Speech Privacy Explained — How Soundproof Pods Protect Your Confidential Conversations

By INYKO Silent Pod | Published: June 2026

We talk about soundproofing in decibels and frequencies, but the most important metric for most users is something simpler: can the person standing outside hear what I’m saying?

This is the essence of speech privacy — the ability to conduct a conversation without it being intelligible to unintended listeners. And it’s where premium soundproof pods completely transform the workspace experience.

The Speech Privacy Spectrum

Understanding speech privacy helps you choose the right solution. The ASTM E2632 standard classifies privacy into three levels:

INYKO Silent Pod delivers confidential to absolute privacy across its product range, with tested reduction of 35–40dB and a maximum peak of 48dB.

Why This Matters in Real Life

Consider a typical HR discussion. An employee is discussing a sensitive performance issue. Outside the pod, colleagues are working nearby.

• Without a pod (noise reduction ~0dB): Every word is audible. Employees may try to whisper, but whispers carry differently and actually increase the sense of secrecy.
• Inside an entry-level pod (~15–20dB reduction): Colleagues hear muffled voices. They know someone is talking, but can’t make out the content. This meets basic privacy needs.
• Inside an INYKO Silent Pod (~35–40dB reduction): A person standing 1 meter away hears nothing identifiable. Even with ears pressed to the glass, the sound is at whisper level — completely unintelligible.

The Acoustics of Eavesdropping

The threshold of speech intelligibility occurs when the speech signal is approximately 6dB above the background noise level. In a typical 55–65dB open office environment:

• Normal speech at 70dB inside the pod → Leaks at ~30–35dB → 15–20dB below office noise floor → Completely masked

This is the fundamental principle behind INYKO’s acoustic engineering. The pod doesn’t just absorb sound — it attenuates it below the masking threshold of ambient office noise.

Beyond Human Ears: Device Privacy

Modern privacy concerns extend beyond human eavesdropping. Consider:

• Smart assistants accidentally triggered by your meeting
• Voice biometrics picking up incidental speech
• Nearby recording devices capturing conversations

A soundproof pod provides an acoustic boundary that protects against all of these — not because it’s soundproof to electronics (it’s not), but because it reduces the signal-to-noise ratio to the point where devices have difficulty parsing your speech from background.

Certification You Can Trust

INYKO Silent Pod’s speech privacy performance is not self-reported. It’s been independently verified by SGS following ISO 23351-1:2020 testing methodology. This is the same standard used by government agencies and financial institutions to qualify secure communication spaces.

Real Feedback from Deployments

Across 500+ enterprise clients, the feedback on speech privacy is remarkably consistent:

“Before the pod, our sales team would take calls in stairwells, empty conference rooms, or even bathroom stalls. Now they just walk into a pod. The first thing everyone comments on is how they can have a completely honest conversation without worrying who’s listening.”

— Facility Manager, Tech Company (Singapore)

“We had an HR team sharing a floor with engineering. After installing pods, the number of HR conversations that had to be rescheduled due to privacy concerns dropped by 90%.”

— Operations Director, Financial Services (UK)

The Bottom Line

Speech privacy isn’t a luxury feature — it’s a fundamental workplace requirement that’s become harder to deliver in open-plan environments. Soundproof pods that meet ISO 23351-1:2020 standards provide the closest thing to a closed-door office without the real estate cost.

With INYKO’s independently verified 35–40dB speech reduction, you can conduct any conversation with confidence — knowing that what’s said in the pod stays in the pod.

INYKO Silent Pod — SGS ISO 23351-1:2020 verified speech privacy. Factory certified by SGS and TÜV.