beamforming microphones: A system that uses multiple mics working together to focus on sound coming from a specific direction – namely, your mouth. This helps separate your voice from ambient noise.
- Bone conduction sensors: These detect vibrations from your jawbone rather than airborne sound waves. They’re particularly effective at rejecting wind noise and other environmental interference.
Most earbuds have one to three microphones per side. Higher-end models tend to pack in more mics, using the additional inputs to better separate speech from noise.
Call Noise Reduction vs. Active Noise Cancelling
This is a distinction worth understanding. Active noise cancelling (ANC) reduces the noise you hear. Call noise reduction, on the other hand, removes noise from the audio sent to the other person. They’re two different systems solving two different problems.
Recent models increasingly use AI and machine learning for call noise reduction. These algorithms can identify and strip out cafe chatter, wind, keyboard clicks, and other common background sounds in real time – a significant upgrade over older, simpler filtering methods.
Factors That Affect Call Quality
Call quality isn’t just about the mic itself. Several factors come into play:
- Number and placement of microphones: More mics generally means better noise isolation accuracy
- Noise reduction algorithm: AI-based processing makes a noticeable difference compared to basic filtering
- Bluetooth codec: During calls, the HFP (Hands-Free Profile) is used. Models supporting mSBC (HFP 1.6+) deliver noticeably better voice quality than the older SCO standard
- Distance from mic to mouth: Stem-style earbuds position the mic closer to your mouth, which naturally improves voice pickup
- Fit stability: If your ear tips don’t seal properly, the earbud can shift, moving the mic away from the optimal position
Earbud Design and Call Performance
The form factor of true wireless (TWS) earbuds directly impacts call quality. Stem-style designs extend downward toward your mouth, giving microphones a better angle and shorter distance for voice capture. Compact, rounded designs keep everything closer to your ear, which can be a disadvantage in noisy environments. If call quality is a top priority for you, stem-style earbuds are generally the safer bet.
How to Choose
1. Check Mic Count and Noise Reduction Tech
For solid call quality, look for earbuds with at least two microphones per side and AI-powered noise reduction. Product pages that mention “call noise reduction,” “clear voice,” or “voice isolation” are good indicators. Reviews and call quality tests from reputable tech outlets are also helpful since manufacturers don’t always publish detailed mic specs.
2. Consider a Stem-Style Design
If you’re frequently on calls for work, stem-style earbuds are worth prioritizing. The design places microphones closer to your mouth, which is a straightforward physical advantage. If you prefer a more compact look, just be aware that call quality may take a slight hit in noisy settings.
3. Look for Wind Noise Protection
If you take calls outdoors regularly, look for earbuds with wind noise mitigation features. These include wind shield meshes over the mic ports and bone conduction sensor integration. Without these, even a moderate breeze can make your voice nearly unintelligible to the person on the other end.
The Bottom Line
With remote work and video calls now routine, mic performance deserves just as much attention as sound quality when picking earbuds. AI noise reduction and smart mic placement can make a dramatic difference. If you’re on calls frequently, prioritizing call quality will pay off in everyday comfort and professionalism.