Why Call Quality Is the Real Battleground for AI Earbuds
For all the advances in noise cancellation earbuds, wireless call clarity has remained their weakest link. Commuters battle wind and traffic noise, office workers fight chatter and HVAC hum, and callers on the other end often hear a processed, distant version of your voice. Anker’s Soundcore Liberty 5 Pro and Liberty 5 Pro Max tackle this exact pain point by putting call performance at the center of their design. Instead of treating AI as a gimmick, the earbuds use it as the core engine for voice capture, noise suppression, and on-device control. Early impressions and a Liberty 5 Pro review highlight very strong call performance alongside improved noise cancelling and sound quality, but the focus is clearly on solving speech intelligibility first. In a crowded market of look‑alike buds, Soundcore is betting that consistently clear conversations matter more than yet another marginal bass boost.
Inside the THUS AI Chip: 150x Compute for Voice and Noise
At the heart of Soundcore’s new strategy is the in‑house THUS AI chip, purpose‑built for audio AI workloads. Using a Compute‑In‑Memory architecture, it delivers up to 150 times more processing power than the previous generation designs. That surplus isn’t used for flashy visuals—it is dedicated to matrix-heavy tasks like real‑time noise modeling, beamforming, and voice enhancement. Paired with eight MEMS microphones and two bone‑conduction sensors, the chip can distinguish the wearer’s speech from street noise, wind, or office conversations, then reconstruct a clearer vocal signal for the person on the other end. The same processing pipeline powers Adaptive ANC 4.0, which continuously analyzes ambient noise hundreds of thousands of times per second to recalibrate cancellation. Crucially, many voice controls and AI functions run entirely on-device, eliminating server round‑trips and enabling faster, more private interactions that directly benefit everyday call quality.
From Lab Records to Real‑World Wireless Call Clarity
Soundcore’s marketing points to a Guinness World Records certification for the Liberty 5 Pro series, citing the highest speech quality score for true wireless earbuds in objective tests. The earbuds were also evaluated under ETSI TS 103 106 speech quality standards, where Soundcore claims excellent voice clarity and strong noise suppression versus flagship rivals in simulated noisy environments. Lab benchmarks, however, only matter if they translate into real‑world calls. Early reviewers report that the Liberty 5 Pro and Pro Max deliver genuinely top‑tier voice performance, describing calls as “truly top‑notch” with great caller intelligibility even in challenging surroundings. The THUS AI chip’s ability to isolate speech from complex backgrounds gives the buds a tangible edge when you are on the move or in open‑plan offices. This direct attack on the core weakness of most AI earbuds call quality could become the defining reason people choose these models over better‑known brands.
Liberty 5 Pro vs Pro Max: Touchscreen Cases and Everyday Use
Although the Liberty 5 Pro and Liberty 5 Pro Max share the same earbuds—and therefore nearly identical call, ANC, and sound performance—their cases change how you use that AI power. The Liberty 5 Pro includes a compact charging case with a built‑in touchscreen, letting you tweak ANC modes and key settings without reaching for your phone. The Liberty 5 Pro Max goes further with a larger 1.78‑inch AMOLED display and an integrated microphone, turning the case into an AI‑enabled controller and recorder. Both support on‑device voice commands for playback, volume, and noise control, so you can manage calls hands‑free. Trade‑offs remain: reviewers note that the buds are slightly bulky and the cases a bit heavy, with the Pro Max case larger still. Yet the robust feature set and significantly upgraded noise cancellation earbuds performance help offset the ergonomic compromises for many users.
Beyond Calls: AI Note‑Taking and Translation Expand the THUS Platform
While call clarity is the headline benefit, Soundcore is clearly positioning the THUS AI chip as a broader on‑the‑go productivity engine. Both Liberty 5 Pro models support translation in more than 100 languages, using the earbuds as the primary interface. The Liberty 5 Pro Max extends this with translation and control via its touchscreen case, reinforcing its role as a standalone companion device. Its AI Note‑Taker can record meetings or lectures through the case microphone and then generate transcripts, speaker labels, summaries, and action items via the app. This turns a pair of AI earbuds into a lightweight capture tool for work and study. With on‑device voice commands also handled locally, the Liberty 5 Pro series hints at a future where the same AI silicon responsible for pristine wireless call clarity also manages language, notes, and everyday assistance—without being tethered to a phone or cloud connection.